X0508 4 2024-05-23 false 0001670076 Frontier Group Holdings, Inc. ULCC 0001853369 Broderick Andrew S. C/O FRONTIER GROUP HOLDINGS, INC. 4545 AIRPORT WAY DENVER CO 80239 true false false false false Common Stock 2024-05-23 4 M false 17722.00 A 823486.00 D Restricted Stock Units 2024-05-23 4 M false 17722.00 0.00 D Common Stock 17722.00 0.00 D Restricted Stock Units 2024-05-23 4 A false 24955.00 0.00 A Common Stock 24955.00 24955.00 D Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date. Includes shares received pursuant to a pro-rata distribution in-kind by Indigo Frontier Holdings Company, LLC to its members for no consideration. The Restricted Stock Units have fully vested as of May 23, 2024. The Restricted Stock Units will vest in full on the earlier of May 23, 2025 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date. /s/ Howard Diamond, as Attorney-in-fact for Andrew S. Broderick 2024-05-28