Cheapest return KEF–OSL flights, May

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

Return flights

13 May - 19 May Wizz Air
22 May - 25 May Wizz Air
15 May - 17 May Wizz Air
14 May - 19 May Wizz Air
19 May - 26 May Norwegian direct
19 May - 28 May Norwegian direct
22 May - 31 May Wizz Air
18 May - 22 May Wizz Air
22 May - 24 May Wizz Air
14 May - 17 May Wizz Air
19 May - 04 Jun Norwegian direct
19 May - 09 Jun Norwegian direct
26 May - 04 Jun Norwegian direct
26 May - 11 Jun Norwegian direct
24 May - 04 Jun Norwegian direct
21 May - 04 Jun Norwegian direct
26 May - 09 Jun Norwegian direct
21 May - 11 Jun Norwegian direct
31 May - 04 Jun Norwegian direct
24 May - 11 Jun Norwegian direct

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

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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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