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

Return flights

31 Dec - 17 Jan	Norwegian	direct
29 Dec - 17 Jan	Norwegian	direct
29 Dec - 06 Jan	Norwegian
31 Dec - 07 Jan	Austrian Airlines
30 Dec - 07 Jan	LOT
31 Dec - 14 Jan	Norwegian	direct
29 Dec - 31 Dec	Norwegian	direct
29 Dec - 07 Jan	Ryanair
22 Dec - 10 Jan	Wizz Air
27 Dec - 06 Jan	Norwegian
31 Dec - 07 Jan	Norwegian	direct
25 Dec - 29 Dec	Iberia
22 Dec - 27 Dec	Norwegian	direct
27 Dec - 31 Dec	Norwegian	direct
22 Dec - 29 Dec	Norwegian	direct
22 Dec - 31 Dec	Norwegian	direct
22 Dec - 22 Dec	Lufthansa
24 Dec - 27 Dec	LOT
24 Dec - 28 Dec	LOT
23 Dec - 27 Dec	Lufthansa

Also check the deals for one-way flights from Oslo 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 Oslo to Belgrade in December from 179€

Return flights