Cheapest return BIO–OSL flights, September

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

Return flights

23 Sep - 30 Sep Wizz Air UK
19 Sep - 23 Sep Wizz Air UK
02 Sep - 14 Sep Vueling Airlines
12 Sep - 23 Sep Wizz Air UK
02 Sep - 13 Sep Vueling Airlines
02 Sep - 05 Sep Vueling Airlines
02 Sep - 12 Sep Vueling Airlines
05 Sep - 16 Sep Vueling Airlines
01 Sep - 12 Sep Vueling Airlines
05 Sep - 09 Sep Vueling Airlines
23 Sep - 14 Oct Norwegian direct
26 Sep - 17 Oct Norwegian direct
23 Sep - 07 Oct Norwegian direct
16 Sep - 07 Oct Norwegian direct
30 Sep - 17 Oct Norwegian direct
26 Sep - 14 Oct Norwegian direct
26 Sep - 07 Oct Norwegian direct
30 Sep - 14 Oct Norwegian direct
30 Sep - 07 Oct Norwegian direct
30 Sep - 20 Oct Norwegian

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

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