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

Return flights

21 Aug - 29 Aug	Wizz Air
21 Aug - 27 Aug	Wizz Air
21 Aug - 28 Aug	Wizz Air
21 Aug - 26 Aug	Lufthansa
23 Aug - 27 Aug	Wizz Air
31 Aug - 09 Sep	Wizz Air
23 Aug - 30 Aug	Wizz Air
19 Aug - 26 Aug	Lufthansa
19 Aug - 22 Aug	Wizz Air
19 Aug - 21 Aug	Wizz Air
22 Aug - 24 Aug	Wizz Air Malta
31 Aug - 14 Sep	Vueling Airlines
31 Aug - 07 Sep	Vueling Airlines

Also check the deals for one-way flights from Keflavik to Stockholm 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 Keflavik to Stockholm in August from 182€

Return flights