Cheapest return flights from New York to Keflavik in September from $396

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

Return flights

02 Sep - 09 Sep Icelandair direct
16 Sep - 23 Sep Icelandair direct
22 Sep - 29 Sep Icelandair direct
09 Sep - 16 Sep Icelandair direct
23 Sep - 30 Sep Icelandair direct
11 Sep - 21 Sep Icelandair direct
15 Sep - 23 Sep Air France direct
16 Sep - 28 Sep Air France direct
18 Sep - 21 Sep Icelandair direct
08 Sep - 21 Sep Delta direct
26 Sep - 04 Oct KLM
30 Sep - 07 Oct Icelandair direct

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

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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.

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