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

Return flights

19 Aug - 24 Aug	Air Canada
12 Aug - 24 Aug	Air Canada
17 Aug - 26 Aug	Air Canada
27 Aug - 07 Sep	Brussels Airlines	direct
13 Aug - 27 Aug	Air Canada
10 Aug - 20 Aug	Air Canada
18 Aug - 31 Aug	Air Canada
10 Aug - 18 Aug	Air Canada
04 Aug - 15 Sep	Air Canada
13 Aug - 27 Aug	Icelandair	direct
18 Aug - 31 Aug	Icelandair	direct
19 Aug - 24 Aug	Icelandair	direct
04 Aug - 15 Sep	Icelandair	direct

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 $393

Return flights