Item 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) (1). The following is an index of the financial statements required by this item that are included in this Form 10-K:

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets—December 31, 2020 and 2019

Consolidated Statements of Operations for the years ended December 31, 2020, 2019 and 2018

Consolidated Statements of Comprehensive Income for the years ended December 31, 2020, 2019 and 2018

Consolidated Statements of Cash Flows for the years ended December 31, 2020, 2019 and 2018

Consolidated Statements of Stockholders' Equity for the years ended December 31, 2020, 2019 and 2018

Notes to the Consolidated Financial Statements

(2). Financial Statement Schedules. Financial statement schedules are not included herein as the required information is not applicable or is not present in amounts sufficient to require submission of the schedule, or because the information required is included in the Consolidated Financial Statements and accompanying notes included in this Form 10-K.

(3). Exhibit List.

The exhibits required by this item are listed below. The management contracts and compensatory plans or arrangements required to be filed as an exhibit to this Form 10-K are listed as Exhibits 10.14 through 10.23.

Note to Exhibits: Any representations and warranties of a party set forth in any agreement (including all exhibits and schedules thereto) filed with this Annual Report on Form 10-K have been made solely for the benefit of the other party to the agreement. Some of those representations and warranties were made only as of the date of the agreement or such other date as specified in the agreement, may be subject to a contractual standard of materiality different from what may be viewed as material to stockholders, or may have been used for the purpose of allocating risk between the parties rather than establishing matters as facts. Such agreements are included with this filing only to provide investors with information regarding the terms of the agreements, and not to provide investors with any other factual or disclosure information regarding the registrant or its business.

3.1(a) Delta's Amended and Restated Certificate of Incorporation (Filed as Exhibit 3.1 to Delta's Current Report on Form 8-K as filed on April 30, 2007).*

3.1 (b) Amendment to Amended and Restated Certificate of Incorporation (Filed as Exhibit 3.1 to Delta's Current Report on Form 8-K as filed on June 27, 2014).*

3.2 Delta's Bylaws (Filed as Exhibit 3.1 to Delta's Current Report on Form 8-K as filed on February 8, 2019).*

4.1 Description of Registrant's Securities.

Delta is not filing any instruments evidencing any indebtedness because the total amount of securities authorized under any single such instrument does not exceed 10% of the total assets of Delta and its subsidiaries on a consolidated basis. Copies of such instruments will be furnished to the Securities and Exchange Commission upon request.

10.1(a) Credit Agreement, dated as of April 19, 2018, among Delta Air Lines, Inc., as borrower, the lenders party thereto and JP Morgan Chase Bank, N.A., as administrative agent (Filed as Exhibit 10.1 to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2018).*

10.1(b) Amendment No. 1 to Credit Agreement, dated as of June 29, 2020, among Delta Air Lines, Inc., the lenders party thereto, and JP Morgan Chase Bank, N.A., as administrative agent (Filed as Exhibit 10.5 to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2020).*

Delta Air Lines, Inc. 2020 Form 10-K 117

10.2(a) 364-Day Term Loan Credit Agreement, dated as of March 17, 2020, among Delta Air Lines, Inc., the lenders party thereto, and JP Morgan Chase Bank, N.A., as administrative agent (Filed as Exhibit 10.1 to Delta's Quarterly Report on Form 10-Q for the quarter ended March 31, 2020).*

10.2(b) Amendment No. 1 to 364-Day Term Loan Credit Agreement, dated as of April 3, 2020, among Delta Air Lines, Inc., the lenders party thereto, and JP Morgan Chase Bank, N.A., as administrative agent (Filed as Exhibit 10.4(a) to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2020).*

10.2(c) Amendment No. 2 to 364-Day Term Loan Credit Agreement, dated as of June 29, 2020, among Delta Air Lines, Inc., the lenders party thereto, and JP Morgan Chase Bank, N.A., as administrative agent (Filed as Exhibit 10.4(b) to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2020).*

10.3 Payroll Support Program Agreement, dated as of April 20, 2020, between Delta Air Lines, Inc. and the United States Department of the Treasury (Filed as Exhibit 10.1 to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2020).*

10.4(a) Warrant Agreement, dated as of April 20, 2020, between Delta Air Lines, Inc. and the United States Department of the Treasury (Filed as Exhibit 10.2 to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2020).*

10.4(b) Form of Warrant to Purchase Common Stock.

10.5 Term Loan Credit Agreement, dated as of April 29, 2020, among Delta Air Lines, Inc., the lenders party thereto, and Barclays Bank PLC, as administrative agent (Filed as Exhibit 10.1 to Delta’s Current Report on Form 8-K filed with the Securities and Exchange Commission on April 30, 2020).*

10.6 Term Loan Credit and Guaranty Agreement, dated as of September 23, 2020, among Delta, SMIP, the guarantors party thereto, Barclays Bank PLC, as administrative agent, U.S. Bank National Association, as collateral administrator, and the lenders party thereto (filed as Exhibit 10.1 to Delta's Current Report on Form 8-K filed with the Securities and Exchange Commission on September 25, 2020)*.

10.7 Payroll Support Program Extension Agreement, dated as of January 15, 2021, between Delta Air Lines, Inc. and the United States Department of the Treasury.

10.8(a) Warrant Agreement, dated as of January 15, 2021, between Delta Air Lines, Inc. and the United States Department of the Treasury.

10.8(b) Form of Warrant to Purchase Common Stock.

10.9 Anchor Tenant Agreement dated as of December 9, 2010 between JFK International Air Terminal LLC and Delta Air Lines, Inc. (Filed as Exhibit 10.4 to Delta's Annual Report on Form 10-K for the year ended December 31, 2010).*

10.10 Amended and Restated Agreement of Lease by and between The Port Authority of New York and New Jersey and Delta Air Lines, Inc., dated as of September 13, 2017 (Filed as Exhibit 10.1 to Delta’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017).*

10.11(a) Airbus A330-900neo Aircraft and A350-900 Aircraft Purchase Agreement dated as of November 24, 2014 between Airbus S.A.S and Delta Air Lines, Inc. (Filed as Exhibit 10.9 to Delta's Annual Report on Form 10-K for the year ended December 31, 2014).*/**

10.11(b) Amendment No. 3, dated May 10, 2017, to Airbus A330-900 Aircraft and A350-900 Aircraft Purchase Agreement dated as of November 24, 2014 between Airbus S.A.S. and Delta Air Lines, Inc. (“Amendment No. 3”) (Filed as Exhibit 10.2(a) to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2017).*/**

10.11(c) Letter Agreements, dated May 10, 2017, relating to Amendment No. 3 (Filed as Exhibit 10.2(b) to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2017).*/**

Delta Air Lines, Inc. 2020 Form 10-K 118

10.11(d) Amendment No. 8, dated as of October 30, 2018, to Airbus A330-900 Aircraft and A350-900 Aircraft Purchase Agreement dated as of November 24, 2014 between Airbus S.A.S. and Delta Air Lines, Inc. (“Amendment No. 8”) (Filed as Exhibit 10.7(d) to Delta’s Annual Report on Form 10-K for the year ended December 31, 2018).*/**

10.11(e) Letter Agreements, dated as of October 30, 2018, relating to Amendment No. 8 (Filed as Exhibit 10.7(e) to Delta’s Annual Report on Form 10-K for the year ended December 31, 2018).*/**

10.11(f) Amendment No 11, dated as of July 30, 2020 to Airbus A330-900 Aircraft and A350-900 Aircraft Purchase Agreement, dated as of November 24, 2014 between Delta and Airbus S.A.S. (Filed as Exhibit 10.1(a) to Delta's Quarterly Report on Form 10-Q for the quarter ended September 30, 2020).*/**

10.11(g) Amended and Restated Letter Agreement No. 1, dated as of July 30, 2020, relating to Airbus A330-900 Aircraft and A350-900 Aircraft Purchase Agreement dated as of November 24, 2014 (Filed as Exhibit 10.1(b) to Delta's Quarterly Report on Form 10-Q for the quarter ended September 30, 2020).*/**

10.11(h) Amended and Restated Letter Agreement No. 4, dated as of July 30, 2020, relating to Airbus A330-900 Aircraft and A350-900 Aircraft Purchase Agreement dated as of November 24, 2014** (Filed as Exhibit 10.1(c) to Delta's Quarterly Report on Form 10-Q for the quarter ended September 30, 2020).*/**

10.12(a) Airbus A321neo Aircraft Purchase Agreement dated as of December 15, 2017 between Airbus S.A.S. and Delta Air Lines, Inc. (Filed as Exhibit 10.10 to Delta’s Annual Report on Form 10-K for the year ended December 31, 2017).*/**

10.12(b) Amendment No. 2, dated as of July 30, 2020 to Airbus A321neo Aircraft Purchase Agreement, dated as of December 15, 2017 between Delta and Airbus S.A.S. (Filed as Exhibit 10.2(a) to Delta's Quarterly Report on Form 10-Q for the quarter ended September 30, 2020).*/**

10.12(c) Amended and Restated Letter Agreement No. 3, dated as of July 30, 2020, relating to Airbus A321neo Aircraft Purchase Agreement, dated as of December 15, 2017 between Delta and Airbus S.A.S. (Filed as Exhibit 10.2(b) to Delta's Quarterly Report on Form 10-Q for the quarter ended September 30, 2020).*/**

10.13 Framework Agreement, dated as of September 26, 2019, by and between LATAM Airlines Group S.A. and Delta Air Lines, Inc. (Filed as Exhibit 10.1 to Delta Quarterly Report on Form 10-Q for the quarter ended September 30, 2019).*/**

10.14 Delta Air Lines, Inc. Performance Compensation Plan (Filed as Exhibit 10.2 to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2016).*

10.15(a) Delta Air Lines, Inc. Officer and Director Severance Plan, as amended and restated as of June 1, 2016 (Filed as Exhibit 10.3 to Delta's Quarterly Report on Form 10-Q for the quarter ended June 30, 2016).*

10.15(b) Amendment to Delta Air Lines, Inc. Officer and Director Severance Plan, as amended and restated as of June 1, 2016.

10.16 Description of Certain Benefits of Members of the Board of Directors and Executive Officers (Filed as Exhibit 10.3 to Delta's Quarterly Report on Form 10-Q for the quarter ended March 31, 2020).*

10.17(a) Delta Air Lines, Inc. 2018 Long-Term Incentive Program (Filed as Exhibit 10.17 to Delta’s Annual Report on Form 10-K for the year ended December 31, 2017).*

10.17(b) Model Award Agreement for the Delta Air Lines, Inc. 2018 Long-Term Incentive Program (Filed as Exhibit 10.1 to Delta’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018).*

10.18(a) Delta Air Lines, Inc. 2019 Long-Term Incentive Program (Filed as Exhibit 10.16 to Delta’s Annual Report on Form 10-K for the year ended December 31, 2018).*

10.18(b) Model Award Agreement for the Delta Air Lines, Inc. 2019 Long-Term Incentive Program (Filed as Exhibit 10.1 to Delta’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019).*

Delta Air Lines, Inc. 2020 Form 10-K 119

10.19(a) Delta Air Lines, Inc. 2020 Long-Term Incentive Program (Filed as Exhibit 10.14 to Delta’s Annual Report on Form 10-K for the year ended December 31, 2019).*

10.19(b) Model Award Agreement for the Delta Air Lines, Inc. 2020 Long-Term Incentive Program (Filed as Exhibit 10.2 to Delta’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020).*

10.20 Delta Air Lines, Inc. 2020 Management Incentive Plan (Filed as Exhibit 10.16 to Delta’s Annual Report on Form 10-K for the year ended December 31, 2019).*

10.21 Delta Air Lines, Inc. Management Incentive Plan.

10.22 Delta Air Lines, Inc. Restoration Long Term Disability Plan (Filed as Exhibit 10.24 to Delta's Annual Report on Form 10-K for the year ended December 31, 2011).*

10.23 Terms of 2020 Restricted Stock Awards for Non-Employee Directors (filed as Exhibit 10.6 to Delta’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2020).*

21.1 Subsidiaries of the Registrant.

23.1 Consent of Ernst & Young LLP.

31.1 Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer.

31.2 Rule 13a-14(a)/15d-14(a) Certification of Interim Co-Chief Financial Officer.

31.3 Rule 13a-14(a)/15d-14(a) Certification of Interim Co-Chief Financial Officer.

32 Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act 2002.

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104 The cover page from this Annual Report on Form 10-K for the year ended December 31, 2020 formatted in Inline XBRL (included in Exhibit 101)

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• Incorporated by reference.

** Portions of this exhibit have been omitted as confidential information.