Cheapest return flights from Keflavik to Oslo in May from $158

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

Return flights

12 May - 19 May Norwegian direct
21 May - 31 May Norwegian direct
21 May - 24 May Norwegian direct
12 May - 31 May Norwegian direct
12 May - 24 May Norwegian direct
21 May - 04 Jun Norwegian direct
05 May - 12 May Norwegian direct
05 May - 10 May Norwegian direct
05 May - 19 May Norwegian direct
19 May - 31 May Norwegian direct
19 May - 24 May Norwegian direct
21 May - 09 Jun Norwegian direct
21 May - 02 Jun Norwegian direct
12 May - 02 Jun Norwegian direct
19 May - 04 Jun Norwegian direct
28 May - 04 Jun Norwegian direct
19 May - 09 Jun Norwegian direct
19 May - 02 Jun Norwegian direct
21 May - 11 Jun Norwegian direct
28 May - 09 Jun Norwegian direct

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

Powered by

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

Feel free to contact us with any feedback or request another flight research.