AirHint found the following cheapest return flights from New York (LGA) to Keflavik (KEF) in July 2025 (see full year).

Return flights

24 Jul - 31 Jul	Air Canada
25 Jul - 01 Aug	Air Canada
26 Jul - 02 Aug	Air Canada
23 Jul - 30 Jul	Air Canada
25 Jul - 30 Jul	Air Canada
23 Jul - 27 Jul	Air Canada
25 Jul - 06 Aug	Air Canada
23 Jul - 02 Aug	Air Canada
28 Jul - 04 Aug	United
24 Jul - 29 Jul	Air Canada
20 Jul - 27 Jul	Air Canada
24 Jul - 05 Aug	Air Canada
31 Jul - 03 Aug	Air Canada
26 Jul - 03 Aug	Air Canada
30 Jul - 05 Aug	Air Canada
27 Jul - 03 Aug	United
09 Jul - 16 Jul	Air Canada
16 Jul - 23 Jul	Air Canada
04 Jul - 11 Jul	Air Canada
11 Jul - 16 Jul	Air Canada

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

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 July from $411

Return flights