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

Return flights

30 Dec - 09 Jan	Ryanair
31 Dec - 05 Jan	Air Serbia
30 Dec - 04 Jan	LOT
31 Dec - 02 Jan	Ryanair
29 Dec - 31 Dec	Ryanair
25 Dec - 31 Dec	LOT
30 Dec - 31 Dec	Wizz Air Malta
24 Dec - 07 Jan	easyJet
29 Dec - 03 Jan	Ryanair
23 Dec - 01 Jan	LOT
31 Dec - 02 Jan	Air Serbia	direct
25 Dec - 28 Dec	Wizz Air Malta
26 Dec - 05 Jan	easyJet
26 Dec - 29 Dec	Wizz Air
29 Dec - 31 Dec	Air Serbia	direct
23 Dec - 02 Jan	LOT

Also check the deals for one-way flights from Brussels to Belgrade 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 Brussels to Belgrade in December from $296

Return flights