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

Return flights

03 Dec - 16 Dec	Wizz Air
04 Dec - 14 Dec	Air Serbia
01 Dec - 10 Dec	Wizz Air
04 Dec - 17 Dec	Air Serbia
05 Dec - 14 Dec	Austrian Airlines
03 Dec - 23 Dec	Austrian Airlines
03 Dec - 10 Dec	Austrian Airlines
01 Dec - 12 Dec	Austrian Airlines
11 Dec - 24 Dec	Air Serbia
05 Dec - 21 Dec	Austrian Airlines
31 Dec - 15 Jan	Air France
31 Dec - 18 Jan	Wizz Air
30 Dec - 12 Jan	Etihad Airways
30 Dec - 18 Jan	Etihad Airways
31 Dec - 12 Jan	Air France
29 Dec - 24 Jan	Air Serbia
31 Dec - 10 Jan	Wizz Air
24 Dec - 07 Jan	Wizz Air
30 Dec - 15 Jan	Turkish Airlines
30 Dec - 08 Jan	Etihad Airways

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 $673

Return flights