This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $322 fare is the cheapest current round-trip from Austin (AUS) to SEA on Frontier flight F93645, departing 2026-10-22 at 12:31 with return on 2026-10-26.

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