This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $163 fare is the cheapest current round-trip from Hanoi (HAN) to BKK on FD flight FD643, departing 2026-06-17 at 09:05 with return on 2026-06-17.

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