Cheapest return flights from Detroit to Keflavik in September from 291€

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

Return flights

22 Sep - 29 Sep Icelandair direct
16 Sep - 23 Sep Icelandair direct
15 Sep - 29 Sep Icelandair direct
27 Sep - 06 Oct Spirit Airlines
06 Sep - 09 Sep Spirit Airlines
27 Sep - 06 Oct Air France direct
25 Sep - 06 Oct Delta direct
06 Sep - 14 Sep Air Canada
07 Sep - 12 Sep Air France direct
14 Sep - 22 Sep Air France direct
28 Sep - 04 Oct Spirit Airlines
06 Sep - 13 Sep United
04 Sep - 25 Sep Air France
10 Sep - 17 Sep United
14 Sep - 04 Oct Frontier Airlines
29 Sep - 03 Oct Spirit Airlines
27 Sep - 18 Oct Spirit Airlines
27 Sep - 18 Oct Icelandair direct
29 Sep - 03 Oct Delta direct

Also check the deals for one-way flights from Detroit 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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