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

Return flights

08 Dec - 14 Dec	Air Serbia
01 Dec - 14 Dec	Pegasus Airlines
05 Dec - 12 Dec	Wizz Air
31 Dec - 15 Jan	Wizz Air
01 Dec - 15 Dec	Turkish Airlines
10 Dec - 22 Dec	Qatar Airways
06 Dec - 27 Dec	Air France
11 Dec - 23 Dec	Air France
15 Dec - 23 Dec	Turkish Airlines
15 Dec - 29 Dec	Etihad Airways
31 Dec - 10 Jan	Air Serbia
30 Dec - 20 Jan	Air France
25 Dec - 10 Jan	Air Serbia
26 Dec - 10 Jan	Air Serbia
27 Dec - 08 Jan	Air Serbia
29 Dec - 10 Jan	Etihad Airways
21 Dec - 03 Jan	Turkish Airlines
23 Dec - 03 Jan	Turkish Airlines
25 Dec - 03 Jan	Air Serbia
22 Dec - 29 Dec	Air France

Also check the deals for one-way flights from Belgrade 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 Belgrade to Bangkok in December from $676

Return flights