Cheapest return flights from Newark to Keflavik in September from 279€

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

Return flights

15 Sep - 15 Oct Icelandair direct
22 Sep - 01 Oct Icelandair direct
25 Sep - 01 Oct Icelandair direct
09 Sep - 15 Sep Icelandair direct
02 Sep - 09 Sep Icelandair direct
05 Sep - 12 Sep Icelandair direct
11 Sep - 18 Sep Icelandair direct
14 Sep - 21 Sep Icelandair direct
12 Sep - 14 Sep Icelandair direct
18 Sep - 22 Sep Icelandair direct
11 Sep - 15 Sep Icelandair direct
03 Sep - 08 Sep Icelandair direct
14 Sep - 18 Sep Icelandair direct
21 Sep - 04 Oct Icelandair direct
27 Sep - 11 Oct Austrian Airlines
26 Sep - 04 Oct Lufthansa
28 Sep - 03 Oct United
23 Sep - 07 Oct Lufthansa
28 Sep - 08 Oct TAP
26 Sep - 04 Oct Icelandair direct

Also check the deals for one-way flights from Newark to Keflavik in September.

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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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