Cheapest return flights from New York to Keflavik in September from 350€

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

Return flights

22 Sep - 29 Sep Air Canada
23 Sep - 30 Sep Air Canada
06 Sep - 13 Sep United
30 Sep - 07 Oct Air Canada
27 Sep - 07 Oct Air Canada
30 Sep - 15 Oct United
22 Sep - 28 Sep United
19 Sep - 26 Sep United
25 Sep - 29 Sep Air Canada
23 Sep - 29 Sep Air Canada
18 Sep - 26 Sep Air Canada
03 Sep - 08 Sep Delta direct
06 Sep - 13 Sep Delta direct
25 Sep - 10 Oct Air Canada
27 Sep - 07 Oct Icelandair direct
25 Sep - 04 Oct Icelandair direct
30 Sep - 15 Oct Icelandair direct
25 Sep - 10 Oct KLM direct

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

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