This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $199 fare is the cheapest current round-trip from Hanoi (HAN) to HKT on FD flight FD645, departing 2026-04-25 at 20:55 with return on 2026-04-26.

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