Cheapest return flights from Detroit to Keflavik in October from $350

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

Return flights

13 Oct - 20 Oct Icelandair direct
18 Oct - 25 Oct Icelandair direct
03 Oct - 06 Oct Spirit Airlines
27 Oct - 03 Nov Icelandair direct
16 Oct - 27 Oct Icelandair direct
07 Oct - 14 Oct Icelandair direct
02 Oct - 06 Oct Icelandair direct
04 Oct - 07 Oct Spirit Airlines
14 Oct - 19 Oct Delta direct
04 Oct - 07 Oct Icelandair direct
22 Oct - 29 Oct Icelandair

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

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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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