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

Return flights

09 May - 16 May	Virgin Atlantic
12 May - 19 May	Virgin Atlantic
10 May - 17 May	Virgin Atlantic
11 May - 18 May	Virgin Atlantic
13 May - 20 May	Virgin Atlantic
19 May - 26 May	Virgin Atlantic
17 May - 24 May	Virgin Atlantic
10 May - 17 May	Virgin Atlantic	direct
01 May - 08 May	KLM
01 May - 11 May	Delta	direct
29 May - 12 Jun	Icelandair	direct
30 May - 13 Jun	Icelandair	direct
30 May - 10 Jun	Icelandair	direct

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

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 May from 343€

Return flights