AirHint found the following cheapest return flights from Cleveland (CLE) to Keflavik (KEF) in August 2025 (see full year).

Return flights

22 Aug - 27 Aug	jetBlue
27 Aug - 03 Sep	jetBlue
24 Aug - 31 Aug	Frontier Airlines
19 Aug - 26 Aug	Air Canada
25 Aug - 01 Sep	jetBlue
26 Aug - 02 Sep	Air Canada
19 Aug - 02 Sep	Air Canada
08 Aug - 30 Aug	Spirit Airlines
17 Aug - 23 Aug	Spirit Airlines

Also check the deals for one-way flights from Cleveland 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 Cleveland to Keflavik in August from $474

Return flights