Cheapest return flights from Detroit to Keflavik in December from $578

Best time to book flights for Detroit (DTW) to Keflavik (KEF) flights at AirHint

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

Return flights

15 Dec - 22 Dec Icelandair direct
20 Dec - 27 Dec Icelandair direct
15 Dec - 23 Dec jetBlue
23 Dec - 30 Dec jetBlue
16 Dec - 23 Dec jetBlue
26 Dec - 03 Jan Icelandair direct
18 Dec - 26 Dec Icelandair
27 Dec - 03 Jan Icelandair direct
17 Dec - 24 Dec Icelandair
17 Dec - 25 Dec Icelandair
16 Dec - 24 Dec Icelandair
18 Dec - 25 Dec jetBlue

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

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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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