This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $328 fare is the cheapest current round-trip from Phoenix (PHX) to WAS on Frontier flight F91086, departing 2026-07-01 at 00:35 with return on 2026-07-09.

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