Cheapest return NYC–KEF flights, September

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

Return flights

25 Sep - 02 Oct Icelandair direct
26 Sep - 03 Oct Icelandair direct
09 Sep - 16 Sep Icelandair direct
17 Sep - 24 Sep Icelandair direct
21 Sep - 28 Sep Icelandair direct
10 Sep - 13 Sep Icelandair direct
10 Sep - 14 Sep Icelandair direct
11 Sep - 16 Sep Air Canada
13 Sep - 23 Sep Icelandair direct
14 Sep - 24 Sep Air France direct
06 Sep - 12 Sep Icelandair direct
19 Sep - 25 Sep Delta direct
13 Sep - 23 Oct Icelandair direct
26 Sep - 05 Oct Icelandair direct
30 Sep - 05 Oct Icelandair direct
28 Sep - 01 Oct Air France direct

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

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