Cheapest return flights from Copenhagen to Keflavik in September from $173

Best time to book flights for Copenhagen (CPH) to Keflavik (KEF) flights at AirHint

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

Return flights

24 Sep - 06 Oct Fly Play direct
04 Sep - 07 Sep Fly Play direct
05 Sep - 07 Sep Fly Play direct
12 Sep - 17 Sep Fly Play direct
09 Sep - 16 Sep Fly Play direct
02 Sep - 09 Sep Scandinavian Airlines
12 Sep - 14 Sep Scandinavian Airlines
02 Sep - 08 Sep Fly Play direct
02 Sep - 09 Sep Fly Play direct
12 Sep - 14 Sep Fly Play direct
26 Sep - 28 Sep Fly Play direct
30 Sep - 05 Oct Fly Play direct

Also check the deals for one-way flights from Copenhagen 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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