Cheapest return flights from New York to Keflavik in September from $284

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

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

Return flights

01 Sep - 15 Sep Fly Play direct
16 Sep - 23 Sep Fly Play direct
08 Sep - 15 Sep Fly Play direct
06 Sep - 14 Sep Fly Play direct
17 Sep - 21 Sep Fly Play direct
24 Sep - 01 Oct Icelandair direct
10 Sep - 14 Sep Fly Play direct
02 Sep - 09 Sep Fly Play direct
20 Sep - 25 Sep Icelandair direct
22 Sep - 26 Sep Icelandair direct
17 Sep - 24 Sep Icelandair direct
30 Sep - 17 Oct Icelandair direct
25 Sep - 13 Oct Icelandair direct
28 Sep - 09 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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