Cheapest return flights from Newark to Keflavik in September from 483€

Best time to book flights for Newark (EWR) to Keflavik (KEF) flights at AirHint

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

Return flights

07 Sep - 15 Sep Scandinavian Airlines
02 Sep - 17 Sep Scandinavian Airlines
07 Sep - 14 Sep Scandinavian Airlines
09 Sep - 17 Sep Scandinavian Airlines
22 Sep - 07 Oct Scandinavian Airlines
21 Sep - 06 Oct Icelandair direct
26 Sep - 11 Oct Icelandair direct
20 Sep - 05 Oct Icelandair direct
22 Sep - 07 Oct Icelandair direct
18 Sep - 03 Oct Icelandair direct
27 Sep - 12 Oct Icelandair direct
28 Sep - 13 Oct Icelandair direct
17 Sep - 02 Oct Icelandair direct
24 Sep - 09 Oct Icelandair direct
15 Sep - 23 Sep Scandinavian Airlines
22 Sep - 30 Sep Scandinavian Airlines
01 Sep - 16 Sep Scandinavian Airlines
08 Sep - 23 Sep Scandinavian Airlines
15 Sep - 30 Sep Scandinavian Airlines
08 Sep - 16 Sep Scandinavian Airlines

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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