Cheapest return flights from Keflavik to Oslo in September from $118

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

Return flights

03 Sep - 08 Sep Norwegian direct
03 Sep - 22 Sep Norwegian direct
22 Sep - 06 Oct Norwegian direct
22 Sep - 11 Oct Norwegian direct
04 Sep - 08 Sep Scandinavian Airlines direct
13 Sep - 22 Sep Norwegian direct

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

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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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