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

09 Sep - 16 Sep Icelandair direct
06 Sep - 14 Sep Delta direct
22 Sep - 29 Sep Air France direct
16 Sep - 22 Sep Air France direct
20 Sep - 28 Sep Air France direct
13 Sep - 23 Sep Air France direct
10 Sep - 15 Sep Air France direct
15 Sep - 22 Sep Air France direct
06 Sep - 11 Sep Air France direct
16 Sep - 28 Sep Air France direct
24 Sep - 01 Oct Virgin Atlantic direct
26 Sep - 01 Oct Icelandair direct
30 Sep - 05 Oct Icelandair direct
27 Sep - 02 Oct Icelandair direct
28 Sep - 03 Oct Icelandair direct
29 Sep - 04 Oct Icelandair direct
06 Sep - 11 Oct Air France direct

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

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