X0609 4 2026-06-15 false 0001670076 Frontier Group Holdings, Inc. ULCC 0002139341 Steele Barron Elliot false C/O FRONTIER GROUP HOLDINGS, INC 4545 AIRPORT WAY DENVER CO 80239 true false false false false Deferred Stock Units 2026-06-15 4 A false 22284.00 0.00 A Common Stock 22284.00 22284.00 D Each Deferred Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Deferred Stock Units have no expiration date. The Deferred Stock Units will vest in full on the earlier of May 14, 2027 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 and will be settled in shares of the Issuer's Common Stock either (i) on a date selected by the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Program (the "Plan"), or (ii) as otherwise provided by the Plan. /s/ Howard Diamond, as Attorney-in-fact for Barron Elliot Steele 2026-06-17