Cheapest return flights from Helsinki to Keflavik in August from $257

Best time to book flights for Helsinki (HEL) to Keflavik (KEF) flights at AirHint

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

Return flights

29 Aug - 01 Sep airBaltic
27 Aug - 02 Sep airBaltic
11 Aug - 15 Aug airBaltic
25 Aug - 29 Aug Scandinavian Airlines
25 Aug - 29 Aug Finnair direct
21 Aug - 24 Aug Finnair direct
18 Aug - 27 Aug Scandinavian Airlines
23 Aug - 30 Aug Icelandair direct
29 Aug - 01 Sep Icelandair direct
12 Aug - 18 Aug Norwegian
01 Aug - 05 Aug airBaltic
01 Aug - 05 Aug Finnair direct
23 Aug - 27 Aug Lufthansa

Also check the deals for one-way flights from Helsinki to Keflavik in August.

Skyscanner

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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