Cheapest return flights from Keflavik to Copenhagen in September from $151

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

Return flights

01 Sep - 10 Sep Fly Play direct
09 Sep - 10 Sep Fly Play direct
02 Sep - 05 Sep Fly Play direct
07 Sep - 10 Sep Fly Play direct
01 Sep - 04 Sep Fly Play direct
29 Sep - 02 Oct Fly Play direct
29 Sep - 10 Oct Fly Play direct
09 Sep - 17 Sep Fly Play direct
21 Sep - 24 Sep Fly Play direct
22 Sep - 25 Sep Fly Play direct
06 Sep - 09 Sep Fly Play direct
15 Sep - 18 Sep Fly Play direct
20 Sep - 03 Oct Fly Play direct
09 Sep - 03 Oct Fly Play direct
25 Sep - 01 Oct Fly Play direct
28 Sep - 01 Oct Fly Play direct
25 Sep - 05 Oct Wizz Air
30 Sep - 03 Oct Icelandair direct
25 Sep - 05 Oct Icelandair direct

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

Book a cheap hotel in Copenhagen

Cheap car rent in Copenhagen

Feel free to contact us with any feedback or request another flight research.