Cheapest return flights from New York to Keflavik in December from $402

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

Return flights

05 Dec - 09 Dec Lufthansa
05 Dec - 13 Dec Lufthansa
05 Dec - 12 Dec Lufthansa
07 Dec - 13 Dec Spirit Airlines
08 Dec - 13 Dec Lufthansa
09 Dec - 16 Dec Scandinavian Airlines
31 Dec - 08 Jan Lufthansa
10 Dec - 17 Dec Scandinavian Airlines
29 Dec - 10 Jan Icelandair direct
08 Dec - 15 Dec Scandinavian Airlines
09 Dec - 15 Dec Scandinavian Airlines
10 Dec - 14 Dec Scandinavian Airlines
30 Dec - 08 Jan Finnair
30 Dec - 06 Jan Scandinavian Airlines
31 Dec - 08 Jan Icelandair direct
30 Dec - 08 Jan Icelandair direct
23 Dec - 10 Jan Scandinavian Airlines
28 Dec - 09 Jan Icelandair direct
31 Dec - 07 Jan Icelandair direct
29 Dec - 06 Jan Scandinavian Airlines

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

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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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