AirHint found the following cheapest return flights from Newark (EWR) to Keflavik (KEF) in August 2026 (see full year).

Return flights

17 Aug - 26 Aug	United
18 Aug - 25 Aug	Air Canada
19 Aug - 24 Aug	Air Canada
01 Aug - 21 Aug	Virgin Atlantic
11 Aug - 21 Aug	Air Canada
21 Aug - 28 Aug	Air Canada
29 Aug - 05 Sep	Brussels Airlines	direct
21 Aug - 28 Aug	Brussels Airlines	direct
19 Aug - 24 Aug	Icelandair	direct
18 Aug - 25 Aug	Icelandair	direct
17 Aug - 26 Aug	Icelandair	direct

Also check the deals for one-way flights from Newark to Keflavik in August.

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 Newark to Keflavik in August from $393

Return flights