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

Return flights

03 Dec - 07 Dec	Wizz Air
04 Dec - 14 Dec	Wizz Air
02 Dec - 06 Dec	Ryanair
06 Dec - 08 Dec	Ryanair
04 Dec - 09 Dec	Wizz Air
15 Dec - 23 Dec	Wizz Air
11 Dec - 15 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
11 Dec - 16 Dec	Ryanair
11 Dec - 13 Dec	Ryanair
18 Dec - 08 Jan	Ryanair
30 Dec - 01 Jan	Ryanair
29 Dec - 05 Jan	Ryanair
29 Dec - 04 Jan	Ryanair
22 Dec - 05 Jan	Scandinavian Airlines
31 Dec - 04 Jan	Ryanair
28 Dec - 08 Jan	Scandinavian Airlines
28 Dec - 11 Jan	Scandinavian Airlines
22 Dec - 04 Jan	Scandinavian Airlines
22 Dec - 02 Jan	Scandinavian Airlines

Also check the deals for one-way flights from Brussels to Oslo 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 Oslo in December from $98

Return flights