This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $198 fare is the cheapest current round-trip from Bangkok (BKK) to NHA on FD flight FD646, departing 2026-07-09 at 08:00 with return on 2026-07-23.

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