Power of Attorney for Jeffrey Mathew at Frontier Group Holdings, Inc.

Jeffrey Mathew, SVP and Chief Information Officer of Frontier Group Holdings, Inc., has executed a Power of Attorney document. This document appoints Howard Diamond and Josh Wetzel as his attorneys-in-fact, granting them the authority to execute and file Forms 3, 4, and 5 on his behalf in compliance with Section 16 of the Securities Exchange Act of 1934. The Power of Attorney remains in effect until Mathew is no longer required to file these forms or until he revokes it in writing. The document was executed on September 22, 2025.