Cheapest return flights from New York to Keflavik in September from 341€

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

Return flights

08 Sep - 15 Sep Air Canada
06 Sep - 13 Sep Air Canada
07 Sep - 14 Sep Air Canada
04 Sep - 12 Sep United
13 Sep - 26 Sep United
17 Sep - 02 Oct Delta
05 Sep - 13 Sep United
28 Sep - 12 Oct British Airways

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

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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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