This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $331 fare is the cheapest current round-trip from London (LHR) to FRA on Lufthansa flight LH4231, departing 2026-08-11 at 18:30 with return on 2026-08-13.

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