Cheapest one-way flights from New York to Keflavik in September from $254

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

One-Way flights

13 Sep Spirit Airlines
09 Sep Spirit Airlines
25 Sep Spirit Airlines
22 Sep Spirit Airlines
01 Sep Spirit Airlines
14 Sep Air France
30 Sep United
15 Sep Air France
21 Sep Air France
29 Sep Scandinavian 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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