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

One-Way flights

03 Apr	Scandinavian Airlines	direct
27 Apr	Scandinavian Airlines	direct
13 Apr	Scandinavian Airlines	direct
14 Apr	Scandinavian Airlines	direct
20 Apr	Scandinavian Airlines	direct
06 Apr	Scandinavian Airlines
05 Apr	Icelandair	direct
12 Apr	Icelandair	direct
16 Apr	Icelandair	direct
30 Apr	Scandinavian Airlines	direct

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

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 April from 59€

One-Way flights