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

Return flights

17 Aug - 26 Aug	United
30 Aug - 19 Sep	Air Canada
20 Aug - 26 Aug	United
20 Aug - 27 Aug	United
20 Aug - 31 Aug	Air Canada
01 Aug - 08 Aug	Air Canada
07 Aug - 14 Aug	Air Canada
09 Aug - 29 Aug	Air Canada
10 Aug - 18 Aug	Air Canada
09 Aug - 19 Aug	Air Canada
10 Aug - 14 Aug	Air Canada

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

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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Cheapest return flights from New York to Keflavik in August from $381

Return flights