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

Return flights

16 Dec - 19 Dec	Ryanair
10 Dec - 17 Dec	easyJet
14 Dec - 18 Dec	easyJet
19 Dec - 27 Dec	easyJet
22 Dec - 29 Dec	easyJet
19 Dec - 31 Dec	Ryanair
21 Dec - 28 Dec	Ryanair
17 Dec - 19 Jan	easyJet
19 Dec - 26 Dec	Ryanair
26 Dec - 29 Dec	easyJet
20 Dec - 28 Dec	Ryanair
17 Dec - 02 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
19 Dec - 19 Jan	Ryanair
17 Dec - 02 Jan	Air Serbia	direct
24 Dec - 02 Jan	Air Serbia	direct
29 Dec - 02 Jan	Air Serbia	direct
30 Dec - 03 Jan	Ryanair

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 $122

Return flights