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

Return flights

07 Mar - 14 Mar	Finnair
14 Mar - 22 Mar	Finnair
24 Mar - 31 Mar	Icelandair	direct
07 Mar - 13 Mar	Icelandair	direct
01 Mar - 08 Mar	Finnair
02 Mar - 11 Mar	Finnair
11 Mar - 25 Mar	Finnair
02 Mar - 09 Mar	Finnair
17 Mar - 29 Mar	Finnair
22 Mar - 29 Mar	Finnair
29 Mar - 09 Apr	Finnair
10 Mar - 04 Apr	Icelandair	direct
30 Mar - 04 Apr	Austrian Airlines
29 Mar - 09 Apr	Icelandair	direct
13 Mar - 04 Apr	Icelandair	direct
29 Mar - 05 Apr	Icelandair	direct
30 Mar - 04 Apr	Icelandair	direct
30 Mar - 06 Apr	Icelandair	direct

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

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 March from $427

Return flights