This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $424 fare is the cheapest current round-trip from Portland (PDX) to STO on FI flight FI664, departing 2026-08-25 at 15:30 with return on 2026-09-01.

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