Cheapest return flights from Oslo to Keflavik in September from $130

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

23 Sep - 30 Sep Norwegian direct
23 Sep - 25 Sep Norwegian direct
23 Sep - 07 Oct Norwegian direct
23 Sep - 09 Oct Norwegian direct
14 Sep - 30 Sep Norwegian direct
25 Sep - 30 Sep Norwegian direct
21 Sep - 30 Sep Norwegian direct
30 Sep - 07 Oct Norwegian direct
30 Sep - 09 Oct Norwegian direct
14 Sep - 25 Sep Norwegian direct
21 Sep - 25 Sep Norwegian direct
23 Sep - 28 Sep Norwegian direct
25 Sep - 07 Oct Norwegian direct
25 Sep - 09 Oct Norwegian direct
21 Sep - 07 Oct Norwegian direct
21 Sep - 09 Oct Norwegian direct
23 Sep - 05 Oct Norwegian direct
12 Sep - 19 Sep Scandinavian Airlines direct
14 Sep - 28 Sep Norwegian direct
30 Sep - 05 Oct Norwegian direct

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

Skyscanner

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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