This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $145 fare is the cheapest current round-trip from Seattle (SEA) to PHX on Frontier flight F92408, departing 2026-08-19 at 20:53 with return on 2026-08-22.

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