Southwest Airlines 10-Q 2026-03-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended March 31, 2026

Commission File No. 1-7259

SOUTHWEST AIRLINES CO.

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: (214) 792-4000

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

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. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes ☐ No x

Number of shares of Common Stock outstanding as of the close of business on April 22, 2026: 488,773,713

TABLE OF CONTENTS TO FORM 10-Q

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements

Condensed Consolidated Balance Sheet as of March 31, 2026 and December 31, 2025

Condensed Consolidated Statement of Comprehensive Income (Loss) for the three months ended March 31, 2026 and 2025

Condensed Consolidated Statement of Stockholders' Equity as of March 31, 2026 and 2025

Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2026 and 2025

Notes to Condensed Consolidated Financial Statements

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Item 4. Controls and Procedures

PART II - OTHER INFORMATION

Item 1. Legal Proceedings

Item 1A. Risk Factors

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Item 3. Defaults Upon Senior Securities

Item 4. Mine Safety Disclosures

Item 5. Other Information

Item 6. Exhibits

SIGNATURES

SOUTHWEST AIRLINES CO.

FORM 10-Q

PART I – FINANCIAL INFORMATION

Southwest Airlines Co.

Condensed Consolidated Balance Sheet

(in millions)

(unaudited)

See accompanying notes.

Southwest Airlines Co.

Condensed Consolidated Statement of Comprehensive Income (Loss)

(in millions, except per share amounts)

(unaudited)

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Relevant comparative operating statistics for the three months ended March 31, 2026 and 2025 are included below. The Company provides these operating statistics because they are commonly used in the airline industry and, as such, allow readers to compare the Company’s performance against its results for the prior year period, as well as against the performance of the Company’s peers.

(a)A revenue passenger mile is one paying passenger flown one mile. Also referred to as "traffic," which is a measure of demand for a given period.

(b)An available seat mile is one seat (empty or full) flown one mile. Also referred to as "capacity," which is a measure of supply or the space available to carry passengers in a given period.

(c)Revenue passenger miles divided by available seat miles.

(d)Seats flown is calculated using total number of seats available by aircraft type multiplied by the total trips flown by the same aircraft type during a particular period.

(e)Seats per trip is calculated by dividing seats flown by trips flown.

(f)Calculated as passenger revenue divided by revenue passenger miles. Also referred to as "yield," this is the average cost paid by a paying passenger to fly one mile, which is a measure of revenue production and fares.

(g)Calculated as operating revenues divided by available seat miles. Also referred to as "operating unit revenues" or "RASM," this is a measure of operating revenue production based on the total available seat miles flown during a particular period.

(h)Calculated as passenger revenue divided by available seat miles. Also referred to as "passenger unit revenues", this is a measure of passenger revenue production based on the total available seat miles flown during a particular period.

(i)Calculated as operating expenses divided by available seat miles. Also referred to as "unit costs" or "cost per available seat mile" or "CASM," this is the average cost to fly an aircraft seat (empty or full) one mile, which is a measure of cost efficiency.

Financial Highlights

The Company reports its results in accordance with GAAP. The Company also provides certain non-GAAP financial measures which the Company's management also utilizes to evaluate its ongoing financial performance, and the Company believes provides additional insight to investors as supplemental information to its GAAP results, as noted in the following tables. See Note Regarding Use of Non-GAAP Financial Measures and the Reconciliation of Reported Amounts to Non-GAAP Financial Measures for additional detail regarding non-GAAP financial measures.

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Hedging and Aircraft Fuel Risk

Changes in fuel prices could materially affect the Company’s results of operations. As discussed in Note 3 to the unaudited Condensed Consolidated Financial Statements, the Company discontinued its fuel hedging program in

2025. During second quarter 2025, the Company terminated its remaining portfolio of fuel hedging contracts, which were scheduled to settle through 2027, to effectively close its fuel hedging portfolio and program. Consequently, the Company is fully exposed to fluctuations in fuel prices, as is common in the airline industry. The Company currently expects to consume approximately 555 million gallons of jet fuel in the second quarter of 2026. Based on this anticipated usage, a change in jet fuel prices of one-cent per gallon would impact the Company’s Aircraft fuel and related taxes expense by $5.6 million for second quarter 2026.

As of March 31, 2026, the Company had no cash collateral provided to or held from derivative counterparties and thus had no cash collateral exposure. See Note 3 to the unaudited Condensed Consolidated Financial Statements.

Financial Market Risk

The Company currently has agreements with organizations that process credit card transactions arising from purchases of air travel tickets by its Customers utilizing American Express, Discover, and MasterCard/VISA. Credit card processors have financial risk associated with tickets purchased for air travel because the processor generally forwards the cash related to the purchase to the Company soon after the purchase is completed, but the air travel generally occurs after that time; therefore, the processor will have liability if the Company does not ultimately provide the air travel. Under these processing agreements, and based on specified conditions, increasing amounts of cash reserves could be required to be posted with the counterparty. There was no cash reserved for this purpose as of March 31, 2026.

A majority of the Company’s sales transactions are processed by Chase Paymentech. Should Customer chargebacks processed by Chase Paymentech reach a certain level, cash proceeds from advance ticket sales could be held back and used to establish a reserve account to cover such chargebacks and any other Customer-disputed charges that might occur. Additionally, cash reserves are required to be established if the Company’s credit rating falls to specified levels below investment grade. Cash reserve requirements are based on the Company’s public debt rating and a corresponding percentage of the Company’s Air traffic liability. As of March 31, 2026, no cash holdbacks were in place.

See Item 7A "Quantitative and Qualitative Disclosures About Market Risk" in the Company's Annual Report on Form 10-K for the year ended December 31, 2025, for further information about market risk, and Note 3 to the unaudited Condensed Consolidated Financial Statements in this Form 10-Q for further information about the Company's derivative instruments.

Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures (as defined in Rule 13a-15(e) of the Exchange Act) designed to provide reasonable assurance that the information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC's rules and forms. These include controls and procedures designed to ensure that this information is accumulated and communicated to the Company's management, including its Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. The Company's management, with the participation of the Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the Company's disclosure controls and procedures as of March 31, 2026. 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 March 31, 2026, at the reasonable assurance level.

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting (as defined in Rule 13a–15(f) under the Exchange Act) during the fiscal quarter ended March 31, 2026, that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

See Item 3. Legal Proceedings in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for a description of material legal proceedings. The legal proceedings described below are included in this Quarterly Report on Form 10-Q to disclose material updates or developments in the matter. Except as presented below, there have been no material changes to the legal proceedings disclosed in Item 3. Legal Proceedings in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

On August 26, 2021, a complaint alleging breach of contract and seeking certification as a class action was filed against the Company in the United States District Court for the Western District of Texas in Waco. The complaint alleges that the Company breached its Contract of Carriage and other alleged agreements in connection with its use of the allegedly defective MAX aircraft manufactured by The Boeing Company. The complaint seeks damages on behalf of putative classes of customers who provided valuable consideration, whether in money or other form (e.g., voucher, miles/points, etc.), in exchange for a ticket for air transportation with the Company, which transportation took place between August 29, 2017, and March 13, 2019. The complaint generally seeks money damages, declaratory relief, and attorneys’ fees and other costs. On October 27, 2021, the Company filed a multi-faceted motion challenging the complaint based upon lack of subject matter jurisdiction, the existence of a prior-filed complaint on appeal in the Fifth Circuit (the “Sherman Complaint”), improper venue, and failure to state a claim, and seeking to have the complaint's class contentions stricken. That motion was fully briefed by both parties and was argued to a United States Magistrate Judge on June 27, 2022. On July 5, 2022, the Magistrate Judge granted the motion in part and ordered the case stayed until the issuance of the Fifth Circuit's opinion in the Sherman Complaint. On November 28, 2022, the parties jointly notified the Court of the Fifth Circuit's decision regarding the Sherman Complaint. On March 23, 2023, the parties jointly notified the Court of the dismissal of the Sherman Complaint for lack of jurisdiction. Following more recent communications by the parties regarding the status of the stay, the Court directed the parties to file a joint status report, which was filed on February 24, 2025, with the Company renewing its request that the case be dismissed for lack of standing and lack of subject matter jurisdiction in light of the Fifth Circuit’s decision regarding the Sherman Complaint, which the plaintiffs opposed. On March 11, 2025, the Court heard argument of the parties’ respective positions on the Company’s request for dismissal for lack of standing and lack of subject matter jurisdiction. On June 9, 2025, the Court issued an order dismissing the case for lack of standing and lack of subject matter jurisdiction and entered final judgment in favor of the Company. On July 9, 2025, the plaintiffs in the case filed a notice of appeal to the Fifth Circuit Court of Appeals. The appeal was fully briefed by the parties. On April 16, 2026, the Fifth Circuit Court of Appeals issued an unpublished opinion affirming the ruling of the District Court and holding that the plaintiffs lack Article III standing and the case therefore cannot proceed.

Two complaints alleging violations of federal securities laws and seeking certification as a class action were filed (on January 10, 2023, and March 13, 2023, respectively) against the Company and certain of its officers in the United States District Court for the Southern District of Texas in Houston. The complaints seek damages on behalf of a putative class of persons who purchased or otherwise acquired the Company's common stock between June 13, 2020, and December 31, 2022. The complaints assert claims under Sections 10(b) and 20 of the Exchange Act and allege that the Company made material misstatements to investors regarding the Company's internal technology and alleged vulnerability to large-scale flight disruptions. The complaints generally seek money damages, pre-judgment and post-judgment interest, and attorneys' fees and other costs. The deadline in the first of these two cases to file a motion seeking appointment of lead plaintiff was March 13, 2023; four separate motions were filed, and three of the parties seeking appointment contested the issue. On July 17, 2023, the Court signed an order consolidating the two federal securities cases into the first-filed suit and also appointed plaintiff Michael Berry as lead plaintiff in the consolidated case, with his counsel of record to serve as lead counsel and liaison counsel. On September 15, 2023, the lead plaintiff filed an amended complaint that expanded the class period to include persons who purchased or otherwise acquired the Company's common stock between February 4, 2020, and March 14, 2023, while continuing to assert claims under Sections 10(b) and 20 of the Exchange Act based on alleged misstatements regarding the Company's internal technology and alleged vulnerability to large-scale flight disruptions. On November 20, 2023,

the Company and the individual defendants filed a motion to dismiss the amended complaint for failure to state a claim. Plaintiffs filed an opposition brief on January 26, 2024. The Company and the individual defendants filed a reply brief on February 23, 2024. On December 5, 2024, the United States District Court for the Southern District of Texas denied the motion to dismiss on the basis that "the issues are better suited for a summary judgment motion after the parties have had the opportunity to engage in discovery." On December 21, 2024, the Company moved for reconsideration of the December 5, 2024, order and, in the alternative, for permission to pursue an interlocutory appeal. The plaintiffs opposed both requests for relief. On April 3, 2025, the United States District Court for the Southern District of Texas conducted a hearing on the Company’s motion for reconsideration and requested the parties to confer and submit an agreed post-hearing briefing schedule in order for the Court to evaluate and determine the sufficiency of the allegations in plaintiffs’ amended complaint in accordance with the Private Securities Litigation Reform Act. The parties submitted their respective briefing on these issues. On March 31, 2026, the Court signed a memorandum opinion and order that granted defendants’ motion for reconsideration, withdrew the Court’s prior order denying defendants’ motion to dismiss plaintiffs’ complaint, and granted defendants’ motion to dismiss plaintiffs’ complaint without prejudice. The order granted plaintiffs leave to amend the complaint under specified parameters, including that any amended complaint be filed by April 24, 2026, and be accompanied by a synopsis of no more than ten pages, explaining how the amendments address the grounds for dismissal stated in the Court’s March 31 order. The Court further granted the Company and the other defendants leave to file responses to plaintiffs’ synopsis, also limited to ten pages, within fourteen days of the repleading. The Company denies all allegations of wrongdoing in the complaint, believes the plaintiffs' positions are without merit, and intends to vigorously defend itself in all respects.

On April 29, 2025, the Company received a demand letter addressed to the Board, dated April 28, 2025, from a purported Southwest Shareholder contending that the Company’s directors and senior officers breached their fiduciary duties in connection with the Board’s decision to end Southwest’s Bags Fly Free policy and to begin charging passengers for bags. The letter demanded that the Board investigate the circumstances surrounding the policy change and bring suit against individual directors and officers who allegedly breached their duties to the Company. On June 27, 2025, the Company sent a response to the demand letter on behalf of the Board rejecting the allegations and denying them and any other form of wrongdoing. The response letter also noted that the Board approved an amendment and restatement of the Company’s bylaws that, among other things, established a minimum ownership threshold of three percent of Southwest’s outstanding shares in order for a Southwest shareholder to institute or maintain a derivative proceeding, consistent with the provisions in Texas Senate Bill 29, which was signed into law on May 14, 2025. The response letter further noted that the purported shareholder who sent the demand letter claims to hold only 100 shares of the Company’s stock and thus fell well short of the three percent threshold. On July 10, 2025, the shareholder who sent the demand filed a shareholder derivative complaint in the United States District Court for the Northern District of Texas against various directors and officers of the Company based on the contentions asserted in the demand letter. The suit asserts, among other things, that the decision to change Southwest’s Bags Fly Free policy conflicts with the Company’s prior views regarding the policy and is detrimental to the Company’s business, and that the Company’s directors approved the policy to accede to pressure from large shareholder Elliott Investment Management L.P., to preserve their Board seats, or both, rather than to serve the Company’s interests. The complaint also asserts that the amendment and restatement of the Company’s bylaws is ineffective. On August 25, 2025, the Company and its Board moved to dismiss the derivative complaint and all claims on the grounds, among others, that the suit is barred by Texas Senate Bill 29 and the Company's bylaw passed pursuant thereto requiring a three percent ownership threshold in order for Company shareholders to bring derivative claims. The plaintiff opposed the motion, claiming the purportedly retroactive application of Texas Senate Bill 29 and the Company bylaw are unconstitutional; and the Company filed a reply in support of its motion to dismiss. Additionally, multiple entities sought and were granted leave to file three separate amicus curiae briefs in support of the Company's motion to dismiss and Texas Senate Bill 29; those included one amicus brief each by: (i) the Chamber of Commerce of the United States of America and the Texas Association of Business, (ii) the Alliance for Corporate Excellence, and (iii) Texans for Lawsuit Reform. Finally, in light of the constitutional challenge to Texas Senate Bill 29, on October 3, 2025, the State of Texas, represented by the Office of the Attorney General of Texas, filed a motion to intervene in the case and its own accompanying motion to dismiss the plaintiff's derivative suit and all claims therein as barred by Texas Senate Bill 29. The State of Texas’s motion to intervene was granted, and its motion to dismiss has been fully briefed by both the State and the plaintiff. On March 17, 2026,

the District Court signed a memorandum opinion and order granting the defendants’ motion to dismiss and dismissing with prejudice all claims of the plaintiff. Also on March 17, 2026, the Court signed a final judgment dismissing with prejudice all claims of the plaintiff. On April 15, 2026, the plaintiff filed a notice of appeal to the United States Court of Appeals for the Fifth Circuit. The Company and its Board deny all allegations of wrongdoing, believe the plaintiffs' positions and appeal are without merit, and intend to vigorously defend themselves in all respects against an appeal.

There have been no material changes to the factors disclosed in Item 1A. Risk Factors in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(1) On July 23, 2025, the Board approved a $2.0 billion share repurchase authorization of the Company's common stock. Subject to certain conditions, repurchases may be made in accordance with applicable securities laws in open market or private, including accelerated, repurchase transactions from time to time, depending on market conditions.

(2) Excludes immaterial amount of excise tax on share repurchases, net of issuances.

(3) Under a forward contract entered into by the Company in December 2025, the Company committed $750 million for the January 2026 ASR Program under which the Company paid $750 million in January 2026 and received total delivery of 17,965,193 shares as settlement in full. Upon completion of the January 2026 ASR Program in January 2026, the average purchase price per share for the 17,965,193 shares repurchased was $41.75.

(4) Under the First Quarter 2026 ASR Program, the Company paid $400 million and received an initial delivery of 6,597,939 shares during January 2026, representing an estimated 80 percent of the shares to be purchased by the Company under the First Quarter 2026 ASR Program. This share amount was based on the $48.50 closing price of the Company's common stock on January 29, 2026. Upon settlement, the third-party financial institution delivered 1,372,650 additional shares of the Company’s common stock to the Company in March 2026 based on a discount to the volume-weighted average price per share of the Company's common stock during the calculation period. Upon completion of the First Quarter 2026 ASR Program in March 2026, the average purchase price per share for the 7,970,589 shares repurchased was $50.18.

(5) During the period from March 13, 2026 through March 19, 2026, the Company repurchased $100 million of its outstanding common stock on the open market. The Company received a total of 2,494,040 shares of its common stock through the open market repurchases at an average price of $40.12 per share.

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable

None

(1) Certain confidential information contained in this agreement has been omitted because it is both not material and is of the type that the registrant treats as private or confidential.

(2) Management contract or compensatory plan or arrangement.

(3) Furnished, not filed.

SIGNATURES

Pursuant to the requirements 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.