Cheapest return flights from Helsinki to Keflavik in September from $232

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 September 2025 (see full year).

Return flights

16 Sep - 23 Sep Norwegian
01 Sep - 06 Sep Scandinavian Airlines
05 Sep - 11 Sep Scandinavian Airlines
05 Sep - 11 Sep Finnair direct
09 Sep - 12 Sep Ryanair
09 Sep - 12 Sep Finnair direct
11 Sep - 14 Sep Scandinavian Airlines
21 Sep - 29 Sep Scandinavian Airlines
23 Sep - 28 Sep Scandinavian Airlines
26 Sep - 28 Sep airBaltic

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

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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