AirHint found the following cheapest one-way flights from Oslo (OSL) to Keflavik (KEF) in May 2026 (see full year).

One-Way flights

19 May	Norwegian	direct
12 May	Norwegian	direct
29 May	Scandinavian Airlines	direct
27 May	Scandinavian Airlines	direct
09 May	Scandinavian Airlines	direct
06 May	Scandinavian Airlines	direct
11 May	Scandinavian Airlines	direct
30 May	Scandinavian Airlines	direct
10 May	Scandinavian Airlines	direct
31 May	Scandinavian Airlines

Also check the deals for return flights from Oslo to Keflavik in May.

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 May from $60

One-Way flights