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

Return flights

19 Aug - 26 Aug	Air Canada
18 Aug - 25 Aug	KLM
17 Aug - 26 Aug	KLM
20 Aug - 27 Aug	Air Canada
17 Aug - 24 Aug	Virgin Atlantic
21 Aug - 28 Aug	Virgin Atlantic
24 Aug - 09 Sep	United	direct
17 Aug - 31 Aug	United
17 Aug - 04 Sep	KLM
31 Aug - 06 Sep	United	direct
20 Aug - 27 Aug	Icelandair	direct
21 Aug - 28 Aug	Icelandair	direct
22 Aug - 29 Aug	Icelandair	direct
17 Aug - 04 Sep	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 338€

Return flights