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

Return flights

19 Aug - 27 Aug	Scandinavian Airlines
21 Aug - 31 Aug	Scandinavian Airlines
17 Aug - 27 Aug	Air Europa
17 Aug - 24 Aug	Vueling Airlines
27 Aug - 03 Sep	Vueling Airlines
19 Aug - 28 Aug	Scandinavian Airlines
21 Aug - 24 Aug	Vueling Airlines
24 Aug - 04 Sep	Vueling Airlines
18 Aug - 28 Aug	Vueling Airlines
04 Aug - 11 Aug	Vueling Airlines
23 Aug - 04 Sep	Iberia
05 Aug - 11 Aug	Vueling Airlines
01 Aug - 13 Aug	Vueling Airlines

Also check the deals for one-way flights from Bilbao to Keflavik 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 Keflavik in August from $292

Return flights