This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $1029 fare is the cheapest current round-trip from London (LHR) to BKK on British Airways flight BA850, departing 2026-07-28 at 06:35 with return on 2026-08-22.

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