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): March 17, 2026

DELTA AIR LINES, INC.

(Exact name of registrant as specified in its charter)

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:

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. ☐

As previously announced, executives of Delta Air Lines, Inc. (“Delta”) are presenting at the J.P. Morgan Industrials Conference on March 17, 2026 at 7:30 a.m. ET. The presentation to be used in conjunction with the event is furnished as Exhibit 99.1 to this Form 8-K.

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In accordance with general instruction B.2 of Form 8-K, the information in this report (including Exhibit 99.1) that is being furnished pursuant to Item 7.01 of Form 8-K shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liabilities of that section, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as expressly set forth in such filing. This report will not be deemed an admission as to the materiality of any information in the report that is required to be disclosed solely by Regulation FD.

(d) Exhibits.

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.

Date: March 17, 2026