Cheapest return flights from Denver to Keflavik in May from $573

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

Return flights

23 May - 31 May Icelandair direct
04 May - 11 May Delta
12 May - 23 May Icelandair direct
05 May - 12 May KLM
06 May - 13 May Air France
08 May - 16 May Icelandair direct
27 May - 06 Jun Icelandair direct
04 May - 11 May Icelandair direct
10 May - 17 May Icelandair direct
05 May - 12 May Icelandair direct
06 May - 13 May Icelandair direct
30 May - 06 Jun Icelandair direct
31 May - 07 Jun Icelandair direct
28 May - 04 Jun Icelandair direct
29 May - 05 Jun Icelandair direct

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

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