10-K comparison

Southwest Airlines (LUV) 10-K risk factor changes: FY2017 vs FY2016

The 2017-12-31 10-K against the 2016-12-31 one, compared heading by heading and sentence by sentence. One of these filings carries no fiscal year tag, so its year is the calendar year of the period end.

Item 1A47 rewritten11 added6 removed136 unchanged

All filing items1,210 rewritten584 added509 removed1,874 unchanged

Read the changesGo to Item 1A

Southwest Airlines Form 10-K, every itemFY2017, filed 7 February 2018, against FY2016, filed 7 February 2017FY2017 on sec.govFY2016 on sec.govRead this filingJSON

Summary

counted, not written

Sentences by item

20 items, with every count and a link to each item that changed

Underlined words on a shaded ground are new in FY2017; struck-through words were in FY2016. Sentences that are wholly new or wholly gone are labelled rather than marked.

Item 1A. Risk Factors

47 rewritten, 11 added, 6 removed, 136 unchanged

Rewritten

Although the U.S. economy has experienced [removed: moderate] [added: modest] economic growth over the course of the past several years, any continuing or future U.S. or global economic uncertainty could negatively affect the [removed: Company’s] [added: Company's] results of operations and could cause the Company to adjust its business strategies.

Rewritten

Airlines are inherently dependent upon energy to operate, and jet fuel and oil represented approximately 22 percent of the [removed: Company’s] [added: Company's] operating expenses for [removed: 2016.][added: 2017.]

Rewritten

Although [removed: 2016] [added: 2017] fuel prices were [removed: lower] [added: moderately higher] than [removed: in 2015,] [added: 2016 fuel prices,] as discussed above under "Business - Cost Structure," the cost of fuel can be extremely volatile and unpredictable, and even a small change in market fuel prices can significantly affect profitability.

Rewritten

For example, fuel prices can be impacted by political and economic factors, such as (i) dependency on foreign imports of crude oil and the potential for hostilities or other conflicts in oil producing areas; (ii) limited domestic refining or pipeline [removed: capacity;] [added: capacity due to weather, natural disasters, or other factors;] (iii) worldwide demand for fuel, particularly in developing countries, which can result in inflated energy prices; (iv) changes in U.S. governmental policies on fuel production, transportation, taxes, and marketing; and (v) changes in currency exchange rates.

Rewritten

The [removed: Company’s] [added: Company's] ability to effectively address fuel price increases could be limited by factors such as its historical low-fare reputation, the portion of its Customer base that purchases travel for leisure purposes, the competitive nature of [removed: the airline industry generally, and the risk that higher fares will drive a decrease in demand.]

Rewritten

However, [removed: as evidenced by the extreme decline in jet fuel prices in late 2015,] energy prices can fluctuate significantly in a relatively short amount of time.

Rewritten

The Company is also subject to the risk that [removed: additional] cash collateral may be required to be posted to fuel hedge counterparties, which could have a significant impact on the [removed: Company’s] [added: Company's] financial position and liquidity.

Rewritten

The [removed: Company’s] [added: Company's] low-cost structure has historically been one of its primary competitive advantages, as it has enabled it to offer low fares, drive traffic volume, [removed: and] grow market [removed: share; however fuel] [added: share,] and [removed: labor costs, as well as other costs such as regulatory compliance costs, can negatively affect the Company’s ability to control its costs.][added: protect profits.]

Rewritten

Jet fuel and oil constituted approximately 22 percent of the [removed: Company’s] [added: Company's] operating expenses during [removed: 2016,] [added: 2017,] and the [removed: Company’s] [added: Company's] ability to control the cost of fuel is subject to the external factors discussed in the second Risk Factor above.

Rewritten

Salaries, wages, and benefits constituted approximately 41 percent of the [removed: Company’s] [added: Company's] operating expenses during [removed: 2016.][added: 2017.]

Rewritten

As discussed further under [removed: “Management’s] [added: "Management’s] Discussion and Analysis of Financial Condition and Results of [removed: Operations,”] [added: Operations,"] the [removed: Company’s] [added: Company's] unionized workforce, which makes up approximately [removed: 83%] [added: 83 percent] of its Employees, has had pay scale increases as a result of contractual rate increases.

Rewritten

Additionally, the majority of [removed: Southwest’s] [added: Southwest's] unionized Employees, including its Pilots; Flight Attendants; Ramp, Operations, Provisioning, and Freight Agents; Aircraft Appearance Technicians; and Flight Crew Training Instructors, [removed: have] ratified new collective-bargaining agreements during 2016, which have put pressure on the [removed: Company’s] [added: Company's] low-cost structure.

Rewritten

Furthermore, as indicated above under [removed: “Business] [added: "Business] - [removed: Employees,”] [added: Employees,"] other Southwest unionized Employees, including its [removed: Mechanics; Material Specialists;] [added: Mechanics] and [removed: Facilities Maintenance Technicians,] [added: Material Specialists,] are in unions currently in negotiations for labor agreements, which could result in additional pressure on the [removed: Company’s] [added: Company's] low-cost structure.

Rewritten

When this occurs, airport costs are allocated among a fewer number of total [added: flights,]

Rewritten

[removed: flights,] which can result in increased landing fees and other costs for the Company.

Rewritten

The Company is also reliant upon third party vendors and service providers, [removed: and] [added: in particular with respect to] its [added: fleet and technology initiatives and performance, and the Company's] low-cost advantage is also dependent in part on its ability to obtain and maintain commercially reasonable terms with those parties.

Rewritten

Although the Company has been able to purchase [removed: war-risk (terrorism)] [added: aviation, property, liability, and professional] insurance via the commercial insurance marketplace, available commercial insurance could be more expensive in the future and/or have material differences in coverage than insurance that has historically been provided and may not be adequate to protect against the Company's risk of loss from future [added: events, including] acts of terrorism.

Rewritten

In addition, like Southwest, some competitors have [removed: plans to add] [added: added] a significant number of new [added: and different] aircraft to their fleets, which could potentially decrease their operating costs through better fuel efficiencies and lower maintenance costs.

Rewritten

The Company is increasingly dependent on technology to operate its business and continues to implement substantial changes to its information systems; any failure, disruption, [added: breach,] or [removed: breach] [added: delay] in [added: implementation of] the [removed: Company’s] [added: Company's] information systems could materially adversely affect its operations.

Rewritten

The Company is increasingly dependent on the use of complex technology and systems to run its ongoing [removed: operations,] [added: operations] and [removed: the Company continues to implement technology initiatives to] support its [removed: ongoing operations and strategies.][added: strategic objectives.]

Rewritten

[removed: Integration] [added: Implementation and integration] of complex systems and technology presents significant challenges in terms of costs, human resources, and development of effective internal controls.

Rewritten

[removed: Integration also presents] [added: Implementation and integration require a balancing between] the [added: introduction of new capabilities and the managing of existing systems, and present the] risk of operational or security inadequacy or interruption, which could materially affect the [removed: Company’s] [added: Company's] ability to effectively operate its business and/or could negatively impact the [removed: Company’s] [added: Company's] results of operations.

Rewritten

The Company is also reliant upon [added: the performance of its] third party [removed: performance] [added: vendors] for timely and effective completion of many of its technology [removed: initiatives.][added: initiatives and for maintaining adequate information security measures.]

Rewritten

Modifications and refinements to the [removed: Company’s] [added: Company's] systems have been and are expected to continue to be expensive to implement and [removed: may] [added: can] divert management’s attention from other matters.

Rewritten

In addition, the [removed: Company’s] [added: Company's] operations could be adversely affected, or it could face imposition of regulatory penalties, if it were unable to timely or effectively modify its systems as [removed: necessary.][added: necessary or appropriately balance the introduction of new capabilities with the management of existing systems.]

Rewritten

The Company has [removed: occasionally] experienced system interruptions and delays that make its websites and services unavailable or slow to respond, which can prevent the Company from efficiently processing Customer transactions or providing services, and these could continue to occur in the future.

Rewritten

These system interruptions and delays can reduce the [removed: Company’s] [added: Company's] operating revenues and the attractiveness of its [removed: services] [added: services,] as well as increase the [removed: Company’s] [added: Company's] costs.

Rewritten

Salaries, wages, and benefits represented approximately 41 percent of the [removed: Company’s] [added: Company's] operating expenses for the year ended December 31, [removed: 2016.][added: 2017.]

Rewritten

In addition, as of December 31, [removed: 2016,] [added: 2017,] approximately 83 percent of the [removed: Company’s] [added: Company's] Employees were represented for collective bargaining purposes by labor unions, making the Company particularly exposed in the event of labor-related job actions.

Rewritten

The Company is currently dependent on single aircraft and engine suppliers, as well as single suppliers of certain other parts; therefore, the Company would be materially adversely affected if it were unable to obtain additional equipment or support from any of these [removed: suppliers or] [added: suppliers,] in the event of a mechanical or regulatory issue associated with their [removed: equipment.][added: equipment, or in the event the pricing and operational attributes of the Company's equipment become less competitive.]

Rewritten

Therefore, if the Company [removed: were] [added: was] unable to acquire additional aircraft from Boeing, or if Boeing [removed: were] [added: was] unable or unwilling to make timely deliveries of aircraft or to provide adequate support for its products, the [removed: Company’s] [added: Company's] operations would be materially adversely affected.

Rewritten

The Company believes, however, that its years of experience with the Boeing 737 aircraft type, as well as the efficiencies Southwest has historically achieved by operating with a single aircraft type, [added: continue to] outweigh the risks associated with its single aircraft supplier strategy.

Rewritten

In the ordinary course of its business, the Company [added: also] provides certain confidential, proprietary, and personal information to third parties.

Rewritten

While the Company seeks to obtain assurances that these third parties will protect this information, there is a risk the [removed: confidentiality] [added: security] of data held by third parties could be breached.

Rewritten

However, organic growth remains challenging because (i) the opportunities for domestic expansion are limited; (ii) the Company's international network is relatively small [removed: and international expansion presents unique challenges; and (iii) the Company has faced an increased presence of other low-cost, low-fare carriers.]

Rewritten

As a result, the Company is reliant on the success of its revenue strategies to help offset [added: certain increasing costs.]

Rewritten

Terrorist attacks or other [added: crimes and] hostilities, actual and threatened, have from time to time materially adversely affected the demand for air travel and also have resulted in increased safety and security costs for the Company and the airline industry generally.

Rewritten

The [removed: FAA’s] [added: FAA's] protracted transition to a satellite-based air traffic control system, as well as the implementation of policies and standards that account for the precision of global positioning system-supported aircraft technologies, could continue to adversely impact airspace capacity and the overall efficiency of the system, resulting in limited opportunities for the Company to grow, longer scheduled flight times, [removed: more] [added: increased] delays and cancellations, and increased fuel consumption and aircraft emissions.

Rewritten

| • | limitations on airport gate capacity or use of other airport facilities such as the 2016 [added: and 2017] reallocation of slots at John Wayne Airport in Orange County, California, which caused the Company to reduce service at that airport; |

Rewritten

| • | outbreaks of disease; [added: and] |

New in FY2017

the airline industry generally, and the risk that higher fares will drive a decrease in demand.

New in FY2017

Also, see Note 2 to the Consolidated Financial Statements for information on future changes in applicable standards for hedge accounting.

New in FY2017

The Company's low-cost position has become even more significant with the increased presence of ULCCs and changes to the legacy fare offerings discussed above; however, it has become increasingly difficult for the Company to improve upon its industry cost position.

New in FY2017

For example, labor and fuel costs, as well as other costs such as regulatory compliance costs, can negatively affect the Company's ability to control its costs.

New in FY2017

Further, available cyber-security insurance with regards to data protection and business interruption could be more expensive in the future and/or have material differences in coverage than insurance that has historically been provided and may not be adequate to protect the Company's risk of loss.

New in FY2017

ULCCs, which have increased capacity in the Company's markets, have surpassed the Company's cost advantage.

New in FY2017

The Company could also be materially adversely affected if the pricing or operational attributes of its equipment were to become less competitive.

New in FY2017

and international expansion presents unique challenges; and (iii) the Company has faced an increased presence of other low-cost, low-fare carriers.

New in FY2017

| • | adverse weather and natural disasters such as the hurricanes and earthquakes in third quarter 2017, which resulted in approximately $100 million in reduced revenues for the Company as a result of approximately 5,000 canceled flights; |

New in FY2017

As discussed above under “Regulation – Operational, Safety, and Health Regulation,” in January 2018, the Company submitted a formal application to the FAA for authorization to conduct ETOPS using Boeing 737-800 aircraft, in connection with the Company’s plans to begin service to Hawaii.

New in FY2017

If the Company receives FAA authorization and commences ETOPS, the Company will be subject to additional, ongoing, ETOPS-specific regulatory and procedural requirements, which could add operational and compliance risks to the Company’s business, including costs associated therewith.

Dropped from FY2016

Some so called “ultra low-cost carriers” have surpassed the Company’s cost advantage while continuing to add aircraft, expand their networks, and add competition to the Company’s routes.

Dropped from FY2016

Furthermore, some of the Company’s competitors have taken advantage of reorganization in bankruptcy, and even the threat of bankruptcy, not only to lower employee pay scales, but also to decrease operating costs through renegotiated supply and financing agreements.

Dropped from FY2016

In addition, some airlines have consolidated and reported significant cost synergies.

Dropped from FY2016

certain increasing costs and to continue to improve Customer Service.

Dropped from FY2016

| • | adverse weather and natural disasters; |

Dropped from FY2016

Laws in some jurisdictions differ in significant

An excerpt. Shown here: 40 of 47 rewritten, all 11 added and all 6 removed. The counts are complete. For every sentence, read Item 1A. Risk Factors in the FY2017 filing and the FY2016 filing.

Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations

277 rewritten, 185 added, 140 removed, 377 unchanged

Rewritten

For the [removed: 44th] [added: 45th] consecutive year, the Company was profitable, recording GAAP and non-GAAP results for [removed: 2016] [added: 2017] and [removed: 2015] [added: 2016] as noted in the following tables.

Rewritten

| GAAP | | [removed: 2016] [added: 2017] | | | | [removed: 2015] [added: 2016] | | | | Percent Change |

Rewritten

| Operating [removed: income] [added: income, as reported] | [added: $] | [added: 3,515 | | |] $ | 3,760 | | | $ | 4,116 | | [removed: | (8.6) |]

Rewritten

| Net income | | $ | [removed: 2,244] [added: 3,488] | | | $ | [removed: 2,181] [added: 2,244] | | | [removed: 2.9] [added: 55.4] |

Rewritten

| Net income per share, diluted | | $ | [removed: 3.55] [added: 5.79] | | | $ | [removed: 3.27] [added: 3.55] | | | [removed: 8.6] [added: 63.1] |

Rewritten

| Operating income | | $ | [removed: 3,957] [added: 3,455] | | | $ | 3,957 | | | [removed: —] [added: (12.7)] |

Rewritten

| Net income | | $ | [removed: 2,370] [added: 2,107] | | | $ | [removed: 2,355] [added: 2,370] | | | [removed: 0.6] [added: (11.1)] |

Rewritten

| Net income per share, diluted | | $ | [removed: 3.75] [added: 3.50] | | | $ | [removed: 3.52] [added: 3.75] | | | [removed: 6.5] [added: (6.7)] |

Rewritten

Net income for the year ended December 31, [removed: 2016,] [added: 2017,] was [removed: a Company record $2.24] [added: $3.5] billion, a [removed: 2.9] [added: 55.4] percent increase year-over-year, or [removed: $3.55] [added: $5.79] per diluted [added: share, and non-GAAP Net income was $2.1 billion, an 11.1 percent decrease year-over-year, or $3.50 per diluted] share.

Rewritten

[removed: Year] [added: Operating income for the year] ended December 31, [removed: 2016 Operating income] [added: 2017] was [removed: $3.8 billion] [added: $3.52 billion, a decrease of 6.5 percent year-over-year,] and non-GAAP Operating income was [removed: $4.0] [added: $3.46] billion.

Rewritten

For the twelve months ended December 31, [removed: 2016,] [added: 2017,] the [removed: Company] [added: Company's earnings performance, combined with its actions to manage invested capital,] produced a [removed: 30.0] [added: 25.9] percent [removed: Return] [added: pre-tax non-GAAP return] on invested capital ("ROIC"), compared with [removed: 32.7] [added: the Company's ROIC of 30.0] percent for the twelve months ended December 31, [removed: 2015.][added: 2016.]

Rewritten

During [removed: 2016,] [added: 2017,] the Company continued to return [removed: significant] value to its Shareholders.

Rewritten

The Company returned [removed: a record $2.0] [added: $1.9] billion to Shareholders through [removed: a combined $222] [added: $274] million in dividend payments and [removed: $1.75] [added: $1.6] billion through [removed: five] [added: four] separate accelerated share repurchase [removed: programs.][added: programs and other open market repurchases.]

Rewritten

During November [removed: 2016,] [added: 2017,] the Company launched the Fourth Quarter [removed: 2016] [added: 2017] ASR Program by advancing [removed: $300] [added: $250] million to a financial institution in a privately negotiated transaction.

Rewritten

The specific number of shares that the Company ultimately will repurchase under the [removed: Fourth] [added: First] Quarter [removed: 2016] [added: 2018] ASR Program will be determined based generally on a discount to the volume-weighted average price per share of the Company's common stock during a calculation period to be completed [removed: in February 2017.][added: no later than May 2018.]

Rewritten

With the addition of these new markets, the Company now serves [removed: 101 cities] [added: 100 destinations] across [removed: nine countries] [added: 40 states] and [added: ten near-international countries, and] operates over [removed: 3,900] [added: 4,000] departures a day.

Rewritten

During [removed: 2016,] [added: 2017,] the Company took delivery of [removed: 38] [added: 39 new] 737-800 aircraft from [removed: Boeing] [added: Boeing, 13 new 737 MAX 8 aircraft from Boeing,] and [removed: 23] [added: 18] pre-owned Boeing 737-700 aircraft from third parties.

Rewritten

The Company also retired [removed: 31 Boeing 737-300 ("Classic") aircraft and] its remaining [removed: 11] [added: 87] Boeing [removed: 737-500] [added: 737-300 ("Classic") aircraft, which included 61 Classic] aircraft [removed: during the year.][added: grounded in September 2017 as part of an accelerated retirement schedule.]

Rewritten

For 2018, the Company's current firm aircraft commitments would result in [removed: 743] [added: 750] aircraft by year-end [removed: 2018, including nine Boeing 737-800 options exercised during 2016, and two Boeing 737-800 options exercised in January 2017.][added: 2018.]

Rewritten

See Note [removed: 4] [added: 2] to the Consolidated Financial Statements for further information.

Rewritten

The Company [removed: is] [added: became] the [removed: launch customer for] [added: first airline in North America to offer scheduled service utilizing] Boeing’s new, more [removed: fuel-efficient 737-8] [added: fuel-efficient, 737 MAX 8] aircraft, which [removed: is expected to enter] [added: entered] service in fourth quarter 2017.

Rewritten

[removed: Southwest] [added: The Company] is [removed: also] [added: scheduled to be] the launch customer for the Boeing [removed: 737-7] [added: 737 MAX 7] series aircraft, with deliveries expected to begin in 2019.

Rewritten

Currently, the Company has firm orders in place for [removed: 170 737-8] [added: 197 737 MAX 8] aircraft and 30 [removed: 737-7] [added: 737 MAX 7] aircraft.

Rewritten

[removed: | • | The] [added: During November 2017, the] Company's [removed: Aircraft Appearance] [added: Facilities Maintenance] Technicians, represented by [removed: the] Aircraft Mechanics Fraternal Association ("AMFA"), ratified a [removed: new] [added: tentative] collective-bargaining agreement with the Company. [removed: The newly ratified contract becomes amendable in November 2020. |]

Rewritten

[removed: Holding all other factors constant, the increase was primarily attributable to a 5.7 percent increase in capacity as strong] Customer demand for low-fare air travel enabled the Company to fill the additional seats, as evidenced by a Company record annual load factor of 84.0 percent.

Rewritten

On a unit basis, Passenger revenues decreased 3.8 percent, year-over-year, largely driven by a 4.3 percent decrease in passenger revenue yield, year-over-year, which included a reduction to 2016 Passenger revenues associated with the [removed: Agreement] [added: Company's July 2015 amended co-branded credit card agreement ("Agreement")] with [removed: Chase, as] [added: Chase Bank USA, N.A. ("Chase") and] a [removed: result of the] [added: resulting] required change in accounting [removed: methodology in 2015.][added: methodology.]

Rewritten

See Note [removed: 1] [added: 2] to the Consolidated Financial Statements for further information.

Rewritten

Based on current trends, the Company currently expects Freight revenues in first quarter [removed: 2017] [added: 2018] to [removed: be comparable] [added: increase, compared] with first quarter [removed: 2016.][added: 2017.]

Rewritten

See Note [removed: 1 to the Consolidated Financial Statements and the Note] Regarding Use of Non-GAAP Financial Measures for further information.

Rewritten

Other revenues for 2016 increased [added: by] $490 million, or 41.9 percent, compared with 2015, primarily as a result of the Agreement with Chase and the resulting required change in accounting methodology.

Rewritten

Excluding this impact of the Agreement with Chase, Other revenues increased primarily due to higher ancillary revenues associated with EarlyBird Check-in® and A1-15 select [added: open priority] boarding positions sold at the airport.

Rewritten

The Company currently expects Other revenues in first quarter [removed: 2017] [added: 2018] to increase, compared with first quarter [removed: 2016.][added: 2017.]

Rewritten

Based on revenue and booking trends thus far in first quarter [removed: 2017,] [added: 2018,] the Company is currently expecting first quarter [removed: 2017] [added: 2018] operating unit revenues to [removed: be flat to down] [added: increase in the] one [removed: percent,] [added: to two percent range,] compared with first quarter [removed: 2016.][added: 2017.]

Rewritten

Operating expenses for 2016 increased [added: by] $961 million, or 6.1 percent, compared with 2015, while capacity increased 5.7 percent over the same period.

Rewritten

Historically, except for changes in the price of fuel, changes in Operating expenses for [added: airlines have been largely driven by changes in capacity, or ASMs.]

Rewritten

[added: Historically, except for changes in the price of fuel, changes in Operating expenses for] airlines have been largely driven by changes in capacity, or ASMs.

Rewritten

The following table presents the Company's Operating expenses per ASM for 2016 and 2015, followed by explanations of these changes on a per ASM basis [removed: and] [added: and/or on a] dollar basis:

Rewritten

| (in cents, except for percentages) | 2016 | | | | 2015 | | | | change | | | | [removed: change] | |

Rewritten

| Depreciation and amortization | 0.82 | | | | 0.72 | | | | 0.10 | | | | [removed: 13.9] [added: —] | |

Rewritten

| Acquisition and integration | — | | | | 0.03 | | | | (0.03 | | ) | | [removed: n.m.] [added: (100.0] | [added: )] |

New in FY2017

| Operating income | | $ | 3,515 | | | $ | 3,760 | | | (6.5) |

New in FY2017

The increase in GAAP Net income was primarily driven by a $1.4 billion reduction in Provision for income taxes related to the Tax Cuts and Jobs Act legislation enacted in December 2017, which resulted in a re-measurement of the Company's deferred tax assets and liabilities at the new federal corporate tax rate of 21 percent.

New in FY2017

The decrease in Operating Income was driven by a 7.7 percent increase in Salaries, wages, and benefits expense, primarily due to wage rate increases resulting from amended collective-bargaining agreements reached with multiple unionized workgroups, coupled with an 8.0 percent increase in Fuel and oil expense, primarily due to increases in market prices.

New in FY2017

These factors were partially offset by a 2.9 percent increase in Passenger revenues driven by strong demand for low-fare air travel and a 3.6 percent year-over-year capacity growth, holding Load factor and Passenger yield constant.

New in FY2017

Prior year results included $356 million of contract ratification bonuses accrued in Salaries, wages, and benefits expense associated with tentative collective-bargaining agreements reached with multiple unionized workgroups.

New in FY2017

The primary cause of the year-over-year decline in ROIC was the decrease in Operating income for the twelve months ended December 31, 2017, compared with the twelve months ended December 31, 2016.

New in FY2017

The Company received 4.1 million shares in total under the Fourth Quarter 2017 ASR Program, which was completed in January 2018.

New in FY2017

On January 31, 2018, the Company launched a new accelerated share repurchase program by advancing $500 million to a financial institution in a privately negotiated transaction ("First Quarter 2018 ASR Program").

New in FY2017

The purchase will be recorded as a treasury share purchase for purposes of calculating earnings per share.

New in FY2017

Subsequent to the launch of the First Quarter 2018 ASR Program, the Company has $850 million remaining under its May 2017 $2.0 billion share repurchase authorization.

New in FY2017

During 2017, the Company began scheduled service to new international destinations of Grand Cayman Island and Providenciales, Turks & Caicos, as well as new domestic service to Cincinnati/Northern Kentucky International airport.

New in FY2017

Additionally, the Company announced plans to begin selling tickets in 2018 for service to Hawaii, subject to requisite governmental approvals, including approval from the FAA for Extended Operations ("ETOPS"), a regulatory requirement to operate between the U.S. mainland and the Hawaiian Islands.

New in FY2017

The Company recorded a charge of $63 million related to the leased portion of the Classic fleet, representing the remaining net lease payments due and certain lease return requirements that could have to be performed on these leased aircraft prior to their return to the lessors, as of the cease-use date.

New in FY2017

See Part I, Item 2 for further information.

New in FY2017

See Part I, Item 2 for further information.

New in FY2017

The Company currently plans to grow its 2018 available seat miles in the low five percent range, year-over-year, with first half 2018 year-over-year growth in the low three percent range and second half 2018 year-over-year growth in the low seven percent range.

New in FY2017

The Company continues to expect the retirement of its Classic aircraft to produce significant incremental cost savings and improvements in pre-tax results of at least $200 million, cumulatively, by the end of 2020.

New in FY2017

On May 9, 2017, the Company completed a multi-year initiative to completely transition its reservation system to the Amadeus Altéa Passenger Service System.

New in FY2017

The new reservation system, which represented the largest technology project in the Company's history, was designed to improve flight scheduling and inventory management, enable operational enhancements to manage flight disruptions, such as those caused by extreme weather conditions, enable revenue enhancements, further schedule optimization, support additional international growth, and enable other foundational and operational capabilities.

New in FY2017

The Company continues to expect the new reservation system to produce incremental benefits in pretax results of approximately $200 million in 2018.

New in FY2017

The newly ratified contract becomes amendable in November 2022.

New in FY2017

2017 Compared with 2016

New in FY2017

Holding Load factor and Passenger yield constant, the increase was primarily attributable to a 3.6 percent increase in capacity, partially offset by approximately $100 million in reduced revenues as a result of the hurricanes and earthquakes during third quarter 2017.

New in FY2017

Load factor remained solid at 83.9 percent.

New in FY2017

Other revenues for 2017 increased by $197 million, or 11.9 percent, compared with 2016.

New in FY2017

Approximately 70 percent of the increase was due to an increase in revenue associated with cardholder spend on the Company's co-branded Chase® Visa credit card, and the remainder of the increase was due to higher ancillary revenues primarily as a result of EarlyBird Check-In revenues of $358 million in 2017, an increase of $29 million, or 8.7 percent, compared with 2016.

New in FY2017

The Company currently expects EarlyBird Check-in revenues to have a similar year-over-year growth rate in 2018, as compared with 2017.

New in FY2017

Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers, is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017.

New in FY2017

Therefore, the Company will adopt the standard as of January 1, 2018, utilizing the full retrospective method of adoption allowed by the standard, in order to provide for comparative results in all periods presented.

New in FY2017

As such, in the Company's first quarter 2018 Form 10–Q, both first quarter 2018 results and first quarter 2017 results will be presented under the new standard.

New in FY2017

On the Consolidated Statement of Income, the estimated impact of this ASU for full year 2017 and 2016 will be a decrease to Operating revenues of approximately $25 million and $135 million, respectively, and a decrease to Operating expenses of approximately $40 million in each year.

New in FY2017

The ASU will also result in the reclassification of certain ancillary revenues from Other revenues to Passenger revenues for each period.

New in FY2017

| Salaries, wages, and benefits | | 4.76 | ¢ | | | 4.57 | ¢ | | | 0.19 | ¢ | | 4.2 | % |

New in FY2017

| Fuel and oil | 2.56 | | | | 2.46 | | | | 0.10 | | | | 4.1 | |

New in FY2017

| Maintenance materials and repairs | 0.65 | | | | 0.70 | | | | (0.05 | | ) | | (7.1 | ) |

New in FY2017

| Aircraft rentals | 0.13 | | | | 0.15 | | | | (0.02 | | ) | | (13.3 | ) |

New in FY2017

| Depreciation and amortization | 0.79 | | | | 0.82 | | | | (0.03 | | ) | | (3.7 | ) |

New in FY2017

| Other operating expenses | 1.75 | | | | 1.70 | | | | 0.05 | | | | 2.9 | |

New in FY2017

| Total | | 11.48 | ¢ | | | 11.22 | ¢ | | | 0.26 | ¢ | | 2.3 | % |

New in FY2017

Operating expenses per ASM for 2017 increased 2.3 percent, compared with 2016, primarily due to wage rate increases, increases in market jet fuel prices, and charges associated with the grounding of the Company's remaining Classic aircraft.

Dropped from FY2016

This increase was primarily driven by a 41.9 percent increase in Other operating revenues due to the Company's July 2015 amended co-branded credit card agreement ("Agreement") with Chase Bank USA, N.A. ("Chase") and a resulting required change in accounting methodology (see Note 1 to the Consolidated Financial Statements for further information), coupled with increased Passenger revenues driven by strong demand for low-fare air travel and a 5.7 percent year-over-year capacity growth.

Dropped from FY2016

This increase was partially offset by an increase in Salaries, wages, and benefits expense, an increase in Depreciation and amortization expense, and an increase in Other operating expenses.

Dropped from FY2016

These items are discussed in more detail below.

Dropped from FY2016

Excluding special items in both years, non-GAAP Net income was a record $2.37 billion, a 0.6 percent increase year-over-year, or $3.75 per diluted share.

Dropped from FY2016

During December 2016, the Company received an initial delivery of 4.7 million shares of common stock, representing an estimated 75 percent of shares to be purchased by the Company under the Fourth Quarter 2016 ASR Program.

Dropped from FY2016

During 2016, the Company began scheduled service to Long Beach, California and scheduled service to three Cuban cities: Havana, Varadero, and Santa Clara.

Dropped from FY2016

Also in January 2017, the Company filed an application with the DOT to serve Owen Roberts International Airport in Grand Cayman, and announced plans to launch service to Cincinnati/Northern Kentucky International Airport, both scheduled to begin in June 2017.

Dropped from FY2016

The Company currently plans to grow its 2017 available seat miles approximately 3.5 percent, year-over-year, with approximately 2.5 points of that increase relating to domestic growth.

Dropped from FY2016

By the end of third quarter 2017, the Company intends to retire the 87 Classic aircraft remaining in its fleet at December 31, 2016.

Dropped from FY2016

After taking into account scheduled deliveries for new and pre-owned aircraft in 2017, this accelerated retirement schedule is expected to decrease the Company's fleet to 703 aircraft by year-end 2017.

Dropped from FY2016

The 737-8 is expected to reduce fuel burn and CO2 emissions approximately 20 percent, compared with the 737-300 and 737-500 aircraft when they first entered service.

Dropped from FY2016

The Company is in the midst of a multi-year project to completely replace its reservation system.

Dropped from FY2016

In 2014, the Company launched the Amadeus Altéa reservations solution to support the Company’s international service.

Dropped from FY2016

The Company has since begun implementing Amadeus' Altéa reservations solution as the Company's future single reservation system for both domestic and international reservations.

Dropped from FY2016

The implementation consists of two foundational releases.

Dropped from FY2016

Release 1 was completed in December 2016, and added functionality to enable the sale of domestic tickets on the new reservation system.

Dropped from FY2016

Release 2 is expected to be completed on May 9, 2017 and will add functionality to enable operational capabilities such as passenger check-in and boarding and baggage check-in on the new reservation system.

Dropped from FY2016

Subsequent releases will add functionality to enable revenue enhancements, further schedule optimization, support for international growth, and additional foundational and operational capabilities.

Dropped from FY2016

During 2016, the following events took place regarding the Company's unionized Employee groups in contract negotiations:

Dropped from FY2016

| | |

Dropped from FY2016

| --- | --- |

Dropped from FY2016

| • | The Company's Flight Crew Training Instructors, represented by Transport Workers Union ("TWU") Local 557, ratified a new collective-bargaining agreement with the Company. The newly ratified contract becomes amendable in December 2019. |

Dropped from FY2016

| • | The Company's Ramp, Operations, Provisioning, and Freight Agents, represented by TWU Local 555, ratified a new collective-bargaining agreement with the Company. The newly ratified contract becomes amendable in February 2021. |

Dropped from FY2016

| • | The Company's Pilots, represented by the Southwest Airlines Pilots' Association, ratified a new collective-bargaining agreement. The newly ratified contract becomes amendable in September 2020. |

Dropped from FY2016

| • | The Company's Flight Attendants, represented by TWU Local 556, ratified a new collective-bargaining agreement with the Company. The newly ratified contract becomes amendable in November 2018. |

Dropped from FY2016

| • | The Company's Facilities Maintenance Technicians, represented by AMFA, reached a tentative collective-bargaining agreement with the Company, which was announced in October 2016. The Facilities Maintenance Technicians failed to ratify this agreement, as announced by the Company on December 29, 2016, and the parties will continue negotiations. |

Dropped from FY2016

The transportation element of the consideration received is now allocated a lower relative value, resulting in a reduction in the revenues classified as Passenger on a prospective basis, and the higher relative value associated with the non-transportation elements results in an increase in the portion of revenues classified as Other within the Consolidated Statement of Income; however, the precise revenue impact for future periods is not determinable until the volume of future transactions for the period is known.

Dropped from FY2016

The Company recorded a Special revenue adjustment during 2015 of $172 million.

Dropped from FY2016

The Company currently expects to record a charge during 2017 associated with the grounding of its remaining Classic fleet.

Dropped from FY2016

This charge primarily relates to future contractual payments due to lessors for leased Classic aircraft with lease terms extending beyond third quarter 2017.

Dropped from FY2016

The Company continues to negotiate with these lessors in order to attempt to terminate certain leases early and potentially buy-out the remainder of the lease.

Dropped from FY2016

Therefore, the Company cannot yet accurately predict the amounts and/or timing of such charges during the first three quarters of 2017.

Dropped from FY2016

| Southwest Facilities Maintenance Technicians | 40 | AMFA | N/A |

Dropped from FY2016

| | | | | | | |

Dropped from FY2016

| --- | --- | --- | --- | --- | --- | --- |

Dropped from FY2016

| | | Maximum percent of estimated fuel consumption covered by | | | | |

Dropped from FY2016

| Period | | Heating Oil, and Gulf Coast Jet Fuel-equivalent price levels (1) | | | | |

Dropped from FY2016

| 2017 | | 63% | | | | |

Dropped from FY2016

| 2018 | | 57% | | | | |

Dropped from FY2016

The following table displays the Company's estimated fair value of remaining fuel derivative contracts

An excerpt. Shown here: 40 of 277 rewritten, 40 of 185 added and 40 of 140 removed. The counts are complete. For every sentence, read Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations in the FY2017 filing and the FY2016 filing.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

38 rewritten, 3 added, 12 removed, 52 unchanged

Rewritten

As of December 31, [removed: 2016, Southwest] [added: 2017, the Company] operated a total of [removed: 134] [added: 122] aircraft under operating and capital lease.

Rewritten

Further information about [removed: this sublease arrangement] [added: these leases] is disclosed in Note 7 to the Consolidated Financial Statements.

Rewritten

The Company believes there can be significant risk in not hedging against the possibility of such fuel price increases, especially in energy [removed: markets in which prices are high and/or rising.]

Rewritten

The Company expects to consume approximately [removed: 2] [added: 2.1] billion gallons of jet fuel in [removed: 2017.][added: 2018.]

Rewritten

Based on this anticipated usage, a change in jet fuel prices of just one cent per gallon would impact the Company’s Fuel and oil expense by approximately [removed: $20] [added: $21] million for [removed: 2017,] [added: 2018,] excluding any impact associated with fuel derivative instruments held.

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] the Company held a net position of fuel derivative instruments that represented a hedge for a portion of its anticipated jet fuel purchases for [removed: each year from 2017 through 2019.][added: future periods.]

Rewritten

The gross fair value of outstanding financial derivative instruments related to the Company’s jet fuel market price risk at December 31, [removed: 2016,] [added: 2017,] was a net [removed: liability] [added: asset] of [removed: $326] [added: $248] million.

Rewritten

In addition, [removed: $301] [added: $15] million in cash collateral deposits were [removed: provided] [added: held] by the Company in connection with these instruments based on their fair value as of December 31, [removed: 2016.][added: 2017.]

Rewritten

An immediate 10 percent increase or decrease in underlying fuel-related commodity prices from the December 31, [removed: 2016 (for all years from 2017 through 2019)] [added: 2017,] prices would correspondingly change the fair value of the commodity derivative instruments in place by approximately [removed: $266] [added: $214] million.

Rewritten

This sensitivity analysis uses industry standard valuation models and holds all inputs constant at December 31, [removed: 2016,] [added: 2017,] levels, except underlying futures prices.

Rewritten

The Company’s credit exposure related to fuel derivative instruments is represented by the fair value of contracts that are an asset [added: position] to the Company.

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] the Company had [removed: five] [added: eight] counterparties in which the derivatives held were a net asset.

Rewritten

However, if one or more of these counterparties were in a liability position to the Company and were unable to meet their obligations, [added: any open derivative contracts with the counterparty could be subject to early termination, which could result in substantial losses for the Company.]

Rewritten

At December 31, [removed: 2016,] [added: 2017,] the Company had agreements with all of its active counterparties containing early termination rights and/or bilateral collateral provisions whereby security is required if market risk exposure exceeds a specified threshold amount based on the counterparty’s credit rating.

Rewritten

Refer to the counterparty credit risk and collateral table provided in Note 10 to the Consolidated Financial Statements for the fair values of fuel derivatives, amounts [removed: posted] [added: held] as collateral, and applicable collateral posting threshold amounts as of December 31, [removed: 2016,] [added: 2017,] at which such postings are triggered.

Rewritten

Due to the [added: Company's investment grade credit rating,] terms of the Company’s current fuel hedging agreements with [removed: counterparties] [added: counterparties,] and the types of derivatives [removed: held,] [added: held as of December 31, 2017,] in the [removed: Company’s] [added: Company's] judgment, it does not have [removed: significant additional] cash collateral exposure.

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] no cash collateral deposits were provided by or held by the Company based on its outstanding interest rate swap agreements.

Rewritten

While the Company uses financial leverage, it strives to maintain a strong balance sheet and has a [removed: “BBB+”] [added: "BBB+"] rating with Fitch, a [removed: “BBB”] [added: "BBB+"] rating with Standard & Poor’s, and [removed: a “Baa1”] [added: an "A3"] credit rating with Moody’s as of December 31, [removed: 2016,] [added: 2017,] all of which are considered [removed: “investment grade.”] [added: "investment grade."] The Company’s French Credit Agreements due 2018 do not give rise to significant fair value risk but do give rise to interest rate risk because this borrowing was originally issued as floating-rate debt.

Rewritten

[added: Although there is interest rate] risk associated with these floating rate borrowings, the risk of the French Credit Agreements due 2018 is somewhat mitigated by the fact that the Company may prepay this debt under certain conditions.

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] excluding the notes or debentures that have been converted to a floating rate, the Company’s fixed-rate senior unsecured notes outstanding included its $300 million [removed: 5.125%] [added: 2.75%] senior unsecured notes due [removed: 2017,] [added: 2022,] its $300 million 3.00% senior unsecured notes due 2026, [removed: and] its $100 million 7.375% senior unsecured notes due [added: 2027, and its $300 million 3.45% senior unsecured notes due] 2027.

Rewritten

[removed: Excluding the] [added: The $100 million 7.375% senior unsecured] notes due [removed: 2026, these notes] [added: 2027] had at one point been converted to [added: a] floating [removed: rates,] [added: rate,] but the Company subsequently terminated the fixed-to-floating interest rate swap agreements related to [removed: them.][added: it.]

Rewritten

The effect of [removed: these terminations] [added: this termination] was that the interest associated with [removed: these debts] [added: this debt] prospectively reverted back to [removed: their] [added: its] original fixed [removed: rates.][added: rate.]

Rewritten

As a result of the [removed: gains] [added: gain] realized on [removed: these transactions,] [added: this transaction,] which [removed: are] [added: is] being amortized over the remaining term of the corresponding notes, and based on projected interest rates at the date of termination, the Company does not believe its future interest expense, based on projected future interest rates at the date of termination, associated with these notes will significantly differ from the expense it would have recorded had the notes remained at floating rates.

Rewritten

The following table displays the characteristics of the Company’s secured fixed rate debt as of December 31, [removed: 2016:][added: 2017:]

Rewritten

| Term Loan Agreement | | $ | [removed: 106] [added: 66] | | | 6.315 | % | | 5/6/2019 | | 14 specified Boeing 737-700 aircraft |

Rewritten

| Term Loan Agreement | | [removed: 28] [added: 19] | | | | 4.84 | % | | 7/1/2019 | | 4 specified Boeing 737-700 aircraft |

Rewritten

| Term Loan Agreement | | [removed: 284] [added: 237] | | | | 5.223 | % | | 5/9/2020 | | 21 specified Boeing 737-700 aircraft |

Rewritten

The carrying value of the Company’s floating rate debt totaled [removed: $1.1] [added: $1.0] billion, and this debt had a weighted-average maturity of [removed: 4.69] [added: 3.04] years at floating rates averaging [removed: 1.97] [added: 2.42] percent for the year ended December 31, [removed: 2016.][added: 2017.]

Rewritten

In total, the Company’s fixed-rate debt and floating rate debt represented [removed: 12.44] [added: 13] percent and [removed: 5.59] [added: 5] percent, respectively, of consolidated noncurrent assets at December 31, [removed: 2016.][added: 2017.]

Rewritten

The Company also has some risk associated with changing interest rates due to the short-term nature of its invested cash, which totaled [removed: $1.7] [added: $1.5] billion, and short-term investments, which totaled [removed: $1.6] [added: $1.8] billion at December 31, [removed: 2016.][added: 2017.]

Rewritten

A hypothetical 10 percent change in market interest rates as of December 31, [removed: 2016,] [added: 2017,] would not have a material effect on the fair value of the Company’s fixed-rate debt instruments.

Rewritten

Assuming floating market rates in effect as of December 31, [removed: 2016] [added: 2017] were held constant throughout a 12-month period, a hypothetical 10 percent change in those rates would have an immaterial impact on the Company’s net earnings and cash flows.

Rewritten

Utilizing these assumptions and considering the Company’s cash balance (excluding the impact of cash collateral deposits held or provided to counterparties, if applicable), short-term investments, and floating-rate debt outstanding at December 31, [removed: 2016,] [added: 2017,] an increase in rates would have a net [removed: negative] [added: positive] effect on the Company’s earnings and cash flows, while a decrease in rates would have a net [removed: positive] [added: negative] effect on the Company’s earnings and cash flows.

Rewritten

The Company is also subject to a financial covenant included in its revolving credit facility, and is subject to credit rating triggers related to its credit card transaction processing agreements, the pricing related to any funds drawn under [added: its revolving credit facility, and some of its hedging counterparty agreements.]

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] the Company was in compliance with this covenant and there were no amounts outstanding under the revolving credit facility.

Rewritten

The Company’s hedging counterparty agreements contain ratings triggers in which [removed: additional] cash collateral could be required to be posted with the counterparty if the Company’s credit rating were to fall below investment grade by two of the three major rating agencies, and if the Company [removed: were] [added: was] in a net liability position with the counterparty.

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] the Company was in compliance with all credit card processing agreements.

Rewritten

[removed: However, the] [added: The] inability to enter into credit card processing agreements would have a material adverse effect on the business of the Company.

New in FY2017

In addition, the Company has 15 remaining Classic aircraft under operating leases which were grounded in September 2017.

New in FY2017

markets in which prices are high and/or rising.

New in FY2017

The Company has found that financial derivative instruments in commodities, such as West Texas Intermediate crude oil, Brent crude oil, and refined products, such as heating oil and unleaded gasoline, can be useful in decreasing its exposure to jet fuel price volatility.

Dropped from FY2016

any open derivative contracts with the counterparty could be subject to early termination, which could result in substantial losses for the Company.

Dropped from FY2016

Given its investment grade credit rating, the Company can meet any additional significant collateral calls by posting aircraft and/or letters of credit.

Dropped from FY2016

As an example, if market prices for the commodities used in the Company’s fuel hedging activities were to decrease by 25 percent from market prices as of December 31, 2016, given the Company’s current fuel derivative portfolio, its aircraft collateral facilities, and its investment grade credit rating, it would likely provide an additional $256 million in collateral.

Dropped from FY2016

The Company would have the option of providing cash, letters of credit, and/or pledging aircraft in order to meet this collateral requirement.

Dropped from FY2016

At December 31, 2016, the Company had $1.6 billion in aircraft available to be posted as collateral.

Dropped from FY2016

In addition, the Company would expect to also benefit from lower market prices paid for fuel used in its operations.

Dropped from FY2016

In recent years, jet fuel prices have been closely correlated with changes in the price of Brent crude oil.

Dropped from FY2016

The Company has attempted to mitigate some of this risk by entering into more fuel hedges based on Brent crude oil.

Dropped from FY2016

Although there is interest rate

Dropped from FY2016

its revolving credit facility, and some of its hedging counterparty agreements.

Dropped from FY2016

As of December 31, 2016, $301 million in cash collateral deposits were provided by the Company under these provisions.

Dropped from FY2016

If the Company’s credit rating had been below investment grade as of that date, the Company would not have been required to post additional cash collateral deposits with fuel hedge counterparties because it had room available under its existing aircraft collateral facilities.

Item 3. Legal Proceedings

25 rewritten, 18 added, 13 removed, 63 unchanged

Rewritten

A complaint alleging violations of federal antitrust laws and seeking certification as a class action was filed against Delta Air Lines, Inc. and AirTran [added: Holdings, Inc. and its subsidiary AirTran Airways, Inc. (collectively with AirTran Holdings, Inc., "AirTran")] in the United States District Court for the Northern District of Georgia in Atlanta on May 22, 2009.

Rewritten

In addition to treble damages for the amount of first baggage fees paid to AirTran and to Delta, the Consolidated Amended Complaint [removed: seeks] [added: sought] injunctive relief against a broad range of alleged anticompetitive activities, as well as attorneys' fees.

Rewritten

On June 18, 2012, the parties filed a Stipulation and Order that plaintiffs [removed: have] abandoned their claim that AirTran and Delta conspired to reduce capacity.

Rewritten

The CID seeks information and documents about the Company’s capacity from January 2010 to the [removed: present] [added: date of the CID] including public statements and communications with third parties about capacity.

Rewritten

In June 2015, the Company also received a letter from the Connecticut Attorney General requesting information about capacity; and on August 21, 2015, the Attorney General of the State of Ohio issued an investigative demand seeking information and documents about the Company’s capacity from December 2013 to the [removed: present.][added: date of the CID.]

Rewritten

The Company denies all allegations of wrongdoing and intends to vigorously defend [removed: these] [added: this] civil [removed: cases.][added: case in Canada.]

Rewritten

In December 2015, the Company entered into Tolling and Discontinuance agreements with putative class counsel in the Federal [removed: Court and] [added: Court,] British [removed: Columbia] [added: Columbia,] and Ontario proceedings and a discontinuance agreement with putative class counsel in the Quebec proceeding.

Rewritten

On [removed: September 28, 2016,] [added: February 14, 2017,] the [removed: plaintiff filed a] [added: Quebec Court granted the plaintiff’s] motion to discontinue the Quebec proceeding against the Company and to stay that proceeding against the other defendants.

Rewritten

The [added: Saskatchewan claim has not been served on the Company, and the] time for the Company to respond to [removed: the remaining complaints] [added: that complaint] has not yet [removed: expired.][added: begun to run.]

Rewritten

The [removed: plaintiffs] [added: plaintiff] in [removed: the remaining complaints] [added: that case] generally [removed: seek] [added: seeks] damages (including punitive damages in certain cases), prejudgment interest, disgorgement of any benefits accrued by the defendants as a result of the allegations, injunctive relief, and attorneys' fees and other costs.

Rewritten

The following information regarding the Company’s executive officers is as of February 1, [removed: 2017.][added: 2018.]

Rewritten

| Gary C. Kelly | Chairman of the Board & Chief Executive Officer | [removed: 61] [added: 62] |

Rewritten

| Thomas M. Nealon | President | [removed: 55] [added: 56] |

Rewritten

| Michael G. Van de Ven | Chief Operating Officer | [removed: 55] [added: 56] |

Rewritten

| Robert E. Jordan | Executive Vice President [removed: & Chief Commercial Officer] [added: Corporate Services] | [removed: 56] [added: 57] |

Rewritten

| Tammy Romo | Executive Vice President & Chief Financial Officer | [removed: 54] [added: 55] |

Rewritten

| Gregory D. Wells | Executive Vice President Daily Operations | [removed: 58] [added: 59] |

Rewritten

| Mark R. Shaw | Senior Vice President, General Counsel, & Corporate Secretary | [removed: 54] [added: 55] |

Rewritten

Mr. Kelly also served as President from July 2008 to January 2017, Executive Vice President & Chief [added: Financial Officer from June 2001 to July 2004, and Vice President Finance & Chief Financial Officer from 1989 to 2001.]

Rewritten

Jordan has served as the [removed: Company’s] [added: Company's] Executive Vice President [removed: & Chief Commercial Officer] [added: Corporate Services] since [removed: September 2011] [added: July 2017] and as President of AirTran Airways, Inc. since May 2011.

Rewritten

Mr. Jordan also served as Executive Vice President [added: & Chief Commercial Officer from September 2011 to July 2017, Executive Vice President] Strategy & Planning from May 2008 to September 2011, Executive Vice President Strategy & Technology from September 2006 to May 2008, Senior Vice President Enterprise Spend Management from August 2004 to September 2006, Vice President Technology from 2002 to 2004, Vice President Purchasing from 2001 to 2002, Controller from 1997 to 2001, Director Revenue Accounting from 1994 to 1997, and Manager Sales Accounting from 1990 to 1994.

Rewritten

[removed: Jeff Lamb] [added: Watterson] has served as the [removed: Company’s] [added: Company's] Executive Vice President [removed: Corporate Services] [added: & Chief Revenue Officer] since July [removed: 2015.][added: 2017.]

Rewritten

Ms. Romo also served as Senior Vice President Finance & Chief Financial Officer from September 2012 to July 2015, Senior Vice President of Planning from February 2010 to September 2012, Vice President of Financial Planning from September 2008 to February 2010, Vice President Controller from February 2006 to August 2008, Vice President Treasurer from September 2004 to February 2006, Senior Director of Investor Relations from March 2002 to September [removed: 2004, Director of Investor Relations from December 1994 to March 2002, Manager of Investor Relations from September 1994 to December 1994, and Manager of Financial Reporting from September 1991 to September 1994.]

Rewritten

Mr. Wells has [removed: almost] [added: over] 35 years of experience with the Company.

Rewritten

Mr. Shaw also served as Vice President, General Counsel, & Corporate Secretary from February 2013 to July [added: 2015 and as Associate General Counsel - Corporate & Transactions from February 2008 to February 2013.]

New in FY2017

Defendants have appealed that decision.

New in FY2017

On March 29, 2017, the Court granted defendants’ motion for summary judgment and dismissed all claims against AirTran.

New in FY2017

On April 13, 2017, the plaintiffs filed a notice of appeal from the district court's judgment, and on April 24, 2017, AirTran filed a conditional notice of cross-appeal to appeal the Court's order certifying a class.

New in FY2017

The appeals of the class certification and summary judgment orders have been consolidated.

New in FY2017

The Court has scheduled oral argument for the appeals on March 7, 2018.

New in FY2017

On December 20, 2017, the Company reached an agreement to settle

New in FY2017

these cases with a proposed class of all persons who purchased domestic airline transportation services from July 1, 2011, to the date of the settlement.

New in FY2017

The Company agreed to pay $15 million and to provide certain cooperation with the plaintiffs as set forth in the settlement agreement.

New in FY2017

The Court granted preliminary approval of the settlement on January 3, 2018, and it is anticipated that the Court will establish a schedule for providing notice to the class, for class members to object or opt out, and for a final fairness hearing.

New in FY2017

The Company denies all allegations of wrongdoing.

New in FY2017

On March 10, 2017, the Ontario Court granted the plaintiff’s motion to discontinue that proceeding as to the Company.

New in FY2017

On September 29, 2017, the Company and the other defendants entered into a tolling agreement suspending any limitations periods that may apply to possible claims among them for contribution and indemnity arising from the Canadian litigation.

New in FY2017

The Company does not currently serve Canada.

New in FY2017

| Andrew M. Watterson | Executive Vice President & Chief Revenue Officer | 51 |

New in FY2017

2004, Director of Investor Relations from December 1994 to March 2002, Manager of Investor Relations from September 1994 to December 1994, and Manager of Financial Reporting from September 1991 to September 1994.

New in FY2017

Andrew M.

New in FY2017

Mr. Watterson also served as Senior Vice President & Chief Revenue Officer from January 2017 to July 2017, Senior Vice President of Network & Revenue from January 2016 to January 2017, and as Vice President of Network Planning & Performance from October 2013 to January 2016.

New in FY2017

Prior to becoming an officer of the Company, Mr. Watterson served as Vice President of Planning and Revenue Management at Hawaiian Airlines from May 2011 to October 2013.

Dropped from FY2016

The parties engaged in extensive discovery, and discovery has now closed.

Dropped from FY2016

The parties filed motions to exclude the opinions of the other parties' experts on class certification and on the merits.

Dropped from FY2016

On January 8, 2016, the parties completed briefing on defendants' motions for summary judgment, plaintiffs' motion for class certification, and the motions to exclude the opinions of experts.

Dropped from FY2016

Defendants submitted a petition to appeal the class certification decision, which the Court of Appeals for the Eleventh Circuit granted on October 7, 2016, and the appeal is ongoing.

Dropped from FY2016

Defendants’ motions for summary judgment have been submitted for decision and are still pending.

Dropped from FY2016

On January 31, 2017, the Court entered a case management schedule

Dropped from FY2016

that calls for discovery to be completed, and for plaintiffs to file a motion for class certification, by April 27, 2018.

Dropped from FY2016

An initial case conference in the Ontario litigation was held on January 27, 2017, and the case managing judge scheduled a motion to discontinue that proceeding as to the Company for March 10, 2017.

Dropped from FY2016

The Company denies all allegations of wrongdoing and intends to vigorously defend these civil cases in Canada.

Dropped from FY2016

| Jeff Lamb | Executive Vice President Corporate Services | 54 |

Dropped from FY2016

Financial Officer from June 2001 to July 2004, and Vice President Finance & Chief Financial Officer from 1989 to 2001.

Dropped from FY2016

Mr. Lamb also served as Executive Vice President & Chief People & Administrative Officer from September 2011 to July 2015, Senior Vice President Administration & Chief People Officer from October 2007 to September 2011, Vice President People & Leadership Development from February 2006 to October 2007, and as Senior Director People Development from December 2004 until February 2006.

Dropped from FY2016

2015 and as Associate General Counsel - Corporate & Transactions from February 2008 to February 2013.

Cover and table of contents

157 rewritten, 90 added, 73 removed, 367 unchanged

Rewritten

10-K 1 [removed: luv-12312016x10k.htm] [added: luv-12312017x10k.htm] FORM 10-K

Rewritten

| | For the fiscal year ended December 31, [removed: 2016] [added: 2017] |

Rewritten

[removed: ![southwestimage.jpg](https://www.sec.gov/Archives/edgar/data/92380/000009238017000029/southwestimage.jpg)][added: ![southwestfinal.jpg](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/southwestfinal.jpg)]

Rewritten

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, [removed: or a] smaller reporting [added: company, or an emerging growth] company.

Rewritten

See the definitions of [removed: “large] [added: "large] accelerated [removed: filer,” “accelerated filer” and “smaller] [added: filer," "accelerated filer," "smaller] reporting [removed: company”] [added: company," and "emerging growth company"] in Rule 12b-2 of the Exchange Act.

Rewritten

| [removed: Large accelerated filer | | þ | | Accelerated filer | | ¨ | |] Non-accelerated filer [removed: | |] ¨ | | Smaller reporting company [removed: | |] ¨ | [removed: |]

Rewritten

The aggregate market value of the common stock held by non-affiliates of the registrant was approximately [removed: $24,270,482,662] [added: $37,211,057,645] computed by reference to the closing sale price of the common stock on the New York Stock Exchange on June 30, [removed: 2016,] [added: 2017,] the last trading day of the registrant’s most recently completed second fiscal quarter.

Rewritten

Number of shares of common stock outstanding as of the close of business on February [removed: 3, 2017: 615,254,524] [added: 5, 2018: 587,950,973] shares

Rewritten

Portions of the Definitive Proxy Statement for the Company’s Annual Meeting of Shareholders to be held May [removed: 17, 2017,] [added: 16, 2018,] are incorporated into Part III of this Annual Report on Form 10-K.

Rewritten

| Item 1. | [removed: [Business](#sBF52A3334A2753EDB682E287A4BCA566)] [added: [Business](#s8CACB078D01F5E199D575A9D4BB07FE5)] | [removed: [4](#sBF52A3334A2753EDB682E287A4BCA566)] [added: [4](#s8CACB078D01F5E199D575A9D4BB07FE5)] |

Rewritten

| Item 1A. | [Risk [removed: Factors](#s11C20A20575F5AD286EF8C56EB38931D)] [added: Factors](#s3E305E87B5855E8982B98D3E49F5701D)] | [removed: [20](#s11C20A20575F5AD286EF8C56EB38931D)] [added: [21](#s3E305E87B5855E8982B98D3E49F5701D)] |

Rewritten

| Item 1B. | [Unresolved Staff [removed: Comments](#s2D37B4C079C553D3A682CC376B1B7075)] [added: Comments](#s5FB7FE874FC75715AEEBA4D9A455ECB1)] | [removed: [26](#s2D37B4C079C553D3A682CC376B1B7075)] [added: [27](#s5FB7FE874FC75715AEEBA4D9A455ECB1)] |

Rewritten

| Item 2. | [removed: [Properties](#sCBDC6FB501245E95B268FD50A1B9D966)] [added: [Properties](#sD416F1B3E7875626A1D705FEB3EF0F70)] | [removed: [26](#sCBDC6FB501245E95B268FD50A1B9D966)] [added: [28](#sD416F1B3E7875626A1D705FEB3EF0F70)] |

Rewritten

| Item 3. | [Legal [removed: Proceedings](#s49AA948F0627572DA25042C9336D5E61)] [added: Proceedings](#s4DB798FAC67E50F4860BCF3825ABFDAA)] | [removed: [28](#s49AA948F0627572DA25042C9336D5E61)] [added: [30](#s4DB798FAC67E50F4860BCF3825ABFDAA)] |

Rewritten

| Item 4. | [Mine Safety [removed: Disclosures](#sB66B9F5B40045F22A44804505BB18010)] [added: Disclosures](#sA175203B0A34516FA8080ADC8963A7C4)] | [removed: [29](#sB66B9F5B40045F22A44804505BB18010)] [added: [31](#sA175203B0A34516FA8080ADC8963A7C4)] |

Rewritten

| Item 5. | [Market for Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity [removed: Securities](#s1D7E6B03D92957ABA03FF8044B61AD1D)] [added: Securities](#sC9DEE18549CD52CAAE2BC1E67F6F4767)] | [removed: [32](#s1D7E6B03D92957ABA03FF8044B61AD1D)] [added: [34](#sC9DEE18549CD52CAAE2BC1E67F6F4767)] |

Rewritten

| Item 6. | [Selected Financial [removed: Data](#sA0EA33312D5D5F668DDAC7AE2AC0CBC9)] [added: Data](#sFB36BCF4E1135BFC8F2B9EA3C96F0C10)] | [removed: [34](#sA0EA33312D5D5F668DDAC7AE2AC0CBC9)] [added: [37](#sFB36BCF4E1135BFC8F2B9EA3C96F0C10)] |

Rewritten

| Item 7. | [Management’s Discussion and Analysis of Financial Condition and Results of [removed: Operations](#sFCC7B348993058999E391799154EB859)] [added: Operations](#s754993E3789753CAB06975084773D1CF)] | [removed: [36](#sFCC7B348993058999E391799154EB859)] [added: [39](#s754993E3789753CAB06975084773D1CF)] |

Rewritten

| | [Liquidity and Capital [removed: Resources](#sB5FE867D0AC85A50A7825C3E1961A35E)] [added: Resources](#sD22CB1608B015F4494A8884142337F65)] | [removed: [49](#sB5FE867D0AC85A50A7825C3E1961A35E)] [added: [55](#sD22CB1608B015F4494A8884142337F65)] |

Rewritten

| | [Off-Balance Sheet Arrangements, Contractual Obligations, and Contingent Liabilities and [removed: Commitments](#sB5A59AC88A0353CC8BB9322F038E7A24)] [added: Commitments](#s4A68CD19FD055BB2A88E418FE3AD8F46)] | [removed: [51](#sB5A59AC88A0353CC8BB9322F038E7A24)] [added: [57](#s4A68CD19FD055BB2A88E418FE3AD8F46)] |

Rewritten

| | [Critical Accounting Policies and [removed: Estimates](#s6599287EE105547B8424EF709A60113B)] [added: Estimates](#s12F63C13861357CA84F311F13222B664)] | [removed: [54](#s6599287EE105547B8424EF709A60113B)] [added: [59](#s12F63C13861357CA84F311F13222B664)] |

Rewritten

| Item 7A. | [Quantitative and Qualitative Disclosures About Market [removed: Risk](#s88253CC3DE11555EAF47D78314A18368)] [added: Risk](#sFBDDEAC6295F5D138A2E613ABF686CED)] | [removed: [60](#s88253CC3DE11555EAF47D78314A18368)] [added: [66](#sFBDDEAC6295F5D138A2E613ABF686CED)] |

Rewritten

| Item 8. | [Financial Statements and Supplementary [removed: Data](#s1C6594E502915E9FA0CD3970251F9720)] [added: Data](#s011A96757716573AB6AC9366F7FE8CFA)] | [removed: [63](#s1C6594E502915E9FA0CD3970251F9720)] [added: [71](#s011A96757716573AB6AC9366F7FE8CFA)] |

Rewritten

| | [Southwest Airlines Co. Consolidated Balance [removed: Sheet](#s06BB168C1C525326B6E295C3D1EC824C)] [added: Sheet](#sCDC9D9947F165AD1A3308B39CAD0E327)] | [removed: [63](#s06BB168C1C525326B6E295C3D1EC824C)] [added: [71](#sCDC9D9947F165AD1A3308B39CAD0E327)] |

Rewritten

| | [Southwest Airlines Co. Consolidated Statement of [removed: Income](#s9B0259E7C2A850EA989CCD10F80FB408)] [added: Income](#sD0F271D1667655F4AD0F5DE4AD45DF8A)] | [removed: [64](#s9B0259E7C2A850EA989CCD10F80FB408)] [added: [72](#sD0F271D1667655F4AD0F5DE4AD45DF8A)] |

Rewritten

| | [Southwest Airlines Co. Consolidated Statement of Comprehensive [removed: Income](#sAAF911135F6C52E698991866A21104AA)] [added: Income](#sFBBAD60C18395E82BF9B297ED8266DC6)] | [removed: [65](#sAAF911135F6C52E698991866A21104AA)] [added: [73](#sFBBAD60C18395E82BF9B297ED8266DC6)] |

Rewritten

| | [Southwest Airlines Co. Consolidated Statement of Stockholders’ [removed: Equity](#s4FD5968B8825504781B641220682815E)] [added: Equity](#s88FA8807426450E8A969C647DA9B47E0)] | [removed: [66](#s4FD5968B8825504781B641220682815E)] [added: [73](#s88FA8807426450E8A969C647DA9B47E0)] |

Rewritten

| | [Southwest Airlines Co. Consolidated Statement of Cash [removed: Flows](#s30D88EEBE39F5DDE9A6F8FF761035A33)] [added: Flows](#s769371C3879959ACB3C1B7A2BBFF5BD7)] | [removed: [67](#s30D88EEBE39F5DDE9A6F8FF761035A33)] [added: [74](#s769371C3879959ACB3C1B7A2BBFF5BD7)] |

Rewritten

| | [Notes to Consolidated Financial [removed: Statements](#sE54E1DD70F2E53C6AC31C256A2F37FDB)] [added: Statements](#sCDCD4FFF862D548395A9F9800C6333A2)] | [removed: [68](#sE54E1DD70F2E53C6AC31C256A2F37FDB)] [added: [75](#sCDCD4FFF862D548395A9F9800C6333A2)] |

Rewritten

| Item 9. | [Changes in and Disagreements With Accountants on Accounting and Financial [removed: Disclosure](#sF8CF722E4B0451878EFC200C64F9C8A1)] [added: Disclosure](#s97D550C19E6B5EF29F2376AEA8C5CB27)] | [removed: [106](#sF8CF722E4B0451878EFC200C64F9C8A1)] [added: [113](#s97D550C19E6B5EF29F2376AEA8C5CB27)] |

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| Item 9A. | [Controls and [removed: Procedures](#s0402287DF69955459714C883DF41D1EA)] [added: Procedures](#s6B3216642AEF5916823437033EAF7176)] | [removed: [106](#s0402287DF69955459714C883DF41D1EA)] [added: [113](#s6B3216642AEF5916823437033EAF7176)] |

Rewritten

| Item 9B. | [Other [removed: Information](#sF726D3968F0C565F95B1A85563F1346C)] [added: Information](#s574C9B1403BE5D0381C85B62858A4CCB)] | [removed: [107](#sF726D3968F0C565F95B1A85563F1346C)] [added: [114](#s574C9B1403BE5D0381C85B62858A4CCB)] |

Rewritten

| Item 10. | [Directors, Executive Officers, and Corporate [removed: Governance](#sD83C8497728E57C981277A2E0ABA5CD9)] [added: Governance](#s7402175E0A03502B93380C13BB51CB50)] | [removed: [107](#sD83C8497728E57C981277A2E0ABA5CD9)] [added: [115](#s7402175E0A03502B93380C13BB51CB50)] |

Rewritten

| Item 11. | [Executive [removed: Compensation](#sABE107F5F2175036A2CF275BA5DEDFFA)] [added: Compensation](#s3B84D45FAA675D2DA0B56F343C6B9244)] | [removed: [107](#sABE107F5F2175036A2CF275BA5DEDFFA)] [added: [115](#s3B84D45FAA675D2DA0B56F343C6B9244)] |

Rewritten

| Item 12. | [Security Ownership of Certain Beneficial Owners and Management and Related Stockholder [removed: Matters](#s609E1011C6A85053BBB827C6FBC79C5A)] [added: Matters](#sC4CD0C4AFB745F97AE9E71FA6F4259D2)] | [removed: [107](#s609E1011C6A85053BBB827C6FBC79C5A)] [added: [115](#sC4CD0C4AFB745F97AE9E71FA6F4259D2)] |

Rewritten

| Item 13. | [Certain Relationships and Related Transactions, and Director [removed: Independence](#sB3CCC15F7BFC52D9A4ADCEC080C9BF0C)] [added: Independence](#s22B906B229DF52FF92461553EB18B793)] | [removed: [108](#sB3CCC15F7BFC52D9A4ADCEC080C9BF0C)] [added: [116](#s22B906B229DF52FF92461553EB18B793)] |

Rewritten

| Item 14. | [Principal Accounting Fees and [removed: Services](#s150450E5E69850BDB6A1F4DC05BC6C8B)] [added: Services](#s885DF2B30426532484C332CEC211B4DF)] | [removed: [108](#s150450E5E69850BDB6A1F4DC05BC6C8B)] [added: [116](#s885DF2B30426532484C332CEC211B4DF)] |

Rewritten

| Item 15. | [Exhibits and Financial Statement [removed: Schedules](#sCB19C84AB9355151959CC8C0A7DBA5E0)] [added: Schedules](#sC8195BF6911152768E2FF1CB1C2CCC99)] | [removed: [109](#sCB19C84AB9355151959CC8C0A7DBA5E0)] [added: [117](#sC8195BF6911152768E2FF1CB1C2CCC99)] |

Rewritten

For the [removed: 44th] [added: 45th] consecutive year, the Company was profitable, earning [removed: $2.2] [added: $3.5] billion in net income.

Rewritten

At December 31, [removed: 2016,] [added: 2017,] Southwest operated a total of [removed: 723] [added: 706] Boeing 737 aircraft and served [removed: 101] [added: 100] destinations in 40 states, the District of Columbia, the Commonwealth of Puerto Rico, and [removed: eight] [added: ten] near-international countries: Mexico, Jamaica, The Bahamas, Aruba, Dominican Republic, Costa Rica, Belize, [added: Cuba, the Cayman Islands,] and [removed: Cuba.][added: Turks and Caicos.]

New in FY2017

| Large accelerated filer þ | | Accelerated filer ¨ |

New in FY2017

| | | Emerging growth company ¨ |

New in FY2017

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

New in FY2017

| --- | --- | --- |

New in FY2017

| | | |

New in FY2017

| | | |

New in FY2017

| Item 16. | [Form 10-K Summary](#s75cecd6c78874e1d965cdbeec0f3ee9c) | [122](#s75cecd6c78874e1d965cdbeec0f3ee9c) |

New in FY2017

| [Signatures](#sA39960FC1A0D566D8115C04C75632BDC) | | [123](#sA39960FC1A0D566D8115C04C75632BDC) |

New in FY2017

During 2017, the Company announced plans to begin selling tickets in 2018 for service to Hawaii, subject to requisite governmental approvals, including approval from the Federal Aviation Administration ("FAA") for Extended Operations ("ETOPS"), a regulatory requirement to operate between the U.S. mainland and the Hawaiian Islands.

New in FY2017

The Company further announced its decision to cease service at Bishop International Airport in Flint, Michigan, with the last day of service on June 6, 2018.

New in FY2017

In January 2018, the Company announced its intent to begin service at a new commercial aircraft facility at Paine Field in Everett, Washington, scheduled to be completed in 2018.

New in FY2017

In 2017, the Company completed its deployment of a new single reservation system, the largest technology project in the Company's history.

New in FY2017

The new reservation system was designed to improve flight scheduling and inventory management, enable revenue enhancements, support additional international growth, and enable other foundational and operational capabilities.

New in FY2017

Further, in 2017, the Company became the first airline in North America to offer scheduled service utilizing Boeing's new, more fuel efficient, 737 MAX 8 aircraft.

New in FY2017

The Company also retired its remaining Boeing 737-300 aircraft.

New in FY2017

Strategic capacity increases are expected to continue in 2018.

New in FY2017

In 2017, the airline industry continued to be impacted by the significant growth of "Ultra-Low Cost Carriers" ("ULCCs").

New in FY2017

ULCCs offer "unbundled" service offerings, which enable them to appeal to price-sensitive travelers through promotion to consumers of an extremely low relative base fare for a seat, while separately charging for related services and products.

New in FY2017

In response, certain major U.S. airlines (sometimes referred to as "legacy" or "network" carriers) have introduced new fare products, such as a "Basic Economy" product.

New in FY2017

The Basic Economy product provides for a lower

New in FY2017

base fare to compete with a ULCC base fare, but includes significant additional restrictions on amenities such as seat assignments (including restrictions on group and family seating), order of boarding, checked baggage and use of overhead bin space, flight changes and refunds, and eligibility for upgrades.

New in FY2017

Also in response to ULCC pricing, some legacy carriers have removed their fare floors for certain routes, leading to lower fares across the industry.

New in FY2017

Conversely, some legacy carriers offer a "Premium Economy" fare that targets consumers willing to pay extra for additional amenities such as more favorable seating options in segmented aircraft.

New in FY2017

The Company continued its focus on California in 2017, and continues to invest significant resources to solidify its leadership position in California, including the planned addition of new domestic and international destination options and flights for California Customers, as well as additional marketing programs, loyalty incentives, and local outreach efforts designed to retain, engage, and acquire Customers.

New in FY2017

During 2017, the Company commenced international service out of Oakland, San Diego, Nashville, and St. Louis.

New in FY2017

In addition, the Company announced commencement in 2018 of international service out of Indianapolis, San Jose, Sacramento, Columbus, New Orleans, Pittsburgh, and Raleigh-Durham.

New in FY2017

The Company has also concentrated its service to Cuba in Havana and ceased operations during 2017 to Varadero and Santa Clara, Cuba.

New in FY2017

In 2017, to further support its near-international operations, the Company opened a new five-gate international concourse at Fort Lauderdale-Hollywood International Airport (FLL).

New in FY2017

The Company expanded its international flight schedule for South Florida to a total of nine international nonstop destinations including Montego Bay, Jamaica; Belize City, Belize; Cancun, Mexico; Grand Cayman; Havana, Cuba; Nassau, The Bahamas; San Jose, Costa Rica; Punta Cana, Dominican Republic; and Turks and Caicos.

New in FY2017

| 2017 | | $ | 3,940 | | | $ | 1.92 | | | 22.3 | % |

New in FY2017

| First Quarter 2017 | | $ | 922 | | | $ | 1.89 | | | 21.8 | % |

New in FY2017

| Second Quarter 2017 | | $ | 990 | | | $ | 1.84 | | | 22.0 | % |

New in FY2017

| Third Quarter 2017 | | $ | 1,003 | | | $ | 1.92 | | | 22.6 | % |

New in FY2017

| Fourth Quarter 2017 | | $ | 1,025 | | | $ | 2.04 | | | 22.8 | % |

New in FY2017

The Company retired all remaining Boeing 737-300 aircraft

New in FY2017

from its fleet in September 2017 and began scheduled service with its first Boeing 737 MAX 8 aircraft in October 2017.

New in FY2017

The Boeing 737 MAX 8 is expected to significantly reduce fuel use and CO2 emissions, as compared with the Company's other aircraft.

New in FY2017

The Company ended 2017 with 13 Boeing 737 MAX 8 aircraft in its fleet.

New in FY2017

| • | "Wanna Get Away" fares are generally the lowest fares and are typically subject to advance purchase requirements. They are nonrefundable, but, subject to Southwest's No Show Policy, funds may be applied to future travel on Southwest. |

New in FY2017

Southwest's No Show Policy applies if a Customer does not change or cancel a flight segment at least ten minutes prior to scheduled departure and the Customer does not travel on the scheduled flight.

Dropped from FY2016

| | | | | | | | | | | | | | | | |

Dropped from FY2016

| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

Dropped from FY2016

| [Signatures](#s35E54FFD1A2551CDBF23487A391D72DD) | | [114](#s35E54FFD1A2551CDBF23487A391D72DD) |

Dropped from FY2016

The Company also expanded its domestic footprint during 2016, with the commencement of service at Long Beach Airport, the Company's fifth service point in the L.A. Basin and tenth airport in California.

Dropped from FY2016

General

Dropped from FY2016

airports, by adding seats for such routes without increasing the number of flights (a “slot” is the right of an air carrier, pursuant to regulations of the Federal Aviation Administration (“FAA”), to operate a takeoff or landing at a specific time at certain airports).

Dropped from FY2016

With the addition of Long Beach Airport to the Company’s route map in 2016, the Company added four weekday flights from Long Beach to Oakland, which, in turn, has brought connectivity between Long Beach and 20 cities on the Southwest network across the Pacific Northwest and mid-America.

Dropped from FY2016

The Company has announced plans to add service, beginning in June 2017, to Cincinnati/Northern Kentucky International Airport and, subject to requisite government approvals, to Owen Roberts International Airport in Grand Cayman.

Dropped from FY2016

International Service

Dropped from FY2016

During 2016, the Company commenced international service out of Los Angeles International Airport by introducing service to Liberia, Costa Rica, and later to three airports in Mexico’s coastal regions: Cancun, San Jose del Cabo/Los Cabos, and Puerto Vallarta.

Dropped from FY2016

Also during 2016, the Company began scheduled international service from Fort Lauderdale with daily service to Nassau, Bahamas.

Dropped from FY2016

The Company has also announced its first ever international service from Oakland International Airport and San Diego International Airport, its 14th and 15th international gateway cities within the 48 contiguous United States, with daily flights from Oakland to San Jose del Cabo/Los Cabos and Puerto Vallarta scheduled to begin in February 2017 and from San Diego to San Jose del Cabo/Los Cabos scheduled to begin in April 2017.

Dropped from FY2016

In connection with the scheduled opening of a new five-gate international concourse at Fort Lauderdale-Hollywood International Airport (FLL) in June 2017, the Company has announced a significantly expanded international flight schedule for South Florida to a total of eight international nonstop destinations.

Dropped from FY2016

In addition to existing service, beginning in June 2017, the Company is scheduled to offer new daily international nonstop service from Fort Lauderdale to Montego Bay, Jamaica; Belize City, Belize; and Cancun, Mexico, and subject to requisite government approvals, Grand Cayman.

Dropped from FY2016

The Company's operating revenues in 2014 included the operating revenues of AirTran Airways ("AirTran").

Dropped from FY2016

AirTran's final passenger service occurred on December 28, 2014, and it has been integrated into Southwest.

Dropped from FY2016

and Ft.

Dropped from FY2016

| First Quarter 2016 | | $ | 852 | | | $ | 1.80 | | | 21.9 | % |

Dropped from FY2016

| Second Quarter 2016 | | $ | 903 | | | $ | 1.75 | | | 22.0 | % |

Dropped from FY2016

| Third Quarter 2016 | | $ | 941 | | | $ | 1.83 | | | 21.2 | % |

Dropped from FY2016

| Fourth Quarter 2016 | | $ | 952 | | | $ | 1.90 | | | 22.5 | % |

Dropped from FY2016

The Company also announced its intent to accelerate the retirement of its 737-300 aircraft to no later than third quarter 2017, when it is scheduled to take delivery of its first, more fuel-efficient, Boeing 737-8 aircraft.

Dropped from FY2016

| • | “Wanna Get Away” fares are generally the lowest fares and are typically subject to advance purchase requirements. They are nonrefundable but, subject to compliance with Southwest’s No Show policy, funds may be applied to future travel on Southwest without a change fee. Southwest’s No Show policy applies if a Customer has booked a nonrefundable fare anywhere in his/her itinerary and that portion of the flight is not used and not canceled or changed by the Customer at least ten minutes prior to scheduled departure. In such event, subject to certain exceptions, all unused funds on the full itinerary will be forfeited, and the remaining reservation will be canceled. The intent of the No Show policy is to promote Customer behavior that will enable Southwest to re-sell the open seat prior to departure. |

Dropped from FY2016

Southwest offers inflight satellite-based WiFi service on all of its 737-700 and 737-800 aircraft, representing over 87 percent of Southwest’s fleet.

Dropped from FY2016

Southwest’s Customers with small portable electronic devices are able to utilize the airline’s onboard WiFi from gate-to-gate when traveling on a Southwest WiFi-enabled aircraft.

Dropped from FY2016

Southwest was the first carrier to offer gate-to-gate connectivity.

Dropped from FY2016

Due to licensing restrictions, free live TV may not be available onboard WiFi-enabled

Dropped from FY2016

international flights.

Dropped from FY2016

In late 2016, the Company entered into new WiFi connectivity agreements designed to yield greater WiFi bandwidth available to Customers on WiFi-equipped aircraft beginning in mid-2017.

Dropped from FY2016

By the end of 2017, the Company expects to operate a 100 percent WiFi-equipped fleet.

Dropped from FY2016

The program continues to exceed the Company’s expectations with respect to the number of Members added, the amount spent per Member on airfare, the number of flights taken by Members, the number of Southwest’s co-branded Chase Visa credit card holders added, the number of points sold to business partners, and the number of frequent flyer points purchased by Members.

Dropped from FY2016

During 2015, the Company entered into an amended co-branded credit card agreement with Chase Bank USA, N.A. Additional information regarding this amended co-branded credit card agreement, including the effect of the resulting change in accounting methodology, is provided below under “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and in Note 1 to the Consolidated Financial Statements.

Dropped from FY2016

During 2014, the Company also operated AirTran.

Dropped from FY2016

Southwest.com

Dropped from FY2016

The Company’s Internet website, Southwest.com®, is the only avenue for Southwest Customers to purchase and manage travel online.

Dropped from FY2016

Customers’ trips can be planned and managed directly from the Southwest.com home page.

Dropped from FY2016

The “My Account” section of the website provides a detailed view into a Customer’s travel and loyalty activity.

Dropped from FY2016

Additionally, Southwest offers Customers a mobile website and apps (iOS and Android) to provide Customers the ability to transact with Southwest anytime they have access to their mobile device.

Dropped from FY2016

The Company introduced a new Heart aircraft livery, airport experience, and logo.

Dropped from FY2016

Aircraft already in the Company's fleet were scheduled to receive the newly painted livery within the aircraft's existing repainting schedule, while new aircraft have been delivered in the Heart livery.

An excerpt. Shown here: 40 of 157 rewritten, 40 of 90 added and 40 of 73 removed. The counts are complete. For every sentence, read Cover and table of contents in the FY2017 filing and the FY2016 filing.

Item 2. Properties

26 rewritten, 6 added, 11 removed, 18 unchanged

Rewritten

Southwest operated a total of [removed: 723] [added: 706] Boeing 737 aircraft as of December 31, [removed: 2016,] [added: 2017,] of which [removed: 83] [added: 53] and [removed: 51] [added: 69] were under operating and capital leases, respectively.

Rewritten

The following table details information on the [removed: 723] [added: 706] aircraft as of December 31, [removed: 2016:][added: 2017:]

Rewritten

| 737-700 | | 143 | | [removed: 13] [added: 14] | | | [removed: 494] [added: 512] | | | 397 | | | [removed: 97] [added: 115] | |

Rewritten

| 737-800 | | 175 | | [removed: 2] [added: 3] | | | [removed: 142] [added: 181] | | | [removed: 135] [added: 174] | | | 7 | |

Rewritten

| (a) | As discussed further in Note 6 to the Consolidated Financial Statements, [removed: 202] [added: 203] of the Company's aircraft were pledged as collateral as of December 31, [removed: 2016,] [added: 2017,] for secured borrowings and/or in the case that the Company has obligations related to its fuel derivative instruments with counterparties that exceed certain thresholds. |

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] the Company had firm deliveries and options for Boeing 737-700, 737-800, [removed: 737-7,] [added: 737 MAX 7,] and [removed: 737-8] [added: 737 MAX 8] aircraft as follows:

Rewritten

| | The Boeing Company | | | | | | | | | | | | | | | [removed: | | |]

Rewritten

| | \-800 Firm Orders | | [removed: \-800 Options | | | \-7] [added: MAX 7] Firm Orders | | [removed: \-8] [added: MAX 8] Firm Orders | | | [removed: \-8] [added: MAX 8] Options | | | Additional -700s | | | Total | |

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| 2018 | [removed: 21 | | 9 |] [added: 26] | | — | | [removed: 13] [added: 14] | | | — | | | 4 | | | [removed: 47] [added: 44] | |

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| 2019 | — | | [removed: — |] [added: 7] | | 15 | | [removed: —] | [removed: | | 5] [added: —] | | | — | | | [removed: 20] [added: 22] | |

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| 2020 | — | | — | | [added: 25] | [removed: 14] | | — | | | [removed: 8 | | |] — | | | [removed: 22] [added: 25] | |

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| 2021 | — | | — | | [removed: | 1 | | 13] [added: 34] | | | [removed: 18] [added: —] | | | — | | | [removed: 32] [added: 34] | |

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| 2022 | — | | — | | [removed: | — | | 15] [added: 17] | | | [removed: 19] [added: 14] | | | — | | | [removed: 34] [added: 31] | |

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| 2023 | — | | [removed: — | | | —] [added: 12] | | [removed: 34] [added: 22] | | | 23 | | | — | | | 57 | |

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| 2024 | — | | [removed: — | | | —] [added: 11] | | [removed: 41] [added: 30] | | | 23 | | | — | | | 64 | |

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| 2025 | — | | — | | [removed: | — | |] 40 | | | 36 | | | — | | | 76 | |

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| 2026 | — | | — | | [removed: |] — | | [removed: —] | [removed: | |] 36 | | | — | | | 36 | |

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| 2027 | — | | — | | [removed: |] — | | [removed: —] | [removed: | |] 23 | | | — | | | 23 | |

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[removed: (b)] [added: (a)] The Company has flexibility to substitute [removed: 737-7] [added: 737 MAX 7] in lieu of [removed: 737-8] [added: 737 MAX 8] firm orders beginning in 2019.

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[removed: (c)] [added: (b)] To be acquired in leases from various third parties.

Rewritten

The Company leases the land and/or structures on a long-term basis for its aircraft maintenance centers (located at Dallas Love Field, Houston Hobby, Phoenix Sky Harbor, Chicago Midway, Hartsfield-Jackson Atlanta International Airport, and Orlando International [removed: Airport), its current flight training center at Dallas Love Field (which currently houses Boeing 737 flight simulators),] [added: Airport)] and its main corporate headquarters building, also located [removed: at] [added: near] Dallas Love Field.

Rewritten

The Company has commitments associated with various airport improvement projects, including ongoing construction at [removed: Fort Lauderdale-Hollywood International Airport and] Los Angeles International Airport.

Rewritten

In 2016, the Company broke ground on an additional headquarters [removed: building,] [added: complex,] called [removed: Wings, designed] [added: the Wings Complex, consisting of a Leadership Education and Aircrew Development (LEAD) Center (designed] to house flight [removed: simulators,] [added: simulators and] classroom space for Pilot [removed: training, and] [added: training), an] additional [removed: work areas.][added: office building, and a parking garage.]

Rewritten

The Wings [removed: building] [added: Complex] is scheduled to be completed in 2018 and is also located across the street from the [removed: Company’s] [added: Company's] main headquarters building on land owned by the Company.

Rewritten

The Company [removed: expects to begin] [added: began] moving its [removed: 12] [added: Boeing] 737 flight simulators to the [removed: Wings building] [added: LEAD Center] during 2017 and expects to have [removed: all of its] [added: 15 Boeing 737] flight simulators in the [removed: Wings building] [added: LEAD Center] by mid-2018.

Rewritten

As of December 31, [removed: 2016,] [added: 2017,] the Company operated seven Customer Support and Services call centers.

New in FY2017

| 737 MAX 8 | | 175 | | — | | | 13 | | | 13 | | | — | |

New in FY2017

| Totals | | | | 11 | | | 706 | | | 584 | | | 122 | |

New in FY2017

| | | | | | | | | | | | | | | | |

New in FY2017

| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

New in FY2017

| | | | | | | | | | | | | | | | |

New in FY2017

| | 26 | | 30 | | 197 | | (a) | 155 | | | 4 | | (b) | 412 | |

Dropped from FY2016

| 737-300 | | 137 or 143 | | 22 | | | 87 | | (b) | 57 | | | 30 | |

Dropped from FY2016

| Totals | | | | 12 | | | 723 | | | 589 | | | 134 | |

Dropped from FY2016

| | |

Dropped from FY2016

| --- | --- |

Dropped from FY2016

| (b) | Of the total, 77 737-300 aircraft have 143 seats and 10 have 137 seats. |

Dropped from FY2016

| | | | | | | | | | | | | | | | | | | |

Dropped from FY2016

| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

Dropped from FY2016

| 2017 | 39 | | — | | | — | | 14 | | | — | | | 14 | | | 67 | |

Dropped from FY2016

| | 60 | | 9 | | (a) | 30 | | 170 | | (b) | 191 | | | 18 | | (c) | 478 | |

Dropped from FY2016

(a) Includes two -800 options exercised in January 2017.

Dropped from FY2016

In 2017, the Company expects to add a pedestrian safety bridge to its corporate campus in order to connect the main headquarters building, the TOPS building, and the Wings building.

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities

14 rewritten, 22 added, 15 removed, 25 unchanged

Rewritten

As of February [removed: 3, 2017,] [added: 5, 2018,] there were approximately [removed: 12,850] [added: 12,531] holders of record of the Company’s common stock.

Rewritten

The following graph compares the cumulative total shareholder return on the Company’s common stock over the five-year period ended December 31, [removed: 2016,] [added: 2017,] with the cumulative total return during such period of the Standard and Poor’s 500 Stock Index and the NYSE ARCA Airline Index.

Rewritten

The comparison assumes $100 was invested on December 31, [removed: 2011,] [added: 2012,] in the Company’s common stock and in each of the foregoing indices and assumes reinvestment of dividends.

Rewritten

[removed: ![luv-1231201_chartx10062.jpg](https://www.sec.gov/Archives/edgar/data/92380/000009238017000029/luv-1231201_chartx10062.jpg)][added: ![chart.jpg](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/chart.jpg)]

Rewritten

| | | [removed: 12/31/2011 | | | |] 12/31/2012 | | | | 12/31/2013 | | | | 12/31/2014 | | | | 12/31/2015 | | | | 12/31/2016 | | | [added: | 12/31/2017 | | |]

Rewritten

| Issuer Purchases of Equity Securities (1) | | | | | | | | | | | | | | | | [removed: |]

Rewritten

| | | | | | | | | | [removed: |] Total number of | | | Maximum dollar | | | |

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| | | | | | | | | | [removed: |] shares purchased | | | value of shares that | | | |

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| | | Total number | | | Average | | | | [removed: |] as part of publicly | | | may yet be purchased | | | |

Rewritten

| | | of shares | | | price paid | | | | [removed: |] announced plans | | | under the plans | | | |

Rewritten

| Period | | purchased | | | per share | | | | [removed: |] or programs | | | or programs | | | |

Rewritten

| (1) | On May [removed: 18, 2016,] [added: 17, 2017,] the Company’s Board of Directors authorized the repurchase of up to $2.0 billion of the Company’s common stock. Repurchases are made in accordance with applicable securities laws in open market, private, or accelerated repurchase transactions from time to time, depending on market conditions, and may be discontinued at any time. |

Rewritten

| (2) | Under an accelerated share repurchase program entered into by the Company with a third party financial institution in third quarter [removed: 2016] [added: 2017] (the "Third Quarter [removed: 2016] [added: 2017] ASR Program"), the Company paid [removed: $250] [added: $300] million and received an initial delivery of [removed: 4,956,384] [added: 4,130,592] shares during [removed: third quarter 2016,] [added: August 2017,] representing an estimated 75 percent of the shares to be purchased by the Company under the Third Quarter [removed: 2016] [added: 2017] ASR Program based on a [added: volume-weighted average] price of [removed: $37.83] [added: $54.4716] per share, which was the closing price of the Company’s common stock on the New York Stock Exchange [removed: on July 22, 2016.] [added: during a calculation period between August 1, 2017 and August 24, 2017.] Final settlement of [removed: this] [added: the] Third Quarter [removed: 2016] [added: 2017] ASR Program occurred in October [removed: 2016] [added: 2017] and was determined based generally on a discount to the volume-weighted average price per share of the Company's common stock during a calculation period completed in October [removed: 2016.] [added: 2017.] Upon settlement, the third party financial institution delivered [removed: 1,709,877] [added: 1,206,365] additional shares of the Company’s common stock to the Company. In total, the average purchase price per share for the [removed: 6,666,261] [added: 5,336,957] shares repurchased under the Third Quarter [removed: 2016] [added: 2017] ASR Program, upon completion of the Third Quarter [removed: 2016] [added: 2017] ASR Program in October [removed: 2016,] [added: 2017,] was [removed: $37.5023.] [added: $56.2118.] |

Rewritten

| (3) | Under an accelerated share repurchase program entered into by the Company with a third party financial institution in fourth quarter [removed: 2016] [added: 2017] (the "Fourth Quarter [removed: 2016] [added: 2017] ASR Program"), the Company paid [removed: $300] [added: $250] million in November [removed: 2016] [added: 2017] and received an initial delivery of [removed: 4,723,420] [added: 3,323,537] shares during December [removed: 2016,] [added: 2017,] representing an estimated 75 percent of the shares to be purchased by the Company under the Fourth Quarter [removed: 2016] [added: 2017] ASR Program based on a volume-weighted average price of [removed: $47.6350] [added: $56.4158] per share of the Company’s common stock on the New York Stock Exchange during a calculation period between November [removed: 18, 2016] [added: 8, 2017] and December [removed: 8, 2016. The specific number] [added: 6, 2017. Final settlement] of [removed: shares that] the [removed: Company ultimately will repurchase under the] Fourth Quarter [removed: 2016] [added: 2017] ASR Program [removed: will be] [added: occurred in January 2018 and was] determined based generally on a discount to the volume-weighted average price per share of the [removed: Company’s] [added: Company's] common stock during a calculation period [removed: to be] completed in [removed: February 2017. At] [added: January 2018. Upon] settlement, [removed: under certain circumstances,] the third party financial institution [removed: may be required to deliver] [added: delivered 736,838] additional shares of [added: the Company’s] common stock to the [removed: Company, or under certain circumstances,] [added: Company. In total,] the [removed: Company may be required to deliver] [added: average purchase price per share for the 4,060,375] shares [added: repurchased under the Fourth Quarter 2017 ASR Program, upon completion] of [removed: its common stock or may elect to make a cash payment to] the [removed: third party financial institution.] [added: Fourth Quarter 2017 ASR Program in January 2018, was $61.5707.] |

New in FY2017

| 2017 | | | | | | | | | | | | |

New in FY2017

| 1st Quarter | | $ | 0.10000 | | | $ | 59.68 | | | $ | 48.75 | |

New in FY2017

| 2nd Quarter | | 0.12500 | | | | 62.74 | | | | 52.89 | | |

New in FY2017

| 3rd Quarter | | 0.12500 | | | | 64.39 | | | | 49.76 | | |

New in FY2017

| 4th Quarter | | 0.12500 | | | | 66.99 | | | | 52.78 | | |

New in FY2017

| Southwest Airlines Co. | | $ | 100 | | | $ | 185 | | | $ | 418 | | | $ | 428 | | | $ | 500 | | | $ | 661 | |

New in FY2017

| S&P 500 | | $ | 100 | | | $ | 132 | | | $ | 150 | | | $ | 152 | | | $ | 170 | | | $ | 206 | |

New in FY2017

| NYSE ARCA Airline | | $ | 100 | | | $ | 158 | | | $ | 237 | | | $ | 201 | | | $ | 258 | | | $ | 274 | |

New in FY2017

| | | | | | | | | | | | | | | | |

New in FY2017

| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

New in FY2017

| | | | | | | | | | | | | | | | |

New in FY2017

| | | (a) | | | (b) | | | | (c) | | | (d) | | | |

New in FY2017

| October 1, 2017 through October 31, 2017 | | 1,206,365 | | | $ | — | | (2) | 1,206,365 | | | $ | 1,700,000,000 | | |

New in FY2017

| November 1, 2017 through November 30, 2017 | | 670,000 | | | $ | — | | (3)(4) | 670,000 | | | $ | 1,410,017,716 | | |

New in FY2017

| December 1, 2017 through December 31, 2017 | | 4,280,204 | | | $ | — | | (3)(5) | 4,280,204 | | | $ | 1,350,032,588 | | |

New in FY2017

| Total | | 6,156,569 | | | | | | | 6,156,569 | | | | | | |

New in FY2017

| | |

New in FY2017

| --- | --- |

New in FY2017

| (4) | During the period from November 29, 2017 through November 30, 2017, the Company repurchased 670,000 shares of its common stock on the open market at an average price of $59.6751 per share. |

New in FY2017

| | |

New in FY2017

| --- | --- |

New in FY2017

| (5) | During the period from December 1, 2017 through December 15, 2017, the Company repurchased 956,667 shares of its common stock on the open market at an average price of $62.7022 per share. |

Dropped from FY2016

| 2015 | | | | | | | | | | | | |

Dropped from FY2016

| 1st Quarter | | $ | 0.06000 | | | $ | 47.17 | | | $ | 38.26 | |

Dropped from FY2016

| 2nd Quarter | | 0.07500 | | | | 44.19 | | | | 33.02 | | |

Dropped from FY2016

| 3rd Quarter | | 0.07500 | | | | 40.87 | | | | 31.36 | | |

Dropped from FY2016

| 4th Quarter | | 0.07500 | | | | 51.34 | | | | 37.00 | | |

Dropped from FY2016

| Southwest Airlines Co. | | $ | 100 | | | $ | 120 | | | $ | 222 | | | $ | 502 | | | $ | 514 | | | $ | 600 | |

Dropped from FY2016

| S&P 500 | | $ | 100 | | | $ | 116 | | | $ | 153 | | | $ | 177 | | | $ | 176 | | | $ | 197 | |

Dropped from FY2016

| NYSE ARCA Airline | | $ | 100 | | | $ | 138 | | | $ | 218 | | | $ | 327 | | | $ | 277 | | | $ | 356 | |

Dropped from FY2016

| | | | | | | | | | | | | | | | | |

Dropped from FY2016

| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

Dropped from FY2016

| | | (a) | | | (b) | | | | | (c) | | | (d) | | | |

Dropped from FY2016

| October 1, 2016 through October 31, 2016 | | 1,709,877 | | | $ | — | | (2 | ) | 1,709,877 | | | $ | 1,250,000,000 | | |

Dropped from FY2016

| November 1, 2016 through November 30, 2016 | | — | | | $ | — | | (3 | ) | — | | | $ | 950,000,000 | | |

Dropped from FY2016

| December 1, 2016 through December 31, 2016 | | 4,723,420 | | | $ | — | | (3 | ) | 4,723,420 | | | $ | 950,000,000 | | |

Dropped from FY2016

| Total | | 6,433,297 | | | | | | | | 6,433,297 | | | | | | |

Item 6. Selected Financial Data

47 rewritten, 0 added, 3 removed, 28 unchanged

Rewritten

The following financial information, for the five years ended December 31, [removed: 2016,] [added: 2017,] has been derived from the Company’s Consolidated Financial Statements.

Rewritten

| | | [removed: 2016] [added: 2017] | | | | [removed: 2015] [added: 2016] | | | | [removed: 2014] [added: 2015] | | | | [removed: 2013] [added: 2014] | | | | [removed: 2012] [added: 2013] | | |

Rewritten

| Operating revenues | | $ | [removed: 20,425] [added: 21,171] | | | $ | [removed: 19,820] [added: 20,425] | | | $ | [removed: 18,605] [added: 19,820] | | | $ | [removed: 17,699] [added: 18,605] | | | $ | [removed: 17,088] [added: 17,699] | |

Rewritten

| Operating expenses | | [removed: 16,665] [added: 17,656] | | | | [removed: 15,704] [added: 16,665] | | | | [removed: 16,380] [added: 15,704] | | | | [removed: 16,421] [added: 16,380] | | | | [removed: 16,465] [added: 16,421] | | |

Rewritten

| Operating income | | [removed: 3,760] [added: 3,515] | | | | [removed: 4,116] [added: 3,760] | | | | [removed: 2,225] [added: 4,116] | | | | [removed: 1,278] [added: 2,225] | | | | [removed: 623] [added: 1,278] | | |

Rewritten

| Other expenses (income) net | | [removed: 213] [added: 264] | | | | [removed: 637] [added: 213] | | | | [removed: 409] [added: 637] | | | | [removed: 69] [added: 409] | | | | [removed: (62] [added: 69] | | [removed: )] |

Rewritten

| Income before taxes | | [removed: 3,547] [added: 3,251] | | | | [removed: 3,479] [added: 3,547] | | | | [removed: 1,816] [added: 3,479] | | | | [removed: 1,209] [added: 1,816] | | | | [removed: 685] [added: 1,209] | | |

Rewritten

| Provision for income taxes | | [removed: 1,303] [added: (237] | | [added: )] | | [removed: 1,298] [added: 1,303] | | | | [removed: 680] [added: 1,298] | | | | [removed: 455] [added: 680] | | | | [removed: 264] [added: 455] | | |

Rewritten

| Net income | | $ | [removed: 2,244] [added: 3,488] | | | $ | [removed: 2,181] [added: 2,244] | | | $ | [removed: 1,136] [added: 2,181] | | | $ | [removed: 754] [added: 1,136] | | | $ | [removed: 421] [added: 754] | |

Rewritten

| Net income per share, basic | | $ | [removed: 3.58] [added: 5.80] | | | $ | [removed: 3.30] [added: 3.58] | | | $ | [removed: 1.65] [added: 3.30] | | | $ | [removed: 1.06] [added: 1.65] | | | $ | [removed: 0.56] [added: 1.06] | |

Rewritten

| Net income per share, diluted | | $ | [removed: 3.55] [added: 5.79] | | | $ | [removed: 3.27] [added: 3.55] | | | $ | [removed: 1.64] [added: 3.27] | | | $ | [removed: 1.05] [added: 1.64] | | | $ | [removed: 0.56] [added: 1.05] | |

Rewritten

| Cash dividends per common share | | $ | [removed: 0.3750] [added: 0.4750] | | | $ | [removed: 0.2850] [added: 0.3750] | | | $ | [removed: 0.2200] [added: 0.2850] | | | $ | [removed: 0.1300] [added: 0.2200] | | | $ | [removed: 0.0345] [added: 0.1300] | |

Rewritten

| Total assets at period-end [removed: (1)] | | $ | [removed: 23,286] [added: 25,110] | | | $ | [removed: 21,312] [added: 23,286] | | | $ | [removed: 19,723] [added: 21,312] | | | $ | [removed: 19,177] [added: 19,723] | | | $ | [removed: 18,350] [added: 19,177] | |

Rewritten

| Long-term obligations at period-end | | $ | [removed: 2,821] [added: 3,320] | | | $ | [removed: 2,541] [added: 2,821] | | | $ | [removed: 2,434] [added: 2,541] | | | $ | [removed: 2,191] [added: 2,434] | | | $ | [removed: 2,883] [added: 2,191] | |

Rewritten

| Stockholders’ equity at period-end | | $ | [removed: 8,441] [added: 10,430] | | | $ | [removed: 7,358] [added: 8,441] | | | $ | [removed: 6,775] [added: 7,358] | | | $ | [removed: 7,336] [added: 6,775] | | | $ | [removed: 6,992] [added: 7,336] | |

Rewritten

| Revenue passengers carried | | [removed: 124,719,765] [added: 130,256,190] | | | | [removed: 118,171,211] [added: 124,719,765] | | | | [removed: 110,496,912] [added: 118,171,211] | | | | [removed: 108,075,976] [added: 110,496,912] | | | | [removed: 109,346,509] [added: 108,075,976] | | |

Rewritten

| Enplaned passengers | | [removed: 151,740,357] [added: 157,677,218] | | | | [removed: 144,574,882] [added: 151,740,357] | | | | [removed: 135,767,188] [added: 144,574,882] | | | | [removed: 133,155,030] [added: 135,767,188] | | | | [removed: 133,978,100] [added: 133,155,030] | | |

Rewritten

| Revenue passenger miles (RPMs) (000s) [removed: (2)] [added: (a)] | | [removed: 124,797,986] [added: 129,041,420] | | | | [removed: 117,499,879] [added: 124,797,986] | | | | [removed: 108,035,133] [added: 117,499,879] | | | | [removed: 104,348,216] [added: 108,035,133] | | | | [removed: 102,874,979] [added: 104,348,216] | | |

Rewritten

| Available seat miles (ASMs) (000s) [removed: (3)] [added: (b)] | | [removed: 148,522,051] [added: 153,811,072] | | | | [removed: 140,501,409] [added: 148,522,051] | | | | [removed: 131,003,957] [added: 140,501,409] | | | | [removed: 130,344,072] [added: 131,003,957] | | | | [removed: 128,137,110] [added: 130,344,072] | | |

Rewritten

| Load factor [removed: (4)] [added: (c)] | | [removed: 84.0] [added: 83.9] | | % | | [removed: 83.6] [added: 84.0] | | % | | [removed: 82.5] [added: 83.6] | | % | | [removed: 80.1] [added: 82.5] | | % | | [removed: 80.3] [added: 80.1] | | % |

Rewritten

| Average length of passenger haul (miles) | | [removed: 1,001] [added: 991] | | | | [removed: 994] [added: 1,001] | | | | [removed: 978] [added: 994] | | | | [removed: 966] [added: 978] | | | | [removed: 941] [added: 966] | | |

Rewritten

| Average aircraft stage length (miles) | | [removed: 760] [added: 754] | | | | [removed: 750] [added: 760] | | | | [removed: 721] [added: 750] | | | | [removed: 703] [added: 721] | | | | [removed: 693] [added: 703] | | |

Rewritten

| Trips flown | | [removed: 1,311,149] [added: 1,347,893] | | | | [removed: 1,267,358] [added: 1,311,149] | | | | [removed: 1,255,502] [added: 1,267,358] | | | | [removed: 1,312,785] [added: 1,255,502] | | | | [removed: 1,361,558] [added: 1,312,785] | | |

Rewritten

| Seats flown [removed: (5)] [added: (d)] | | [removed: 193,167,695] [added: 200,878,967] | | | | [removed: 184,955,094] [added: 193,167,695] | | | | [removed: 179,733,055] [added: 184,955,094] | | | | [removed: 183,563,527] [added: 179,733,055] | | | | [removed: 184,208,891] [added: 183,563,527] | | |

Rewritten

| Seats per trip [removed: (6)] [added: (e)] | | [removed: 147.33] [added: 149.03] | | | | [removed: 145.94] [added: 147.33] | | | | [removed: 143.16] [added: 145.94] | | | | [removed: 139.83] [added: 143.16] | | | | [removed: 135.92] [added: 139.83] | | |

Rewritten

| Average passenger fare [removed: (11)] [added: (j)] | | $ | [removed: 149.09] [added: 146.95] | | | $ | [removed: 154.85] [added: 149.09] | | | $ | [removed: 159.80] [added: 154.85] | | | $ | [removed: 154.72] [added: 159.80] | | | $ | [removed: 147.17] [added: 154.72] | |

Rewritten

| Passenger revenue yield per RPM (cents) [removed: (7)(11)] [added: (f)(j)] | | [removed: 14.90] [added: 14.83] | | | | [removed: 15.57] [added: 14.90] | | | | [removed: 16.34] [added: 15.57] | | | | [removed: 16.02] [added: 16.34] | | | | [removed: 15.64] [added: 16.02] | | |

Rewritten

| Operating revenue per ASM (cents) [removed: (8)] [added: (g)] | | [removed: 13.75] [added: 13.76] | | | | [removed: 13.98] [added: 13.75] | | | | [removed: 14.20] [added: 13.98] | | | | [removed: 13.58] [added: 14.20] | | | | [removed: 13.34] [added: 13.58] | | |

Rewritten

| Passenger revenue per ASM (cents) [removed: (9)(11)] [added: (h)(j)] | | [removed: 12.52] [added: 12.44] | | | | [removed: 13.02] [added: 12.52] | | | | [removed: 13.48] [added: 13.02] | | | | [removed: 12.83] [added: 13.48] | | | | [removed: 12.56] [added: 12.83] | | |

Rewritten

| Operating expenses per ASM (cents) [removed: (10)] [added: (i)] | | [removed: 11.22] [added: 11.48] | | | | [removed: 11.18] [added: 11.22] | | | | [removed: 12.50] [added: 11.18] | | | | [removed: 12.60] [added: 12.50] | | | | [removed: 12.85] [added: 12.60] | | |

Rewritten

| Operating expenses per ASM, excluding fuel (cents) | | [removed: 8.76] [added: 8.92] | | | | [removed: 8.60] [added: 8.76] | | | | [removed: 8.46] [added: 8.60] | | | | [removed: 8.18] [added: 8.46] | | | | [removed: 8.07] [added: 8.18] | | |

Rewritten

| Operating expenses per ASM, excluding fuel and profitsharing (cents) | | [removed: 8.37] [added: 8.56] | | | | [removed: 8.16] [added: 8.37] | | | | [removed: 8.19] [added: 8.16] | | | | [removed: 8.01] [added: 8.19] | | | | [removed: 7.98] [added: 8.01] | | |

Rewritten

| Fuel costs per gallon, including fuel tax | | $ | [removed: 1.82] [added: 1.92] | | | $ | [removed: 1.90] [added: 1.82] | | | $ | [removed: 2.93] [added: 1.90] | | | $ | [removed: 3.16] [added: 2.93] | | | $ | [removed: 3.30] [added: 3.16] | |

Rewritten

| Fuel costs per gallon, including fuel tax, economic | | $ | [removed: 1.92] [added: 2.00] | | | $ | [removed: 2.07] [added: 1.92] | | | $ | [removed: 2.92] [added: 2.07] | | | $ | [removed: 3.12] [added: 2.92] | | | $ | [removed: 3.28] [added: 3.12] | |

Rewritten

| Fuel consumed, in gallons (millions) | | [removed: 1,996] [added: 2,045] | | | | [removed: 1,901] [added: 1,996] | | | | [removed: 1,801] [added: 1,901] | | | | [removed: 1,818] [added: 1,801] | | | | [removed: 1,847] [added: 1,818] | | |

Rewritten

| Active fulltime equivalent Employees | | [removed: 53,536] [added: 56,110] | | | | [removed: 49,583] [added: 53,536] | | | | [removed: 46,278] [added: 49,583] | | | | [removed: 44,381] [added: 46,278] | | | | [removed: 45,861] [added: 44,381] | | |

Rewritten

| Aircraft at end of period | | [removed: 723] [added: 706] | | | | [removed: 704] [added: 723] | | | | [removed: 665] [added: 704] | | | | [removed: 681] [added: 665] | | | | [removed: 694] [added: 681] | | |

Rewritten

| [removed: (2)] [added: (a)] | A revenue passenger mile is one paying passenger flown one mile. Also referred to as [removed: “traffic,”] [added: "traffic,"] which is a measure of demand for a given period. |

Rewritten

| [removed: (3)] [added: (b)] | An available seat mile is one seat (empty or full) flown one mile. Also referred to as [removed: “capacity,”] [added: "capacity,"] which is a measure of the space available to carry passengers in a given period. |

Rewritten

| [removed: (4)] [added: (c)] | Revenue passenger miles divided by available seat miles. |

Dropped from FY2016

| | |

Dropped from FY2016

| --- | --- |

Dropped from FY2016

| (1) | Historical amounts have been restated to align with current presentation. |

An excerpt. Shown here: 40 of 47 rewritten, all 0 added and all 3 removed. The counts are complete. For every sentence, read Item 6. Selected Financial Data in the FY2017 filing and the FY2016 filing.

Item 8. Financial Statements and Supplementary Data

532 rewritten, 188 added, 175 removed, 684 unchanged

Rewritten

| | December 31, [removed: 2016] [added: 2017] | | | | December 31, [removed: 2015] [added: 2016] | | |

Rewritten

| Cash and cash equivalents | $ | [removed: 1,680] [added: 1,495] | | | $ | [removed: 1,583] [added: 1,680] | |

Rewritten

| Short-term investments | [removed: 1,625] [added: 1,778] | | | | [removed: 1,468] [added: 1,625] | | |

Rewritten

| Accounts and other receivables | [removed: 546] [added: 662] | | | | [removed: 474] [added: 546] | | |

Rewritten

| Inventories of parts and supplies, at cost | [removed: 337] [added: 420] | | | | [removed: 311] [added: 337] | | |

Rewritten

| Prepaid expenses and other current assets | [removed: 310] [added: 460] | | | | [removed: 188] [added: 310] | | |

Rewritten

| Total current assets | [removed: 4,498] [added: 4,815] | | | | [removed: 4,024] [added: 4,498] | | |

Rewritten

| Flight equipment | [removed: 20,275] [added: 21,368] | | | | [removed: 19,462] [added: 20,275] | | |

Rewritten

| Ground property and equipment | [removed: 3,779] [added: 4,399] | | | | [removed: 3,219] [added: 3,779] | | |

Rewritten

| Deposits on flight equipment purchase contracts | [removed: 1,190] [added: 919] | | | | [removed: 1,089] [added: 1,190] | | |

Rewritten

| Assets constructed for others | [removed: 1,220] [added: 1,543] | | | | [removed: 915] [added: 1,220] | | |

Rewritten

| Less allowance for depreciation and amortization | [removed: 9,420] [added: 9,690] | | | | [removed: 9,084] [added: 9,420] | | |

Rewritten

| Other assets | [removed: 774] [added: 786] | | | | [removed: 717] [added: 774] | | |

Rewritten

| Accounts payable | $ | [removed: 1,178] [added: 1,320] | | | $ | [removed: 1,188] [added: 1,178] | |

Rewritten

| Accrued liabilities | [removed: 1,985] [added: 1,777] | | | | [removed: 2,591] [added: 1,985] | | |

Rewritten

| Air traffic liability | [removed: 3,115] [added: 3,460] | | | | [removed: 2,990] [added: 3,115] | | |

Rewritten

| Current maturities of long-term debt | [removed: 566] [added: 348] | | | | [removed: 637] [added: 566] | | |

Rewritten

| Total current liabilities | [removed: 6,844] [added: 6,905] | | | | [removed: 7,406] [added: 6,844] | | |

Rewritten

| Long-term debt less current maturities | [removed: 2,821] [added: 3,320] | | | | [removed: 2,541] [added: 2,821] | | |

Rewritten

| Deferred income taxes | [removed: 3,374] [added: 2,358] | | | | [removed: 2,490] [added: 3,374] | | |

Rewritten

| Construction obligation | [removed: 1,078] [added: 1,390] | | | | [removed: 757] [added: 1,078] | | |

Rewritten

| Other noncurrent liabilities | [removed: 728] [added: 707] | | | | [removed: 760] [added: 728] | | |

Rewritten

| Common stock, $1.00 par value: 2,000,000,000 shares authorized; 807,611,634 shares issued in [removed: 2016] [added: 2017] and [removed: 2015] [added: 2016] | 808 | | | | 808 | | |

Rewritten

| Capital in excess of par value | [removed: 1,410] [added: 1,451] | | | | [removed: 1,374] [added: 1,410] | | |

Rewritten

| Retained earnings | [removed: 11,418] [added: 14,621] | | | | [removed: 9,409] [added: 11,418] | | |

Rewritten

| Accumulated other comprehensive [removed: loss] [added: income (loss)] | [removed: (323] [added: 12] | | [removed: )] | | [removed: (1,051] [added: (323] | | ) |

Rewritten

| Treasury stock, at cost: [removed: 192,450,855] [added: 219,060,856] and [removed: 160,010,017] [added: 192,450,855] shares in [removed: 2016] [added: 2017] and [removed: 2015] [added: 2016] respectively | [removed: (4,872] [added: (6,462] | | ) | | [removed: (3,182] [added: (4,872] | | ) |

Rewritten

| Total stockholders' equity | [removed: 8,441] [added: 10,430] | | | | [removed: 7,358] [added: 8,441] | | |

Rewritten

| | [removed: 2016] [added: 2017] | | | | [removed: 2015] [added: 2016] | | | | [removed: 2014] [added: 2015] | | |

Rewritten

| Passenger | $ | [removed: 18,594] [added: 19,141] | | | $ | [removed: 18,299] [added: 18,594] | | | $ | [removed: 17,658] [added: 18,299] | |

Rewritten

| Freight | [removed: 171] [added: 173] | | | | [removed: 179] [added: 171] | | | | [removed: 175] [added: 179] | | |

Rewritten

| Special revenue adjustment | — | | | | [removed: 172] [added: —] | | | | [removed: —] [added: 172] | | |

Rewritten

| Other | [removed: 1,660] [added: 1,857] | | | | [removed: 1,170] [added: 1,660] | | | | [removed: 772] [added: 1,170] | | |

Rewritten

| Total operating revenues | [removed: 20,425] [added: 21,171] | | | | [removed: 19,820] [added: 20,425] | | | | [removed: 18,605] [added: 19,820] | | |

Rewritten

| Salaries, wages, and benefits | [removed: 6,798] [added: 7,319] | | | | [removed: 6,383] [added: 6,798] | | | | [removed: 5,434] [added: 6,383] | | |

Rewritten

| Fuel and oil | [removed: 3,647] [added: 3,940] | | | | [removed: 3,616] [added: 3,647] | | | | [removed: 5,293] [added: 3,616] | | |

Rewritten

| Maintenance materials and repairs | [removed: 1,045] [added: 1,001] | | | | [removed: 1,005] [added: 1,045] | | | | [removed: 978] [added: 1,005] | | |

Rewritten

| Aircraft rentals | [removed: 229] [added: 198] | | | | [removed: 238] [added: 229] | | | | [removed: 295] [added: 238] | | |

Rewritten

| Landing fees and other rentals | [removed: 1,211] [added: 1,292] | | | | [removed: 1,166] [added: 1,211] | | | | [removed: 1,111] [added: 1,166] | | |

Rewritten

| Depreciation and amortization | [removed: 1,221] [added: 1,218] | | | | [removed: 1,015] [added: 1,221] | | | | [removed: 938] [added: 1,015] | | |

New in FY2017

| | 28,229 | | | | 26,464 | | |

New in FY2017

| | 18,539 | | | | 17,044 | | |

New in FY2017

| | $ | 25,110 | | | $ | 23,286 | |

New in FY2017

| | $ | 25,110 | | | $ | 23,286 | |

New in FY2017

| Comprehensive income | | — | | | | — | | | | 3,488 | | | | 335 | | | | — | | | | 3,823 | | |

New in FY2017

| Balance at December 31, 2017 | | $ | 808 | | | $ | 1,451 | | | $ | 14,621 | | | $ | 12 | | | $ | (6,462 | ) | | $ | 10,430 | |

New in FY2017

| Depreciation and amortization | 1,218 | | | | 1,221 | | | | 1,015 | | |

New in FY2017

| Aircraft grounding charge | 63 | | | | — | | | | — | | |

New in FY2017

In September 2017, the Company retired the remaining 61 Classic aircraft as part of this accelerated retirement schedule.

New in FY2017

operating or cash flow losses associated with the use of the long-lived asset.

New in FY2017

This impairment loss was reflected in Other Operating Expenses within the accompanying Consolidated Statement of Income.

New in FY2017

The Company does not believe this FAA decision is indicative of a similar decision being made at the Company's other slot-controlled airports, Washington Reagan and New York LaGuardia.

New in FY2017

| | | | | | | | | | | | | | | | | | |

New in FY2017

| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

New in FY2017

| | | | | | | | | | | | | | | | | | |

New in FY2017

| Total | 14 | | $ | 502 | | | $ | 89 | | | $ | 513 | | | $ | 87 | |

New in FY2017

The Company's definite lived assets are amortized on a straight-line basis over the useful life of the asset.

New in FY2017

use of the Southwest Airlines’ brand and access to Rapid Reward Member lists; advertising elements; and the Company’s resource team).

New in FY2017

floating-rate debt to a fixed-rate.

New in FY2017

Income.

New in FY2017

The standard amends the hedge accounting model to enable entities to better portray the economics of their risk management activities in the financial statements and enhance the transparency and understandability of hedge results.

New in FY2017

The amendments also simplify the application of hedge accounting in certain situations.

New in FY2017

The Company plans to adopt this ASU as of January 1, 2018.

New in FY2017

See Note 10 for further information on current accounting for financial derivative instruments.

New in FY2017

The most significant impacts of this ASU on the Company's financial statements is the elimination of the requirement to separately measure and report ineffectiveness for all cash flow hedges in a hedging relationship, as well as a change in classification of premium expense associated with option contracts.

New in FY2017

The estimate of the cumulative effect of the adjustment to move the reporting of ineffectiveness as of January 1, 2018, to Accumulated other comprehensive income (loss) from Retained earnings, is an approximate $20 million loss, net of taxes.

New in FY2017

Historically

New in FY2017

amounts that are paid or received in connection with the purchase or sale of financial derivative instruments (i.e., premium costs of option contracts) have been classified as a component of Other (gains) losses, net, in the Consolidated Statement of Income in the period in which the instrument settles or expires.

New in FY2017

Under the new ASU, such amounts are reflected as a component of the line item to which the hedge relates, which in the case of the Company’s jet fuel hedges is Fuel and oil expense.

New in FY2017

This ASU requires prospective adoption.

New in FY2017

However, as previous hedge accounting rules did not specify the classification of such premium expense, and such provision only consists of a reclassification of expense between income statement line items, the Company will retrospectively apply this reclassification to prior period financial statements in 2018 in order to enhance comparability.

New in FY2017

For the Company's full year 2017 and 2016 results, the amounts to be reclassified in 2018 are $135 million and $153 million, respectively.

New in FY2017

On March 10, 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.

New in FY2017

The standard requires employers to present the service cost component of the net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period.

New in FY2017

The other components of net benefit cost, including amortization of prior service cost/credit, and settlement and curtailment effects, are to be included in nonoperating expenses.

New in FY2017

The Company thus will reclassify $14 million and $12 million of Salaries, wages, and benefits expense to Other (gains) and losses within the Consolidated Statement of Income for years ended 2017 and 2016, respectively.

New in FY2017

The Company will adopt this guidance as of January 1, 2018.

New in FY2017

On January 26, 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment.

New in FY2017

The standard simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test (as defined by the FASB), which requires a hypothetical purchase price allocation (implied fair value of goodwill) to measure impairment loss.

New in FY2017

The guidance requires lessees to recognize a right-of-use asset and a lease liability on the balance sheet for all leases (with the exception of short-term leases) at the lease commencement date and recognize expenses on the income statement in a similar manner to the current guidance in Accounting Standards Codification 840, Leases.

Dropped from FY2016

Southwest Airlines Co.

Dropped from FY2016

| | | | | | | | |

Dropped from FY2016

| --- | --- | --- | --- | --- | --- | --- | --- |

Dropped from FY2016

| | 26,464 | | | | 24,685 | | |

Dropped from FY2016

| | 17,044 | | | | 15,601 | | |

Dropped from FY2016

| | $ | 23,286 | | | $ | 21,312 | |

Dropped from FY2016

| Balance at December 31, 2013 | | $ | 808 | | | $ | 1,231 | | | $ | 6,431 | | | $ | (3 | ) | | (1,131 | | ) | | $ | 7,336 | |

Dropped from FY2016

| Net tax benefit (expense) of options exercised | | — | | | | 23 | | | | — | | | | — | | | | — | | | | 23 | | |

Dropped from FY2016

| Comprehensive income | | — | | | | — | | | | 1,136 | | | | (735 | | ) | | — | | | | 401 | | |

Dropped from FY2016

The Company owns all of the outstanding equity of AirTran Holdings, Inc. (“AirTran Holdings”), the former parent company of AirTran Airways, Inc. (“AirTran Airways”).

Dropped from FY2016

Throughout these Notes, the Company makes reference to AirTran, which is meant to be inclusive of AirTran Holdings, LLC, the successor to AirTran Holdings, and its subsidiaries, including among others, AirTran Airways.

Dropped from FY2016

AirTran's final passenger service was on December 28, 2014.

Dropped from FY2016

All integration costs were incurred in periods prior to 2016.

Dropped from FY2016

The impacts on expense and earnings from this change in assumption for the year ended December 31, 2016 are as follows:

Dropped from FY2016

| | | | |

Dropped from FY2016

| --- | --- | --- | --- |

Dropped from FY2016

The estimated impact to Depreciation and amortization expense from this change in assumption for 2017 is an approximate increase of $21 million.

Dropped from FY2016

| | | | | | | | | | | | | | | | | | | |

Dropped from FY2016

| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

Dropped from FY2016

| Trademarks/trade names | 6 | | | 36 | | | | 36 | | | | 36 | | | | 34 | | |

Dropped from FY2016

| Leased domestic slots (a) | — | | | — | | | | — | | | | 17 | | | | 3 | | |

Dropped from FY2016

| Total | 13 | | | $ | 549 | | | $ | 123 | | | $ | 574 | | | $ | 110 | |

Dropped from FY2016

The Company estimates the amount of tickets that expire unused and recognizes such amounts in Passenger revenue using the redemption method based on the scheduled flight date.

Dropped from FY2016

During fourth quarter 2014, the Company obtained sufficient historical behavioral data to develop a predictive statistical model to analyze the amount of spoilage expected for points sold to business partners, which indicated an increase in the expected spoilage rate.

Dropped from FY2016

This change in estimate was recorded on a prospective basis, as of October 1, 2014.

Dropped from FY2016

| (in millions, except per share amounts) | | Year ended December 31, 2015 | | | Year ended December 31, 2014 | | |

Dropped from FY2016

| Passenger revenue | | $ | 115 | | $ | 55 | |

Dropped from FY2016

See "Basis of Presentation" for further information on current presentation of deferred income taxes.

Dropped from FY2016

The standard is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows.

Dropped from FY2016

On June 16, 2016, the FASB issued ASU No. 2016-13, Accounting for Credit Losses.

Dropped from FY2016

The new standard requires the use of an “expected loss” model on certain types of financial instruments.

Dropped from FY2016

The standard also amends the impairment model for available-for-sale debt securities and requires estimated credit losses to be recorded as allowances instead of reductions to amortized cost of the securities.

Dropped from FY2016

On March 30, 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting.

Dropped from FY2016

The standard is part of the FASB effort to simplify various aspects related to how share-based payments are accounted for and presented in the financial statements.

Dropped from FY2016

Early adoption is permitted in any interim or annual period, with any adjustments reflected as of the beginning of the fiscal year of adoption.

Dropped from FY2016

The Company early adopted this standard during the three months ended June 30, 2016, with an effective date as of January 1, 2016.

Dropped from FY2016

The prospective method of adoption of this standard resulted in the recognition of $7 million of excess tax benefits to the Company's income tax provision for the year ended December 31, 2016.

Dropped from FY2016

The Company believes the most significant impact of this ASU on its accounting will be the presentation of operating leases with durations greater than twelve months, with certain exceptions, on the balance sheet.

Dropped from FY2016

A portion of the Company's aircraft fleet is on operating lease, and it has contractual lease agreements associated with the majority of space from which it operates at the airports it serves.

Dropped from FY2016

See Note 7 for more information on the Company's lease arrangements.

An excerpt. Shown here: 40 of 532 rewritten, 40 of 188 added and 40 of 175 removed. The counts are complete. For every sentence, read Item 8. Financial Statements and Supplementary Data in the FY2017 filing and the FY2016 filing.

Item 9A. Controls and Procedures

5 rewritten, 0 added, 0 removed, 11 unchanged

Rewritten

Management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the Company’s disclosure controls and procedures as of December 31, [removed: 2016.][added: 2017.]

Rewritten

Based on this evaluation, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures were effective as of December 31, [removed: 2016,] [added: 2017,] at the reasonable assurance level.

Rewritten

Management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the Company’s internal control over financial reporting as of December 31, [removed: 2016.][added: 2017.]

Rewritten

Based on this evaluation, management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, concluded that, as of December 31, [removed: 2016,] [added: 2017,] the Company’s internal control over financial reporting was effective.

Rewritten

There were no changes in the Company’s internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act) during the quarter ended December 31, [removed: 2016,] [added: 2017,] that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Item 10. Directors, Executive Officers, and Corporate Governance

3 rewritten, 0 added, 0 removed, 8 unchanged

Rewritten

The information required by this Item 10 regarding the Company’s directors will be set forth under the heading “Proposal 1 [removed: —] [added: -] Election of Directors” in the Proxy Statement for the Company’s [removed: 2017] [added: 2018] Annual Meeting of Shareholders and is incorporated herein by reference.

Rewritten

The information required by this Item 10 regarding compliance with Section 16(a) of the Exchange Act will be set forth under the heading “Section 16(a) Beneficial Ownership Reporting Compliance” in the Proxy Statement for the Company’s [removed: 2017] [added: 2018] Annual Meeting of Shareholders and is incorporated herein by reference.

Rewritten

Except as set forth in the following paragraph, the remaining information required by this Item 10 will be set forth under the heading “Corporate Governance” in the Proxy Statement for the Company’s [removed: 2017] [added: 2018] Annual Meeting of Shareholders and is incorporated herein by reference.

Item 11. Executive Compensation

1 rewritten, 0 added, 0 removed, 0 unchanged

Rewritten

The information required by this Item 11 will be set forth under the headings “Compensation of Executive Officers” and “Compensation of Directors” in the Proxy Statement for the Company’s [removed: 2017] [added: 2018] Annual Meeting of Shareholders and is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

6 rewritten, 1 added, 1 removed, 15 unchanged

Rewritten

Except as set forth below regarding securities authorized for issuance under equity compensation plans, the information required by this Item 12 will be set forth under the heading “Voting Securities and Principal Shareholders” in the Proxy Statement for the Company’s [removed: 2017] [added: 2018] Annual Meeting of Shareholders and is incorporated herein by reference.

Rewritten

The following table provides information as of December 31, [removed: 2016,] [added: 2017,] regarding compensation plans (including individual compensation arrangements) under which equity securities of the Company are authorized for issuance.

Rewritten

| Equity Compensation Plans [added: not] Approved by Security Holders | | [removed: 1,748,323] [added: 2,100] | | [removed: (1] | [removed: )] | | $ | [removed: 9.02] [added: 9.43] | | [removed: (2] | [removed: )] | | [removed: 31,456,389] [added: —] | | [removed: (3] | [removed: )] |

Rewritten

| Equity Compensation Plans [removed: not] Approved by Security Holders | | [removed: 4,300] [added: 1,406,539] | | [added: (1] | [added: )] | | $ | [removed: 10.10] [added: 9.43] | | [added: (2] | [added: )] | | [removed: —] [added: 30,454,580] | | [added: (3] | [added: )] |

Rewritten

| (1) | Includes [removed: 308,913] [added: 112,285] shares of common stock issuable upon exercise of outstanding stock options and [removed: 1,439,410] [added: 1,294,254] restricted share units settleable in shares of the Company’s common stock. |

Rewritten

| (3) | Of these shares, (i) [removed: 9,373,779] [added: 8,830,202] shares remained available for issuance under the Company’s tax-qualified employee stock purchase plan; and (ii) [removed: 22,082,610] [added: 21,624,378] shares remained available for issuance under the Company’s 2007 Equity Incentive Plan in connection with the exercise of stock options and stock appreciation rights, the settlement of awards of restricted stock, restricted stock units, and phantom shares, and the grant of unrestricted shares of common stock; however, no more than [removed: 1,237,899] [added: 1,211,599] shares remain available for grant in connection with awards of unrestricted shares of common stock, stock-settled phantom shares, and awards to non-Employee members of the Board. These shares are in addition to the shares reserved for issuance pursuant to outstanding awards included in column (a). |

New in FY2017

| Total | | 1,408,639 | | | | | $ | 9.43 | | (2 | ) | | 30,454,580 | | | |

Dropped from FY2016

| Total | | 1,752,623 | | | | | $ | 9.02 | | (2 | ) | | 31,456,389 | | | |

Item 13. Certain Relationships and Related Transactions, and Director Independence

1 rewritten, 0 added, 0 removed, 0 unchanged

Rewritten

The information required by this Item 13 will be set forth under the heading “Certain Relationships and Related Transactions, and Director Independence” in the Proxy Statement for the Company’s [removed: 2017] [added: 2018] Annual Meeting of Shareholders and is incorporated herein by reference.

Item 14. Principal Accounting Fees and Services

1 rewritten, 0 added, 0 removed, 1 unchanged

Rewritten

The information required by this Item 14 will be set forth under the heading “Relationship with Independent Auditors” in the Proxy Statement for the Company’s [removed: 2017] [added: 2018] Annual Meeting of Shareholders and is incorporated herein by reference.

Item 15. Exhibits and Financial Statement Schedules

30 rewritten, 5 added, 60 removed, 85 unchanged

Rewritten

| 3.1 | | [removed: Restated] [added: [Restated] Certificate of Formation of the Company, effective May 18, 2012 (incorporated by reference to Exhibit 3.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238012000089/ex3_1.htm)] |

Rewritten

| 3.2 | | [removed: Second] [added: [Second] Amended and Restated Bylaws of the Company, effective November 17, 2016 (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed November 21, 2016 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312516773178/d282581dex31.htm)] |

Rewritten

| 4.1 | | [removed: Specimen] [added: [Specimen] certificate representing common stock of the Company (incorporated by reference to Exhibit 4.2 to the Company’s Annual Report on Form 10-K for the year ended December 31, 1994 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/0000930661-95-000050.txt)] |

Rewritten

| 4.2 | | [removed: Indenture] [added: [Indenture] dated as of February 14, 2005, between the Company and The Bank of New York Trust Company, N.A., Trustee (incorporated by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed February 14, 2005 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000129993305000651/exhibit3.htm)] |

Rewritten

| 4.3 | | [removed: Indenture] [added: [Indenture] dated as of September 17, 2004, between the Company and Wells Fargo Bank, N.A., Trustee (incorporated by reference to Exhibit 4.1 to the Company’s Registration Statement on Form S-3 filed October 30, 2002 (File No. [removed: 333-100861)).] [added: 333-100861)).](http://www.sec.gov/Archives/edgar/data/92380/000095013402013127/d00530exv4w1.txt)] |

Rewritten

| 4.4 | | [removed: Indenture] [added: [Indenture] dated as of February 25, 1997, between the Company and U.S. Trust Company of Texas, N.A. (incorporated by reference to Exhibit 4.12 to the Company’s Annual Report on Form 10-K for the year ended December 31, 1996 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/0000950134-97-002019.txt)] |

Rewritten

| 10.1 | | Purchase Agreement No. 1810, dated January 19, 1994, between The Boeing Company and the Company (incorporated by reference to Exhibit 10.4 to the Company’s Annual Report on Form 10-K for the year ended December 31, 1993 (File No. 1-7259)); [removed: Supplemental] [added: [Supplemental] Agreement No. 1 (incorporated by reference to Exhibit 10.3 to the Company’s Annual Report on Form 10-K for the year ended December 31, 1996 (File No. [removed: 1-7259)); Supplemental] [added: 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/0000092380-97-000010.txt); [Supplemental] Agreements Nos. 2, 3, and 4 (incorporated by reference to Exhibit 10.2 to the Company’s Annual Report on Form 10-K for the year ended December 31, 1997 (File No. [removed: 1-7259)); Supplemental] [added: 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/0000950134-98-002150.txt); [Supplemental] Agreements Nos. 5, 6, and 7 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 1998 (File No. [removed: 1-7259)); Supplemental] [added: 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/0000950134-99-002046.txt); [Supplemental] Agreements Nos. 8, 9, and 10 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended [added: December 31, 1999 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000095013400002530/0000950134-00-002530.txt);] |

Rewritten

| 10.2 | | [removed: Form] [added: [Form] of Amended and Restated Executive Service Recognition Plan Executive Employment Agreement between the Company and certain Officers of the Company (incorporated by reference to Exhibit 10.2 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2008 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312509015591/dex102.htm)] (2) |

Rewritten

| 10.3 | | [removed: Letter] [added: [Letter] Agreement between Southwest Airlines Co. and Gary C. Kelly, effective as of February 1, 2011 (incorporated by reference to Exhibit 99.1 to the Company’s Current Report on Form 8-K filed February 1, 2011 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312511019263/dex991.htm)] (2) |

Rewritten

| 10.4 | | [removed: Southwest] [added: [Southwest] Airlines Co. Amended and Restated Severance Plan for Directors (as amended and restated effective May 19, 2009) (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2009 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238009000027/ex10_1.htm)] |

Rewritten

| 10.5 | | [removed: Southwest] [added: [Southwest] Airlines Co. Outside Director Incentive Plan (as amended and restated effective May 16, 2007) (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2007 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238007000024/ex10_2.htm)] |

Rewritten

| 10.6 | | [removed: Southwest] [added: [Southwest] Airlines Co. 2002 SWAPIA Non-Qualified Stock Option Plan (incorporated by reference to Exhibit 4.1 to the Company’s Registration Statement on Form S-8 filed October 30, 2002 (File No. [removed: 333-100862)).] [added: 333-100862)).](http://www.sec.gov/Archives/edgar/data/92380/000095013402013128/d00561exv4w1.txt)] |

Rewritten

| 10.7 | | [removed: Southwest] [added: [Southwest] Airlines Co. Amended and Restated 2007 Equity Incentive Plan (incorporated by reference to Exhibit 99.1 to the Company’s Current Report on Form 8-K filed May 18, 2015(File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312515191553/d927261dex991.htm)] (2) |

Rewritten

| 10.8 | | [removed: Southwest] [added: [Southwest] Airlines Co. 2007 Equity Incentive Plan Form of Notice of Grant and Terms and Conditions for Stock Option Grant (incorporated by reference to Exhibit 10.31 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2007 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000095013408001572/d53331exv10w31.htm)] (2) |

Rewritten

| 10.9 | | [removed: Southwest] [added: [Southwest] Airlines Co. Excess Benefit Plan (incorporated by reference to Exhibit 10.32 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2008 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312509015591/dex1032.htm)] (2) |

Rewritten

| 10.10 | | [removed: Amendment] [added: [Amendment] No. 1 to the Southwest Airlines Co. Excess Benefit Plan (incorporated by reference to Exhibit 10.33 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2008 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312509015591/dex1033.htm)] (2) |

Rewritten

| 10.11 | | [removed: Amendment] [added: [Amendment] No. 2 to the Southwest Airlines Co. Excess Benefit Plan (incorporated by reference to Exhibit 10.34 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2008 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312509015591/dex1034.htm)] (2) |

Rewritten

| 10.12 | | [removed: Amended] [added: [Amended] and Restated Southwest Airlines Co. 2005 Excess Benefit Plan (as amended and restated, effective as of [removed: March] [added: January] 1, [removed: 2016)] [added: 2018)] (incorporated by reference to Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, [removed: 2016] [added: 2017] (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238017000167/luv-9302017ex105.htm)] (2) |

Rewritten

| 10.13 | | [removed: Form] [added: [Form] of Indemnification Agreement between the Company and its Directors (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed January 22, 2009 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312509009729/dex101.htm)] |

Rewritten

| 10.14 | | [removed: Southwest] [added: [Southwest] Airlines Co. Amended and Restated 2007 Equity Incentive Plan Form of Notice of Grant and Terms and Conditions for Restricted Stock Unit grants (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238014000117/luv-6302014xex103.htm)] (2) |

Rewritten

| 10.15 | | [removed: $1,000,000,000] [added: [$1,000,000,000] Revolving Credit Facility Agreement among the Company, the Banks party thereto, Barclays Bank PLC, as Syndication Agent, Bank of America, N.A., BNP Paribas, Goldman Sachs Bank USA, Morgan Stanley Senior Funding, Inc., U.S. Bank National Association, and Wells Fargo Bank, N.A., as Documentation Agents, JPMorgan Chase Bank, N.A. and Citibank, N.A., as Co-Administrative Agents, and JPMorgan Chase Bank, N.A., as Paying Agent, dated as of August 3, 2016 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed August 9, 2016 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312516676282/d223237dex101.htm)] |

Rewritten

| 10.16 | | [removed: Purchase] [added: [Purchase] Agreement No. 3729 and Aircraft General Terms Agreement, dated December 13, 2011, between The Boeing Company and the Company (incorporated by reference to Exhibit 10.28 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2011 (File No. [removed: 1-7259)); Supplemental Agreements Nos.] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000119312512049647/d293991dex1028.htm) [Supplemental Agreement No.] 1 [removed: and 2] (incorporated by reference to Exhibits 10.3 [removed: and 10.4, respectively,] to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (File No. [removed: 1-7259)); Supplemental] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238013000097/sa-1topa3729_redacted.htm) [Supplemental] Agreement No. [added: 2 (incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238013000097/sa-2topa3792_redacted.htm) [Supplemental Agreement No.] 3 (incorporated by reference to Exhibit 10.27(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 (File No. [removed: 1-7259)); Supplemental] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238014000010/luv-12312013xex1027a.htm) [Supplemental] Agreement No. 4 (incorporated by reference to Exhibit 10.18(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (File No. [removed: 1-7259)); Supplemental] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238016000175/luv-12312015xex1018a.htm) [Supplemental] Agreement No. 5 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2016 (File No. [removed: 1-7259)).] [added: 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238016000252/luv-6302016xex102.htm); [Supplemental Agreement No. 6 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238017000167/luv-9302017xex102.htm) [Supplemental Agreement No. 7 (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238017000167/luv-9302017xex103.htm); [Supplemental Letter Agreement No. 6-1162-KLK-0059R3 (incorporated by reference to Exhibit 10.4 to the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2017 (File No. 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238017000167/luv-9302017xex104.htm)] (1) |

Rewritten

| 10.17 | | [removed: Southwest] [added: [Southwest] Airlines Co. Senior Executive Short Term Incentive Plan (incorporated by reference to Exhibit 99.1 to the Company’s Current Report on Form 8-K filed January 30, 2013 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312513030183/d476691dex991.htm)] (2) |

Rewritten

| 10.18 | | [removed: Southwest] [added: [Southwest] Airlines Co. Deferred Compensation Plan for Senior Leadership and Non-Employee Members of the Southwest Airlines Co. Board of Directors (as amended and restated, effective as of [removed: March] [added: January] 1, [removed: 2016)] [added: 2018)] (incorporated by reference to Exhibit 10.6 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, [removed: 2016] [added: 2017] (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238017000167/luv-9302017ex106.htm)] (2) |

Rewritten

| 10.19 | | [removed: Southwest] [added: [Southwest] Airlines Co. Amended and Restated 2007 Equity Incentive Plan Form of Notice of Grant and Terms and Conditions for Performance-Based Restricted Stock Unit grants (incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014 (File No. [removed: 1-7259)).] [added: 1-7259)).](http://www.sec.gov/Archives/edgar/data/92380/000009238014000117/luv-6302014xex104.htm)] (2) |

Rewritten

| 23 | | [removed: Consent] [added: [Consent] of Ernst & Young LLP, Independent Registered Public Accounting [removed: Firm.] [added: Firm.](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/luv-12312017xex23.htm)] |

Rewritten

| 31.1 | | [removed: Rule] [added: [Rule] 13a-14(a) Certification of Chief Executive [removed: Officer.] [added: Officer.](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/luv-12312017xex311.htm)] |

Rewritten

| 31.2 | | [removed: Rule] [added: [Rule] 13a-14(a) Certification of Chief Financial [removed: Officer.] [added: Officer.](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/luv-12312017xex312.htm)] |

Rewritten

| 32 | | [removed: Section] [added: [Section] 1350 Certification of Chief Executive Officer and Chief Financial [removed: Officer.] [added: Officer.](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/luv-12312017xex32.htm)] (3) |

Rewritten

| | | [removed: (File No. 1-7259)); Supplemental Agreements Nos. 82 and 83 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (File No. 1-7259)); Supplemental Agreement No. 84 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013 (File No. 1-7259)); Supplemental] [added: [Supplemental] Agreement No. [removed: 85] [added: 98] (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, [removed: 2013] [added: 2016] (File No. [removed: 1-7259)); Supplemental] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238017000029/luv-12312016xex101a.htm) [Supplemental] Agreement No. [removed: 86] [added: 99] (incorporated by reference to Exhibit [removed: 10.1] [added: 10.1(b)] to the Company’s [removed: Quarterly] [added: Annual] Report on Form [removed: 10-Q] [added: 10-K] for the [removed: quarter] [added: year] ended [removed: March] [added: December] 31, [removed: 2014] [added: 2016] (File No. [removed: 1-7259)); Supplemental] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238017000029/luv-12312016xex101b.htm) [Supplemental] Agreement No. [removed: 87] [added: 100] (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended [removed: June 30, 2014] [added: March 31, 2017] (File No. [removed: 1-7259)); Supplemental] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238017000078/luv-3312017xex101.htm) [Supplemental] Agreement No. [removed: 88] [added: 101] (incorporated by reference to Exhibit [removed: 10.1] [added: 10.2] to the Company’s Quarterly Report on Form 10-Q for the quarter ended [removed: September 30, 2014 (File No. 1-7259)); Supplemental Agreements Nos. 89 and 90 (incorporated by reference to Exhibits 10.1(a) and 10.1(b), respectively, to the Company’s Annual Report on Form 10-K for the year ended December] [added: March] 31, [removed: 2014] [added: 2017] (File No. [removed: 1-7259)); Supplemental] [added: 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238017000078/luv-3312017xex102.htm) [Supplemental] Agreement No. [removed: 91] [added: 102] (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, [removed: 2015] [added: 2017] (File No. [removed: 1-7259)); Supplemental Letter] [added: 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238017000146/luv-6302017xex101.htm); [Supplemental] Agreement No. [removed: 1810-LA-1501773] [added: 103] (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, [removed: 2015 (File No. 1-7259)); Supplemental Agreement No. 92 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (File No. 1-7259)); Supplemental Agreement No. 93 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2016] [added: 2017] (File No. [removed: 1-7259)); Supplemental] [added: 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238017000167/luv-9302017xex101.htm); [Supplemental Letter] Agreement No. [removed: 94] [added: 6-1162-KLK-0059R3] (incorporated by reference to Exhibit [removed: 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2016 (File No. 1-7259)); Supplemental Agreements Nos. 95, 96, and 97 (incorporated by reference to Exhibits 10.1, 10.2, and 10.3, respectively,] [added: 10.4] to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, [removed: 2016] [added: 2017] (File No. [removed: 1-7259)).] [added: 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238017000167/luv-9302017xex104.htm).] (1) |

New in FY2017

| | | [Supplemental Agreement No. 11 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2000](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/sa111810redacted.txt), including [Letter Agreement 6-1162-RLL-932R1](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/rll932r1redlined.txt) and [Table of Contents](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/tableofcontents11.txt) (File No. 1-7259)); [Supplemental Agreement No. 12 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2000](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/sa121810redacted.txt), including [Purchase Agreement Amendments](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/pasa12redacted.txt) (File No. 1-7259)); [Supplemental Agreement No. 13 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2000](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/sa13redacted.txt), including [Purchase Agreement Amendments](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/pasa13.txt), [Letter Agreement No. 6-1162-RLL-932R2](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/rll932r2.txt), [Letter Agreement No. 6-1162-RLL-933R9](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/rll933r9redacted.txt), [Letter Agreement No. 6-1162-RLL-934R1](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/rll934r2redlined.txt), [Letter Agreement No. 6-1162-RLL-941R1](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/rll941r2redlined.txt), [Letter Agreement No. 6-1162-KJJ-054](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/kjj054busmatters.txt), [Letter Agreement No. 6-1162-KJJ-055](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/kjj055strucmatters.txt), [Letter Agreement No. 6-1162-KJJ-056](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/kjj056noiseemission.txt), [Letter Agreement No. 6-1162-KJJ-057](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/kjj057productdev.txt), [Letter Agreement No. 6-1162-KJJ-058](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/kjj058submatters.txt), and [Price Adjustment](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/exhibitd1.txt) (File No. 1-7259)); [Supplemental Agreement No. 14 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2000](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/sa141810redacted.txt), including [Purchase Agreement Amendments](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/pa1810sa14redacted.txt), [Letter Agreement No. 6-1162-RLL-934R2](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/rll934r3redlined.txt), and [Letter Agreement No. 6-1162-KJJ-150](http://www.sec.gov/Archives/edgar/data/92380/000009238000500006/kjj150fccmode.txt) (File No. 1-7259)); [Supplemental Agreements Nos. 15, 16, 17, 18, and 19 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2001 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000095013401508530/d91871ex10-1.txt); [Supplemental Agreements Nos. 20, 21, 22, 23, and 24 (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2002 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238002000019/ex10_3.txt); [Supplemental Agreements Nos. 25, 26, 27, 28, and 29 (incorporated by reference to Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238003000013/ex10_8.txt); [Supplemental Agreements Nos. 30, 31, 32, and 33 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2003 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000095013404000842/d11818exv10w1.txt); [Supplemental Agreements Nos. 34, 35, 36, 37, and 38 (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238004000016/ex10-3.txt); [Supplemental Agreements Nos. 39 and 40 (incorporated by reference to Exhibit 10.6 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2004 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238004000028/ex10-6.txt); [Supplemental Agreement No. 41 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000095013405002093/d21965exv10w1.htm); [Supplemental Agreements Nos. 42, 43, and 44 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2005 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238005000006/ex10-1.txt); [Supplemental Agreement No. 45 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2005 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238005000012/ex10-1.txt); [Supplemental Agreements Nos. 46 and 47 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2006 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000095013406007697/d35241exv10w1.htm); [Supplemental Agreement No. 48 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238006000009/exhibit_10-1.htm); [Supplemental Agreements Nos. 49 and 50 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238006000020/ex10-1.htm); [Supplemental Agreement No. 51 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2006 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000095013407001724/d42975exv10w1.htm); [Supplemental Agreement No. 52 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238007000014/ex10-1.htm); [Supplemental Agreement No. 53 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2007 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238007000024/ex10_1.htm); [Supplemental Agreement No. 54 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2007 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238007000034/ex10_1.htm); [Supplemental Agreement No. 55 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2007 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238007000034/ex10_2.htm); [Supplemental Agreement No. 56 (incorporated by reference to Exhibit 10.1 to Southwest’s Annual Report on Form 10-K for the year ended December 31, 2007 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000095013408001572/d53331exv10w1.htm); [Supplemental Agreement No. 57 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238008000009/ex10_1.htm); [Supplemental Agreement No. 58 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238008000009/ex10_2.htm); [Supplemental Agreement No. 59 (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238008000009/ex10_3.htm) [Supplemental Agreement No. 60 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2008 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238008000014/ex10_1.htm); [Supplemental Agreement No. 61 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2008 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238008000018/ex10_1.htm); [Supplemental Agreement No. 62 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238009000016/ex10_1.htm); [Supplemental Agreement No. 63 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238009000016/ex10_2.htm); [Supplemental Agreement No. 64 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2010 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238010000032/ex10_1.htm); |

New in FY2017

| | | [Supplemental Agreement No. 65 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2010 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238010000079/ex10_1.htm); [Supplemental Agreement No. 66 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2010 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238010000099/ex10_1.htm); [Supplemental Agreement No. 67 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000119312511026045/dex101a.htm); [Supplemental Agreement No. 68 (incorporated by reference to Exhibit 10.1(b) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000119312511026045/dex101b.htm); [Supplemental Agreement No. 69 (incorporated by reference to Exhibit 10.1(c) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000119312511026045/dex101c.htm); [Supplemental Agreement No. 70 (incorporated by reference to Exhibit 10.1(d) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000119312511026045/dex101d.htm); [Supplemental Agreement No. 71 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238011000020/ex10_1.htm); [Supplemental Agreement No. 72 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238011000020/ex10_2.htm); [Supplemental Agreement No. 73 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2011 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238011000070/ex10_1.htm); [Supplemental Agreement No. 74 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2011 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238011000088/ex10_1.htm); [Supplemental Agreement No. 75 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2011 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000119312512049647/d293991dex101a.htm); [Supplemental Agreement No. 76 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238012000089/ex10_1.htm); [Supplemental Agreement No. 77 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238012000089/ex10_2.htm); [Supplemental Agreement No. 78 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238012000103/ex10_1.htm); [Supplemental Agreement No. 79 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238012000103/ex10_2.htm); [Supplemental Agreement No. 80 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238013000020/sa80topa18101redacted.htm); [Supplemental Agreement No. 81 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 (File No. 1-7259))](http://www.sec.gov/Archives/edgar/data/92380/000009238013000020/sa81topa1810redacted.htm); [Supplemental Agreement No. 82 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238013000097/sa-82topax1810_redacted.htm) [Supplemental Agreement No. 83 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238013000097/sa-83topax1810_redacted.htm) [Supplemental Agreement No. 84 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238013000111/sa-84topax1810redacted.htm) [Supplemental Agreement No. 85 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238014000010/luv-12312013xex101a.htm) [Supplemental Agreement No. 86 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2014 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238014000024/sa-86topax18101redacted.htm) [Supplemental Agreement No. 87 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238014000117/sa-87topax1810redacted.htm) [Supplemental Agreement No. 88 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2014 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238014000151/sa-88pax18101redacted.htm) [Supplemental Agreement No. 89 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238015000027/luv-12312014xex101a.htm) [Supplemental Agreement No. 90 (incorporated by reference to Exhibit 10.1(b) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238015000027/luv-12312014xex101b.htm) [Supplemental Agreement No. 91 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238015000098/luv-6302015xex101.htm) [Supplemental Letter Agreement No. 1810-LA-1501773 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2015 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238015000129/luv-9302015xex101.htm) [Supplemental Agreement No. 92 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238016000175/luv-12312015xex101a.htm) [Supplemental Agreement No. 93 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2016 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238016000213/luv-3312016xex101.htm) [Supplemental Agreement No. 94 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2016 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238016000252/luv-6302016xex101.htm) [Supplemental Agreement No. 95 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238016000270/luv-9302016xex101.htm) [Supplemental Agreement No. 96 (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238016000270/luv-9302016xex102.htm) [Supplemental Agreement No. 97 (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016 (File No. 1-7259));](http://www.sec.gov/Archives/edgar/data/92380/000009238016000270/luv-9302016xex103.htm) |

New in FY2017

| 10.16(a) | | [Supplemental Agreement No. 8 to Purchase Agreement No. 3729, dated December 13, 2011, between The Boeing Company and the Company.](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/luv-12312017xex101.htm) (1) |

New in FY2017

| 10.20 | | [Consulting Agreement, dated as of June 30, 2017, by and between Arthur Jefferson Lamb III and Southwest Airlines Co. (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8–K filed July 3, 2017 (File No. 1–7259)).](http://www.sec.gov/Archives/edgar/data/92380/000119312517220944/d408249dex101.htm) (2) |

New in FY2017

| 21 | | [Subsidiaries of the Company.](https://www.sec.gov/Archives/edgar/data/92380/000009238018000031/luv-12312017xex21.htm) |

Dropped from FY2016

| | | |

Dropped from FY2016

| --- | --- | --- |

Dropped from FY2016

| | | The Company is not filing any other instruments evidencing any indebtedness because the total amount of securities authorized under any single such instrument does not exceed 10 percent of its total consolidated assets. Copies of such instruments will be furnished to the Securities and Exchange Commission upon request. |

Dropped from FY2016

| | | December 31, 1999 (File No. 1-7259)); Supplemental Agreements Nos. 11, 12, 13, and 14 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2000 (File No. 1-7259)); Supplemental Agreements Nos. 15, 16, 17, 18, and 19 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2001 (File No. 1-7259)); Supplemental Agreements Nos. 20, 21, 22, 23, and 24 (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2002 (File No. 1-7259)); Supplemental Agreements Nos. 25, 26, 27, 28, and 29 (incorporated by reference to Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003 (File No. 1-7259)); Supplemental Agreements Nos. 30, 31, 32, and 33 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2003 (File No. 1-7259)); Supplemental Agreements Nos. 34, 35, 36, 37, and 38 (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004 (File No. 1-7259)); Supplemental Agreements Nos. 39 and 40 (incorporated by reference to Exhibit 10.6 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2004 (File No. 1-7259)); Supplemental Agreement No. 41 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 (File No. 1-7259)); Supplemental Agreements Nos. 42, 43, and 44 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2005 (File No. 1-7259)); Supplemental Agreement No. 45 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2005 (File No. 1-7259)); Supplemental Agreements Nos. 46 and 47 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2006 (File No. 1-7259)); Supplemental Agreement No. 48 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 (File No. 1-7259)); Supplemental Agreements Nos. 49 and 50 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006 (File No. 1-7259)); Supplemental Agreement No. 51 (incorporated by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2006 (File No. 1-7259)); Supplemental Agreement No. 52 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007 (File No. 1-7259)); Supplemental Agreement No. 53 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2007 (File No. 1-7259)); Supplemental Agreements Nos. 54 and 55 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2007 (File No. 1-7259)); Supplemental Agreement No. 56 (incorporated by reference to Exhibit 10.1 to Southwest’s Annual Report on Form 10-K for the year ended December 31, 2007 (File No. 1-7259)); Supplemental Agreements Nos. 57, 58, and 59 (incorporated by reference to Exhibits 10.1, 10.2, and 10.3, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008 (File No. 1-7259)); Supplemental Agreement No. 60 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2008 (File No. 1-7259)); Supplemental Agreement No. 61 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2008 (File No. 1-7259)); Supplemental Agreements Nos. 62 and 63 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009 (File No. 1-7259)); Supplemental Agreement No. 64 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2010 (File No. 1-7259)); Supplemental Agreement No. 65 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2010 (File No. 1-7259)); Supplemental Agreement No. 66 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2010 (File No. 1-7259)); Supplemental Agreement No. 67 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (File No. 1-7259)); Supplemental Agreement No. 68 (incorporated by reference to Exhibit 10.1(b) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (File No. 1-7259)); Supplemental Agreement No. 69 (incorporated by reference to Exhibit 10.1(c) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 |

Dropped from FY2016

| | | (File No. 1-7259)); Supplemental Agreement No. 70 (incorporated by reference to Exhibit 10.1(d) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (File No. 1-7259)); Supplemental Agreements Nos. 71 and 72 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011 (File No. 1-7259)); Supplemental Agreement No. 73 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2011 (File No. 1-7259)); Supplemental Agreement No. 74 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2011 (File No. 1-7259)); Supplemental Agreement No. 75 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2011 (File No. 1-7259)); Supplemental Agreements Nos. 76 and 77 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 (File No. 1-7259)); Supplemental Agreements Nos. 78 and 79 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 1-7259)); Supplemental Agreements Nos. 80 and 81 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 (File No. 1-7259)); Supplemental Agreements Nos. 82 and 83 (incorporated by reference to Exhibits 10.1 and 10.2, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (File No. 1-7259)); Supplemental Agreement No. 84 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013 (File No. 1-7259)); Supplemental Agreement No. 85 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 (File No. 1-7259)); Supplemental Agreement No. 86 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2014 (File No. 1-7259)); Supplemental Agreement No. 87 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014 (File No. 1-7259)); Supplemental Agreement No. 88 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2014 (File No. 1-7259)); Supplemental Agreements Nos. 89 and 90 (incorporated by reference to Exhibits 10.1(a) and 10.1(b), respectively, to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 (File No. 1-7259)); Supplemental Agreement No. 91 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015 (File No. 1-7259)); Supplemental Letter Agreement No. 1810-LA-1501773 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2015 (File No. 1-7259)); Supplemental Agreement No. 92 (incorporated by reference to Exhibit 10.1(a) to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (File No. 1-7259)); Supplemental Agreement No. 93 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2016 (File No. 1-7259)); Supplemental Agreement No. 94 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2016 (File No. 1-7259)); Supplemental Agreements Nos. 95, 96, and 97 (incorporated by reference to Exhibits 10.1, 10.2, and 10.3, respectively, to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016 (File No. 1-7259)). (1) |

Dropped from FY2016

| 10.1(a) | | Supplemental Agreement No. 98 to Purchase Agreement No. 1810, dated January 19, 1994, between The Boeing Company and the Company. (1) |

Dropped from FY2016

| 10.1(b) | | Supplemental Agreement No. 99 to Purchase Agreement No. 1810, dated January 19, 1994, between The Boeing Company and the Company. (1) |

Dropped from FY2016

| 21 | | Subsidiaries of the Company. |

Dropped from FY2016

| 101.INS | | XBRL Instance Document |

Dropped from FY2016

| 101.SCH | | XBRL Taxonomy Extension Schema Document |

Dropped from FY2016

| 101.CAL | | XBRL Taxonomy Extension Calculation Linkbase Document |

Dropped from FY2016

| 101.DEF | | XBRL Taxonomy Extension Definition Linkbase Document |

Dropped from FY2016

| 101.LAB | | XBRL Extension Labels Linkbase Document |

Dropped from FY2016

| 101.PRE | | XBRL Taxonomy Extension Presentation Linkbase Document |

Dropped from FY2016

| | |

Dropped from FY2016

| --- | --- |

Dropped from FY2016

| (1) | Pursuant to 17 CFR 240.24b-2, confidential information has been omitted and has been filed separately with the Securities and Exchange Commission pursuant to a Confidential Treatment Application filed with the Commission. |

Dropped from FY2016

| (2) | Management contract or compensatory plan or arrangement. |

Dropped from FY2016

| (3) | This exhibit is being furnished rather than filed and shall not be deemed incorporated by reference into any filing, in accordance with Item 601 of Regulation S-K. |

Dropped from FY2016

A copy of each exhibit may be obtained at a price of 15 cents per page, $10.00 minimum order, by writing to: Investor Relations, Southwest Airlines Co., P.O. Box 36611, Dallas, Texas 75235-1611.

Dropped from FY2016

SIGNATURES

Dropped from FY2016

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Dropped from FY2016

| | SOUTHWEST AIRLINES CO. | |

Dropped from FY2016

| February 7, 2017 | By | /s/ Tammy Romo |

Dropped from FY2016

| | | Tammy Romo |

Dropped from FY2016

| | | Executive Vice President & Chief Financial Officer |

Dropped from FY2016

| | | (On behalf of the Registrant and in |

Dropped from FY2016

| | | her capacity as Principal Financial |

Dropped from FY2016

| | | and Accounting Officer) |

Dropped from FY2016

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on February 7, 2017, on behalf of the registrant and in the capacities indicated.

Dropped from FY2016

| Signature | | Title |

Dropped from FY2016

| /s/ GARY C. KELLY | | Chairman of the Board & Chief Executive Officer (Principal Executive Officer) |

Dropped from FY2016

| Gary C. Kelly | | |

Dropped from FY2016

| /s/ TAMMY ROMO | | Executive Vice President & Chief Financial Officer (Principal Financial & Accounting Officer) |

Dropped from FY2016

| Tammy Romo | | |

Dropped from FY2016

| /s/ RON RICKS | | Vice Chairman of the Board |

Dropped from FY2016

| Ron Ricks | | |

Dropped from FY2016

| /s/ DAVID W. BIEGLER | | Director |

Dropped from FY2016

| David W. Biegler | | |

Dropped from FY2016

| /s/ J. VERONICA BIGGINS | | Director |

An excerpt. Shown here: all 30 rewritten, all 5 added and 40 of 60 removed. The counts are complete. For every sentence, read Item 15. Exhibits and Financial Statement Schedules in the FY2017 filing and the FY2016 filing.

Item 16. 10-K Summary

0 rewritten, 55 added, 0 removed, 0 unchanged

New section this year

New in FY2017

None.

New in FY2017

SIGNATURES

New in FY2017

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

New in FY2017

| | | |

New in FY2017

| --- | --- | --- |

New in FY2017

| | | |

New in FY2017

| | SOUTHWEST AIRLINES CO. | |

New in FY2017

| | | |

New in FY2017

| February 7, 2018 | By | /s/ Tammy Romo |

New in FY2017

| | | |

New in FY2017

| | | Tammy Romo |

New in FY2017

| | | Executive Vice President & Chief Financial Officer |

New in FY2017

| | | (On behalf of the Registrant and in |

New in FY2017

| | | her capacity as Principal Financial |

New in FY2017

| | | and Accounting Officer) |

New in FY2017

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on February 7, 2018, on behalf of the registrant and in the capacities indicated.

New in FY2017

| | | |

New in FY2017

| --- | --- | --- |

New in FY2017

| | | |

New in FY2017

| Signature | | Title |

New in FY2017

| /s/ GARY C. KELLY | | Chairman of the Board & Chief Executive Officer (Principal Executive Officer) |

New in FY2017

| Gary C. Kelly | | |

New in FY2017

| | | |

New in FY2017

| /s/ TAMMY ROMO | | Executive Vice President & Chief Financial Officer (Principal Financial & Accounting Officer) |

New in FY2017

| Tammy Romo | | |

New in FY2017

| | | |

New in FY2017

| /s/ RON RICKS | | Vice Chairman of the Board |

New in FY2017

| Ron Ricks | | |

New in FY2017

| | | |

New in FY2017

| /s/ DAVID W. BIEGLER | | Director |

New in FY2017

| David W. Biegler | | |

New in FY2017

| | | |

New in FY2017

| /s/ J. VERONICA BIGGINS | | Director |

New in FY2017

| J. Veronica Biggins | | |

New in FY2017

| | | |

New in FY2017

| /s/ DOUGLAS H. BROOKS | | Director |

New in FY2017

| Douglas H. Brooks | | |

New in FY2017

| | | |

New in FY2017

| /s/ WILLIAM H. CUNNINGHAM | | Director |

New in FY2017

| William H. Cunningham | | |

An excerpt. Shown here: all 0 rewritten, 40 of 55 added and all 0 removed. The counts are complete. For every sentence, read Item 16. 10-K Summary in the FY2017 filing.