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

Return flights

10 Jul - 11 Jul	Finnair	direct
11 Jul - 18 Jul	Finnair
18 Jul - 24 Jul	Finnair
11 Jul - 18 Jul	Finnair	direct
11 Jul - 14 Jul	Finnair
28 Jul - 05 Aug	Finnair
20 Jul - 27 Jul	Finnair
11 Jul - 14 Jul	Finnair	direct

Also check the deals for one-way flights from Keflavik to Helsinki 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 Keflavik to Helsinki in July from $470

Return flights