This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $363 fare is the cheapest current round-trip from Portland (PDX) to BIL on Alaska Airlines flight AS2368, departing 2026-06-19 at 12:13 with return on 2026-06-25.

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