Cheapest return flights from Newark to Keflavik in September from 315€

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

Return flights

14 Sep - 21 Sep Icelandair direct
10 Sep - 17 Sep Air Canada
26 Sep - 01 Oct Icelandair direct
16 Sep - 16 Oct Icelandair direct
07 Sep - 14 Sep Air Canada
13 Sep - 20 Sep Air Canada
02 Sep - 17 Sep United
02 Sep - 09 Sep United direct
07 Sep - 16 Sep United direct
01 Sep - 08 Sep Air France
04 Sep - 09 Sep Icelandair direct
03 Sep - 12 Sep Icelandair direct
29 Sep - 03 Oct Lufthansa

Also check the deals for one-way 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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