Cheapest return DTW–KEF flights, May

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

Return flights

31 May - 08 Jun Icelandair
27 May - 04 Jun jetBlue
26 May - 03 Jun Frontier Airlines
28 May - 05 Jun jetBlue
27 May - 03 Jun jetBlue
24 May - 01 Jun jetBlue
31 May - 07 Jun Icelandair
28 May - 04 Jun jetBlue
26 May - 02 Jun Virgin Atlantic
25 May - 02 Jun Virgin Atlantic
19 May - 26 May Air France
20 May - 28 May KLM
15 May - 22 May United
15 May - 29 May United
16 May - 23 May United
16 May - 24 May United
19 May - 27 May Virgin Atlantic
18 May - 26 May jetBlue
10 May - 17 May jetBlue
18 May - 25 May jetBlue

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

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