Cheapest one-way flights from Newark to Keflavik in September from 145€

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

One-Way flights

10 Sep Spirit Airlines
09 Sep Spirit Airlines
03 Sep Spirit Airlines
08 Sep Spirit Airlines
02 Sep Spirit Airlines
28 Sep FrenchBee
05 Sep Spirit Airlines
24 Sep FrenchBee
26 Sep Spirit Airlines
07 Sep Air Canada

Also check the deals for return flights from Newark 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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