This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $356 fare is the cheapest current round-trip from San Jose (SJC) to STL on Alaska Airlines flight AS754, departing 2026-09-11 at 07:02 with return on 2026-09-12.

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