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

Return flights

26 Aug - 31 Aug	Norwegian
26 Aug - 29 Aug	Norwegian	direct
11 Aug - 19 Aug	Vueling Airlines
08 Aug - 11 Aug	Air Europa
11 Aug - 19 Aug	Norwegian	direct
03 Aug - 08 Aug	Wizz Air UK
19 Aug - 29 Aug	Norwegian	direct
08 Aug - 29 Aug	Air Europa
19 Aug - 19 Aug	Norwegian
08 Aug - 19 Aug	Norwegian	direct

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

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 Bilbao to Oslo in August from 114€

Return flights