This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $117 fare is the cheapest current round-trip from Denver (DEN) to PHX on Frontier flight F91375, departing 2026-09-10 at 07:00 with return on 2026-09-14.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.