Cheapest return flights from New York to Keflavik in September from $359

AirHint found the following cheapest return flights from New York (JFK) to Keflavik (KEF) in September 2025 (see full year).

Return flights

21 Sep - 03 Oct Icelandair direct
27 Sep - 07 Oct Icelandair direct
24 Sep - 01 Oct Icelandair direct
29 Sep - 03 Oct Icelandair direct
22 Sep - 03 Oct Icelandair direct
22 Sep - 30 Sep Icelandair direct
24 Sep - 30 Sep Icelandair direct
23 Sep - 30 Sep Icelandair direct
26 Sep - 02 Oct Icelandair direct
22 Sep - 01 Oct Icelandair direct
26 Sep - 03 Oct Icelandair direct
22 Sep - 26 Sep Icelandair direct
30 Sep - 08 Oct Icelandair direct
25 Sep - 02 Oct Icelandair direct
25 Sep - 30 Sep Icelandair direct
19 Sep - 21 Sep Air Canada
19 Sep - 22 Sep Air Canada
19 Sep - 27 Sep Air Canada
21 Sep - 28 Sep Air France direct
19 Sep - 24 Sep Air Canada

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

Skyscanner

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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