Frontier (ULCC) - 2021 Q4 - Annual Report

Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-40304 Frontier Group Holdings, Inc. UNITED STATES SECURITIES AND EXCHANGE COMMISSION | Securities registered pursuant to Section 12(b) of the Act: | | | | --- | --- | --- | | Title of each clas ...