This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $963 fare is the cheapest current round-trip from San Jose (SJC) to LON on Alaska Airlines flight AS659, departing 2026-08-29 at 13:44 with return on 2026-09-03.

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