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

Return flights

20 Apr - 27 Apr	Spirit Airlines
14 Apr - 21 Apr	Spirit Airlines
15 Apr - 22 Apr	Spirit Airlines
17 Apr - 21 Apr	Spirit Airlines
03 Apr - 09 Apr	Spirit Airlines
08 Apr - 15 Apr	Spirit Airlines
19 Apr - 26 Apr	Spirit Airlines
02 Apr - 07 Apr	Spirit Airlines
07 Apr - 13 Apr	Spirit Airlines
06 Apr - 11 Apr	Air Canada
25 Apr - 02 May	Air Canada
29 Apr - 06 May	American Airlines
30 Apr - 07 May	American Airlines

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 428€

Return flights