This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $878 fare is the cheapest current round-trip from Phoenix (PHX) to LON on FI flight FI7642, departing 2026-05-13 at 09:00 with return on 2026-05-28.

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