Cheapest return flights from Miami to Keflavik in September from 402€

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

Return flights

03 Sep - 10 Sep Virgin Atlantic
04 Sep - 11 Sep Virgin Atlantic
12 Sep - 24 Sep Spirit Airlines
07 Sep - 14 Sep Spirit Airlines
25 Sep - 30 Sep Frontier Airlines
14 Sep - 27 Sep Frontier Airlines
01 Sep - 08 Sep Frontier Airlines
28 Sep - 02 Oct Spirit Airlines

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

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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