Cheapest return flights from New York to Keflavik in December from 941€

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

Return flights

31 Dec - 07 Jan Air Canada
31 Dec - 08 Jan Spirit Airlines
30 Dec - 08 Jan Frontier Airlines
25 Dec - 28 Dec Spirit Airlines
28 Dec - 07 Jan Porter Airlines (Canada) Ltd
26 Dec - 01 Jan Porter Airlines (Canada) Ltd
23 Dec - 28 Dec Frontier Airlines
28 Dec - 04 Jan Frontier Airlines
31 Dec - 04 Jan Spirit Airlines
30 Dec - 02 Jan Porter Airlines (Canada) Ltd
30 Dec - 04 Jan Frontier Airlines
25 Dec - 31 Dec Spirit Airlines
27 Dec - 03 Jan Frontier Airlines

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

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