AirHint found the following cheapest return flights from Geneva (GVA) to Keflavik (KEF) in August 2025 (see full year).

Return flights

29 Aug - 02 Sep	easyJet
28 Aug - 05 Sep	easyJet
28 Aug - 04 Sep	easyJet
31 Aug - 05 Sep	easyJet
27 Aug - 31 Aug	Scandinavian Airlines
29 Aug - 06 Sep	Scandinavian Airlines
21 Aug - 29 Aug	SWISS
26 Aug - 05 Sep	easyJet
22 Aug - 28 Aug	Scandinavian Airlines
30 Aug - 04 Sep	Aer Lingus
24 Aug - 31 Aug	Scandinavian Airlines
21 Aug - 27 Aug	easyJet
22 Aug - 29 Aug	Lufthansa
19 Aug - 31 Aug	easyJet
14 Aug - 22 Aug	Norwegian
31 Aug - 06 Sep	easyJet
30 Aug - 06 Sep	Aer Lingus
18 Aug - 28 Aug	SWISS
30 Aug - 13 Sep	Aer Lingus
23 Aug - 30 Aug	Aer Lingus

Also check the deals for one-way flights from Geneva 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 Geneva to Keflavik in August from 258€

Return flights