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

Return flights

01 Apr - 09 Apr	Finnair
01 Apr - 08 Apr	Finnair
07 Apr - 18 Apr	Finnair
08 Apr - 15 Apr	Finnair
15 Apr - 09 May	Finnair
13 Apr - 09 May	Finnair
02 Apr - 11 Apr	British Airways
08 Apr - 15 Apr	Icelandair	direct
24 Apr - 29 Apr	Icelandair	direct
30 Apr - 19 May	Finnair
03 Apr - 06 Apr	SWISS
01 Apr - 30 Apr	Icelandair	direct
06 Apr - 13 Apr	Icelandair	direct
15 Apr - 09 May	Icelandair	direct
13 Apr - 09 May	Icelandair	direct
30 Apr - 19 May	Icelandair	direct

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

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 April from $407

Return flights