Cheapest return flights from New York to Keflavik in September from 344€

Best time to book flights for New York (JFK) to Keflavik (KEF) flights at AirHint

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

Return flights

25 Sep - 02 Oct Delta direct
28 Sep - 05 Oct Delta direct
30 Sep - 07 Oct Delta direct
05 Sep - 12 Sep Delta direct
22 Sep - 29 Sep Virgin Atlantic direct
23 Sep - 30 Sep Icelandair direct
26 Sep - 03 Oct Icelandair direct
27 Sep - 04 Oct Icelandair direct
01 Sep - 11 Sep Icelandair direct
01 Sep - 09 Sep Delta direct
17 Sep - 24 Sep Delta direct
08 Sep - 12 Sep Icelandair direct
21 Sep - 28 Sep Icelandair direct
09 Sep - 13 Sep Icelandair direct
02 Sep - 10 Sep Icelandair direct
24 Sep - 02 Oct Icelandair direct
26 Sep - 04 Oct Icelandair direct
24 Sep - 01 Oct Icelandair direct
29 Sep - 05 Oct Icelandair direct
30 Sep - 08 Oct Icelandair direct

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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