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

Return flights

05 Mar - 12 Mar	Finnair
11 Mar - 16 Mar	Finnair
12 Mar - 23 Mar	Finnair
31 Mar - 08 Apr	Icelandair	direct
16 Mar - 23 Mar	Finnair
03 Mar - 12 Mar	Finnair
04 Mar - 13 Mar	Finnair
30 Mar - 08 Apr	Icelandair	direct
17 Mar - 25 Mar	Finnair
03 Mar - 17 Mar	Icelandair	direct
15 Mar - 25 Mar	Finnair
05 Mar - 13 Mar	Finnair
30 Mar - 03 Apr	Air France	direct
30 Mar - 04 Apr	Delta	direct
26 Mar - 02 Apr	Finnair
25 Mar - 01 Apr	Finnair
25 Mar - 03 Apr	Finnair
01 Mar - 01 Apr	Scandinavian Airlines
01 Mar - 01 Apr	Icelandair	direct
24 Mar - 05 Apr	Icelandair

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 $390

Return flights