AirHint found the following cheapest one-way flights from Oslo (OSL) to Keflavik (KEF) in July 2025 (see full year).

One-Way flights

24 Jul	Scandinavian Airlines
30 Jul	Scandinavian Airlines
27 Jul	Scandinavian Airlines
26 Jul	Scandinavian Airlines
23 Jul	Scandinavian Airlines
24 Jul	Norwegian	direct
09 Jul	Wizz Air
31 Jul	Norwegian	direct
28 Jul	Scandinavian Airlines	direct
23 Jul	Scandinavian Airlines	direct

Also check the deals for return flights from Oslo 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 one-way flights from Oslo to Keflavik in July from $75

One-Way flights