Cheapest return flights from Detroit to Keflavik in August from $709

AirHint found the following cheapest return flights from Detroit (DTW) to Keflavik (KEF) in August 2026 (see full year).

Return flights

22 Aug - 29 Aug Spirit Airlines
23 Aug - 30 Aug Spirit Airlines
23 Aug - 30 Aug Delta direct
31 Aug - 07 Sep Air France direct
22 Aug - 29 Aug Air France direct
06 Aug - 11 Aug Spirit Airlines

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

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