AirHint found the following cheapest return flights from Bucharest (OTP) to Bangkok (BKK) in December 2025 (see full year).

Return flights

01 Dec - 07 Dec	Norwegian
10 Dec - 24 Dec	Wizz Air Malta
02 Dec - 13 Dec	Wizz Air Malta
11 Dec - 27 Dec	Wizz Air Malta
13 Dec - 27 Dec	Ryanair
18 Dec - 18 Jan	flydubai
14 Dec - 01 Jan	Ryanair
15 Dec - 15 Jan	TAROM
02 Dec - 16 Dec	SWISS
03 Dec - 17 Dec	Lufthansa
15 Dec - 05 Jan	TAROM
06 Dec - 21 Dec	Turkish Airlines
09 Dec - 22 Dec	Turkish Airlines
02 Dec - 15 Dec	Turkish Airlines
19 Dec - 17 Jan	Pegasus Airlines
18 Dec - 08 Jan	Turkish Airlines
24 Dec - 17 Jan	TAROM
09 Dec - 31 Jan	Turkish Airlines
19 Dec - 07 Jan	Ryanair
17 Dec - 01 Jan	Pegasus Airlines

Also check the deals for one-way flights from Bucharest to Bangkok in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Bucharest to Bangkok in December from 575€

Return flights