Cheapest return flights from Oslo to Keflavik in September from $141

Best time to book flights for Oslo (OSL) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Oslo (OSL) to Keflavik (KEF) in September 2025 (see full year).

Return flights

04 Sep - 23 Sep Norwegian direct
11 Sep - 30 Sep Norwegian direct
11 Sep - 16 Sep Norwegian direct
12 Sep - 20 Sep Scandinavian Airlines direct
10 Sep - 13 Sep Scandinavian Airlines direct
21 Sep - 24 Sep Scandinavian Airlines direct
24 Sep - 27 Sep Scandinavian Airlines direct
02 Sep - 16 Sep Norwegian direct
04 Sep - 16 Sep Norwegian direct
07 Sep - 23 Sep Norwegian direct
28 Sep - 09 Oct Scandinavian Airlines
23 Sep - 07 Oct Norwegian direct
23 Sep - 09 Oct Norwegian direct
28 Sep - 06 Oct Scandinavian Airlines
28 Sep - 09 Oct Scandinavian Airlines direct
18 Sep - 07 Oct Norwegian direct
21 Sep - 07 Oct Norwegian direct
21 Sep - 09 Oct Norwegian direct
25 Sep - 07 Oct Norwegian direct
25 Sep - 09 Oct Norwegian 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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