Cheapest return flights from Oslo to Keflavik in September from $135

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

Return flights

15 Sep - 22 Sep Norwegian direct
08 Sep - 13 Oct Norwegian direct
20 Sep - 22 Sep Norwegian direct
15 Sep - 27 Sep Norwegian direct
20 Sep - 08 Oct Norwegian direct
01 Sep - 08 Sep Norwegian direct
15 Sep - 01 Oct Norwegian direct
29 Sep - 08 Oct Norwegian direct
20 Sep - 27 Sep Norwegian direct
10 Sep - 22 Sep Norwegian direct
20 Sep - 01 Oct Norwegian direct
10 Sep - 27 Sep Norwegian direct
29 Sep - 01 Oct Norwegian direct
23 Sep - 25 Sep Scandinavian Airlines direct
24 Sep - 28 Sep Icelandair direct
26 Sep - 03 Oct Scandinavian Airlines
26 Sep - 03 Oct Icelandair direct

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