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

Return flights

30 Jul - 06 Aug	Finnair
28 Jul - 07 Aug	Finnair
30 Jul - 06 Aug	Finnair	direct
29 Jul - 31 Jul	Scandinavian Airlines
29 Jul - 03 Aug	Scandinavian Airlines
28 Jul - 04 Aug	Finnair	direct
27 Jul - 03 Aug	Scandinavian Airlines
27 Jul - 01 Aug	Finnair	direct
28 Jul - 07 Aug	Finnair	direct
27 Jul - 31 Jul	Finnair	direct
31 Jul - 05 Aug	Finnair
27 Jul - 03 Aug	Finnair	direct
29 Jul - 31 Jul	Finnair	direct

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

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 Helsinki to Keflavik in July from 360€

Return flights