Cheapest return flights from Keflavik to Oslo in May from $131

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

Return flights

21 May - 31 May Norwegian direct
07 May - 19 May Norwegian direct
12 May - 19 May Norwegian direct
12 May - 31 May Norwegian direct
05 May - 19 May Norwegian direct
26 May - 31 May Norwegian direct
12 May - 02 Jun Norwegian direct
21 May - 02 Jun Norwegian direct
21 May - 04 Jun Norwegian direct
26 May - 02 Jun Norwegian direct
05 May - 07 May Norwegian direct
26 May - 04 Jun Norwegian direct
07 May - 17 May Norwegian direct
12 May - 17 May Norwegian direct
05 May - 17 May Norwegian direct
31 May - 02 Jun Norwegian direct
31 May - 04 Jun Norwegian direct
26 May - 16 Jun Norwegian direct
31 May - 16 Jun Norwegian direct
17 May - 02 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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