Cheapest return flights from New York to Keflavik in September from $419

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

Return flights

02 Sep - 09 Sep Air Canada
24 Sep - 28 Sep United
14 Sep - 21 Sep Delta
01 Sep - 08 Sep Air France
27 Sep - 03 Oct Air Canada
26 Sep - 02 Oct Porter Airlines (Canada) Ltd
08 Sep - 14 Sep Porter Airlines (Canada) Ltd

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

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