Cheapest return OSL–BRU flights, September

AirHint found the following cheapest return flights from Oslo (OSL) to Brussels (BRU) in September 2026 (see full year).

Return flights

11 Sep - 15 Sep Ryanair
06 Sep - 17 Sep Norwegian direct
13 Sep - 17 Sep Norwegian direct
13 Sep - 27 Sep Norwegian direct
12 Sep - 14 Sep Brussels Airlines direct
21 Sep - 28 Sep Brussels Airlines direct
01 Sep - 08 Sep Brussels Airlines direct
02 Sep - 09 Sep Brussels Airlines direct
07 Sep - 14 Sep Brussels Airlines direct
08 Sep - 15 Sep Brussels Airlines direct
29 Sep - 06 Oct Brussels Airlines direct
30 Sep - 07 Oct Brussels Airlines direct
29 Sep - 01 Oct Scandinavian Airlines direct
28 Sep - 05 Oct Brussels Airlines direct
24 Sep - 01 Oct Brussels Airlines direct
30 Sep - 02 Oct Scandinavian Airlines
27 Sep - 04 Oct Scandinavian Airlines
25 Sep - 02 Oct Scandinavian Airlines
30 Sep - 02 Oct Brussels Airlines direct
25 Sep - 02 Oct Brussels Airlines direct

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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