This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $685 fare is the cheapest current round-trip from Boston (BOS) to PAR on Lufthansa flight LH423, departing 2026-08-14 at 17:45 with return on 2026-08-28.

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