Cheapest return flights from New York to Keflavik in December from $625

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

Return flights

10 Dec - 18 Dec United
05 Dec - 13 Dec American Airlines
01 Dec - 05 Dec Porter Airlines (Canada) Ltd
23 Dec - 28 Dec Porter Airlines (Canada) Ltd
08 Dec - 14 Dec Porter Airlines (Canada) Ltd
10 Dec - 17 Dec Porter Airlines (Canada) Ltd
21 Dec - 28 Dec Porter Airlines (Canada) Ltd
09 Dec - 17 Dec Air Canada
26 Dec - 31 Dec Porter Airlines (Canada) Ltd
27 Dec - 07 Jan Porter Airlines (Canada) Ltd
24 Dec - 29 Dec Porter Airlines (Canada) Ltd
29 Dec - 06 Jan United
26 Dec - 06 Jan Porter Airlines (Canada) Ltd
30 Dec - 06 Jan Scandinavian Airlines
26 Dec - 03 Jan Porter Airlines (Canada) Ltd
26 Dec - 02 Jan Porter Airlines (Canada) Ltd
29 Dec - 02 Jan Porter Airlines (Canada) Ltd

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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