Executive Change

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549   FORM 8-K   CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934   Date of Report (Date of earliest event reported): December 11, 2025   DELTA AIR LINES, INC.   (Exact name of registrant as specified in its charter)   Delaware   001-05424   58-0218548 (State or other jurisdiction of incorporation)   (Commission File Number)   (IRS Employer Identification No.)   P.O. Box 20706 , Atlanta , Georgia 30320-6001 (Address of principal executive offices)   Registrant’s telephone number, including area code: (404) 715-2600   Registrant’s Web site address: www.delta.com   Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):   ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))   Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol Name of each exchange on which registered Common Stock, par value $0.0001 per share DAL New York Stock Exchange   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR 230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR 240.12b-2). Emerging growth company ☐   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. ☐                   Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.   (b)  Delta Air Lines, Inc. (“Delta”) today announced that Glen W. Hauenstein, Delta’s President, has notified Delta of his decision to retire from the company, effective February 28, 2026. A copy of Delta’s News Hub story announcing Mr. Hauenstein’s retirement is attached to this report as Exhibit 99.1.   Item 9.01 Financial Statements and Exhibits.   (d)  Exhibits.     Exhibit 99.1 Delta News Hub Story titled “Delta President Glen Hauenstein to retire after storied career”         Exhibit 104 The cover page from this Current Report on Form 8-K, formatted in Inline XBRL                       2       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 hereunto duly authorized.       DELTA AIR LINES, INC.               By: /s/ Peter W. Carter                               Peter W. Carter     Executive Vice President – Chief External Affairs Officer Date: December 17, 2025                 3