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

Return flights

12 Dec - 15 Dec	Air Serbia	direct
19 Dec - 22 Dec	Air Serbia	direct
18 Dec - 16 Jan	Wizz Air
17 Dec - 16 Jan	Wizz Air
15 Dec - 17 Dec	Air Serbia
16 Dec - 18 Dec	Wizz Air
13 Dec - 16 Dec	Wizz Air
27 Dec - 01 Jan	Wizz Air

Also check the deals for one-way flights from Belgrade to Banja Luka 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 Banja Luka in December from 104€

Return flights