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

Return flights

29 Dec - 02 Jan	Air Serbia	direct
22 Dec - 05 Jan	Air Serbia	direct
27 Dec - 29 Dec	Ryanair
30 Dec - 02 Jan	Wizz Air
23 Dec - 06 Jan	Wizz Air
31 Dec - 04 Jan	Wizz Air
30 Dec - 04 Jan	Wizz Air
18 Dec - 20 Dec	Wizz Air

Also check the deals for one-way flights from Banja Luka 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 Banja Luka to Belgrade in December from $154

Return flights