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

Return flights

08 Jan - 11 Jan	Icelandair	direct
12 Jan - 18 Jan	Icelandair	direct
11 Jan - 25 Jan	Icelandair	direct
03 Jan - 10 Jan	Icelandair	direct
15 Jan - 20 Jan	Icelandair	direct
07 Jan - 11 Jan	Lufthansa
02 Jan - 09 Jan	Icelandair	direct
02 Jan - 07 Jan	Finnair
11 Jan - 14 Jan	Icelandair	direct
13 Jan - 16 Jan	Icelandair	direct

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

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 January from 323€

Return flights