Cheapest return KEF–HEL flights, September

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

Return flights

23 Sep - 27 Sep KLM
24 Sep - 29 Sep Scandinavian Airlines
02 Sep - 09 Sep Finnair direct
03 Sep - 10 Sep Finnair direct
09 Sep - 16 Sep Finnair direct
17 Sep - 24 Sep Finnair direct
01 Sep - 08 Sep Finnair direct
18 Sep - 25 Sep Finnair direct
22 Sep - 29 Sep Finnair direct
23 Sep - 30 Sep Finnair direct
30 Sep - 07 Oct Icelandair direct
29 Sep - 06 Oct Finnair direct
27 Sep - 04 Oct Icelandair direct
24 Sep - 01 Oct Icelandair direct
25 Sep - 02 Oct Finnair direct
26 Sep - 03 Oct Icelandair direct
28 Sep - 05 Oct Finnair direct

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

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