This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $1534 fare is the cheapest current round-trip from San Jose (SJC) to LON on United Airlines flight UA663, departing 2026-06-22 at 14:32 with return on 2026-06-29.

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