Cheapest return flights from Helsinki to Keflavik in September from $243

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

Return flights

30 Sep - 08 Oct Norwegian Air Sweden AOC
09 Sep - 16 Sep Norwegian
02 Sep - 09 Sep Norwegian
25 Sep - 30 Sep Scandinavian Airlines
28 Sep - 03 Oct airBaltic
16 Sep - 23 Sep Scandinavian Airlines
23 Sep - 30 Sep Norwegian
26 Sep - 29 Sep Scandinavian Airlines
03 Sep - 08 Sep airBaltic
25 Sep - 29 Sep Scandinavian Airlines
04 Sep - 10 Sep Scandinavian Airlines
08 Sep - 10 Sep Scandinavian Airlines
30 Sep - 13 Oct Scandinavian Airlines
29 Sep - 08 Oct Scandinavian Airlines
26 Sep - 11 Oct Austrian Airlines

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

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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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