Cheapest return flights from Miami to Keflavik in August from $510

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

Return flights

05 Aug - 13 Aug Frontier Airlines
07 Aug - 13 Aug Spirit Airlines
22 Aug - 31 Aug Spirit Airlines
12 Aug - 20 Aug Air Canada
05 Aug - 11 Aug Frontier Airlines
12 Aug - 21 Aug Air Canada
24 Aug - 02 Sep Spirit Airlines
15 Aug - 20 Aug Air Canada
19 Aug - 24 Aug United
30 Aug - 04 Sep Spirit Airlines
13 Aug - 27 Aug Air Canada
04 Aug - 13 Aug United
28 Aug - 02 Sep Spirit Airlines
22 Aug - 02 Sep Frontier Airlines
25 Aug - 01 Sep Frontier Airlines
24 Aug - 04 Sep Air Canada
29 Aug - 04 Sep jetBlue
28 Aug - 05 Sep Frontier Airlines
31 Aug - 05 Sep Frontier Airlines
30 Aug - 08 Sep Air France

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

Skyscanner

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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