Cheapest one-way flights from New York to Keflavik in September from $171

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

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

One-Way flights

24 Sep Fly Play direct
23 Sep Fly Play direct
17 Sep Fly Play direct
01 Sep Fly Play direct
08 Sep Fly Play direct
10 Sep Fly Play direct
16 Sep Fly Play direct
13 Sep Spirit Airlines
27 Sep Spirit Airlines
19 Sep Spirit Airlines

Also check the deals for return 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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