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

Return flights

17 Aug - 26 Aug	United
27 Aug - 31 Aug	United	direct
26 Aug - 30 Aug	Air France
19 Aug - 12 Sep	Air Canada
21 Aug - 27 Aug	Finnair
19 Aug - 12 Sep	Icelandair	direct
17 Aug - 26 Aug	Icelandair	direct
21 Aug - 27 Aug	Icelandair	direct
24 Aug - 27 Aug	Scandinavian Airlines
26 Aug - 30 Aug	Icelandair	direct
06 Aug - 13 Aug	Lufthansa
10 Aug - 05 Sep	Finnair
05 Aug - 15 Aug	Finnair
10 Aug - 05 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from New York to Keflavik in August from 324€

Return flights