Cheapest return flights from Oslo to Brussels in September from $120

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

Return flights

09 Sep - 23 Sep Norwegian direct
09 Sep - 12 Sep Norwegian direct
23 Sep - 10 Oct Norwegian direct
23 Sep - 30 Sep Norwegian direct
09 Sep - 16 Sep Norwegian direct
09 Sep - 19 Sep Norwegian direct
02 Sep - 12 Sep Norwegian direct
14 Sep - 23 Sep Norwegian direct
07 Sep - 23 Sep Norwegian direct
07 Sep - 12 Sep Norwegian direct
21 Sep - 23 Sep Norwegian direct
21 Sep - 10 Oct Norwegian direct
24 Sep - 01 Oct Scandinavian Airlines direct
29 Sep - 01 Oct Scandinavian Airlines direct
23 Sep - 12 Oct Norwegian direct
29 Sep - 06 Oct Scandinavian Airlines direct
28 Sep - 10 Oct Norwegian direct
28 Sep - 17 Oct Norwegian direct
26 Sep - 03 Oct Scandinavian Airlines
20 Sep - 10 Oct Vueling Airlines

Also check the deals for one-way flights from Oslo to Brussels in September.

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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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