Cheapest return flights from New York to Keflavik in March from $569

AirHint found the following cheapest return flights from New York (LGA) to Keflavik (KEF) in March 2026 (see full year).

Return flights

18 Mar - 23 Mar Spirit Airlines
07 Mar - 13 Mar Air Canada
25 Mar - 29 Mar Spirit Airlines
02 Mar - 08 Mar Spirit Airlines
23 Mar - 30 Mar Frontier Airlines
06 Mar - 10 Mar Spirit Airlines
28 Mar - 05 Apr Spirit Airlines
10 Mar - 24 Mar Scandinavian Airlines
09 Mar - 15 Mar Spirit Airlines
18 Mar - 31 Mar Frontier Airlines
31 Mar - 05 Apr Spirit Airlines
29 Mar - 02 Apr Spirit Airlines
07 Mar - 15 Mar Air Canada
25 Mar - 08 Apr Spirit Airlines
25 Mar - 07 Apr Air Canada
20 Mar - 01 Apr Air Canada
27 Mar - 10 Apr Porter Airlines (Canada) Ltd
25 Mar - 04 Apr Frontier Airlines
26 Mar - 09 Apr Frontier Airlines
27 Mar - 04 Apr Frontier Airlines

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

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