Cheapest return flights from Oslo to Brussels in September from $136

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

Return flights

16 Sep - 23 Sep Norwegian direct
30 Sep - 07 Oct Norwegian direct
23 Sep - 07 Oct Norwegian direct
23 Sep - 26 Sep Norwegian direct
16 Sep - 30 Sep Norwegian direct
16 Sep - 26 Sep Norwegian direct
30 Sep - 17 Oct Norwegian direct
30 Sep - 14 Oct Norwegian direct
30 Sep - 10 Oct Norwegian direct
23 Sep - 10 Oct Norwegian direct
30 Sep - 03 Oct Norwegian direct
23 Sep - 24 Sep Norwegian
11 Sep - 11 Sep Ryanair
09 Sep - 23 Sep Norwegian direct
21 Sep - 23 Sep Norwegian direct
16 Sep - 03 Oct Norwegian direct
23 Sep - 03 Oct Norwegian direct
21 Sep - 07 Oct Norwegian direct
22 Sep - 29 Sep Brussels Airlines direct
23 Sep - 25 Sep Brussels Airlines direct

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

Skyscanner

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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