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

Return flights

26 Aug - 05 Sep	Spirit Airlines
21 Aug - 28 Aug	Spirit Airlines
24 Aug - 28 Aug	Icelandair	direct
23 Aug - 30 Aug	Icelandair	direct
19 Aug - 24 Aug	Air Canada
16 Aug - 23 Aug	Air Canada
21 Aug - 28 Aug	Icelandair	direct
29 Aug - 02 Sep	Air Canada
04 Aug - 08 Aug	Spirit Airlines
28 Aug - 01 Sep	Air Canada
19 Aug - 24 Aug	Icelandair	direct
05 Aug - 08 Aug	Frontier Airlines

Also check the deals for one-way flights from Orlando 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 Orlando to Keflavik in August from 339€

Return flights