Power of Attorney for Barron Elliot Steele

This filing is an exhibit (Exhibit 24) detailing a Power of Attorney granted by Barron Elliot Steele, a director at Frontier Group Holdings, Inc. (ULCC). The Power of Attorney appoints Howard Diamond and Josh Wetzel as attorneys-in-fact. They are authorized to execute and file all necessary Forms 3, 4, and 5 with the SEC and any stock exchange on behalf of Mr. Steele, related to his holdings and transactions in the Company's securities, in accordance with Section 16 of the Securities Exchange Act of 1934. This appointment remains in effect until Mr. Steele is no longer required to file these forms or until it is earlier revoked in writing. The document was signed on June 4, 2026.