Cheapest return flights from Keflavik to Oslo in May from $116

Best time to book flights for Keflavik (KEF) to Oslo (OSL) flights at AirHint

AirHint found the following cheapest return flights from Keflavik (KEF) to Oslo (OSL) in May 2025 (see full year).

Return flights

06 May - 11 May Norwegian direct
06 May - 15 May Norwegian direct
13 May - 15 May Norwegian direct
27 May - 01 Jun Norwegian direct
29 May - 09 Jun Scandinavian Airlines direct
20 May - 01 Jun Norwegian direct
06 May - 18 May Norwegian direct
27 May - 03 Jun Norwegian direct
20 May - 03 Jun Norwegian direct
23 May - 25 May Scandinavian Airlines direct
01 May - 04 May Scandinavian Airlines direct
13 May - 14 May Norwegian direct
29 May - 08 Jun Scandinavian Airlines direct
01 May - 11 May Norwegian direct
06 May - 20 May Norwegian direct
06 May - 08 May Norwegian direct
13 May - 01 Jun Norwegian direct
20 May - 05 Jun Norwegian direct
20 May - 08 Jun Norwegian direct
27 May - 05 Jun Norwegian direct

Also check the deals for one-way flights from Keflavik to Oslo in May.

Skyscanner

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.

Book a cheap hotel in Oslo

Cheap car rent in Oslo