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

Return flights

25 Aug - 06 Sep	Wizz Air UK
23 Aug - 03 Sep	Air Europa
25 Aug - 11 Sep	Wizz Air UK
25 Aug - 05 Sep	Wizz Air UK
18 Aug - 26 Aug	Vueling Airlines
21 Aug - 04 Sep	Air Europa
17 Aug - 29 Aug	Vueling Airlines
01 Aug - 11 Aug	Wizz Air UK
18 Aug - 28 Aug	Vueling Airlines
17 Aug - 30 Aug	Vueling Airlines
13 Aug - 23 Aug	Air Europa
14 Aug - 20 Aug	Air Europa
15 Aug - 22 Aug	Air Europa
15 Aug - 29 Aug	Air Europa
13 Aug - 22 Aug	Air Europa
25 Aug - 04 Sep	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 263€

Return flights