This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $131 fare is the cheapest current round-trip from Bangkok (DMK) to NHA on FD flight FD646, departing 2026-09-20 at 08:00 with return on 2026-09-30.

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