Cheapest return flights from Newark to Keflavik in December from 304€

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

Return flights

03 Dec - 10 Dec Icelandair direct
02 Dec - 09 Dec Icelandair direct
07 Dec - 11 Dec Icelandair direct
02 Dec - 11 Dec Icelandair direct
15 Dec - 10 Jan Icelandair direct
03 Dec - 08 Dec Spirit Airlines
04 Dec - 08 Dec Spirit Airlines
04 Dec - 11 Dec Icelandair direct
14 Dec - 18 Dec Icelandair direct
06 Dec - 11 Dec Spirit Airlines
01 Dec - 08 Dec Icelandair direct
31 Dec - 07 Jan Icelandair direct
29 Dec - 11 Jan Lufthansa
17 Dec - 10 Jan Icelandair direct
23 Dec - 17 Jan Icelandair direct
29 Dec - 07 Jan Icelandair direct
29 Dec - 08 Jan Icelandair direct
29 Dec - 11 Jan Icelandair direct
29 Dec - 05 Jan Icelandair direct
30 Dec - 06 Jan Icelandair direct

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

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