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

Return flights

07 Oct - 09 Oct	Wizz Air
30 Oct - 04 Nov	Scandinavian Airlines
30 Oct - 05 Nov	Scandinavian Airlines
02 Oct - 06 Oct	Wizz Air
15 Oct - 21 Oct	Wizz Air
31 Oct - 07 Nov	Wizz Air Malta
31 Oct - 05 Nov	Wizz Air Malta
30 Oct - 04 Nov	Icelandair	direct
31 Oct - 07 Nov	Icelandair	direct
30 Oct - 05 Nov	Icelandair	direct
31 Oct - 05 Nov	Icelandair	direct
10 Oct - 27 Oct	Scandinavian Airlines
08 Oct - 12 Oct	Wizz Air
02 Oct - 06 Oct	Finnair	direct
08 Oct - 12 Oct	Finnair	direct

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

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 Helsinki in October from 209€

Return flights