Cheapest one-way flights from New York to Keflavik in September from $113

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

One-Way flights

01 Sep Fly Play direct
02 Sep Spirit Airlines
10 Sep Spirit Airlines
08 Sep Spirit Airlines
15 Sep Spirit Airlines
13 Sep Spirit Airlines
05 Sep Spirit Airlines
12 Sep Spirit Airlines
22 Sep Norse Atlantic Airways (UK)
04 Sep FrenchBee

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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