AirHint found the following cheapest return flights from Bangkok (BKK) to Bucharest (OTP) in December 2025 (see full year).
Return flights
| 06 Dec - 30 Dec | Norse Atlantic Airways | ||
| 03 Dec - 18 Dec | Norse Atlantic Airways (UK) | ||
| 29 Dec - 05 Jan | Air France | ||
| 30 Dec - 05 Jan | Qatar Airways | ||
| 27 Dec - 04 Jan | Austrian Airlines |
Also check the deals for one-way flights from Bangkok to Bucharest in December.
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