Cheapest return flights from Denver to Keflavik in April from $546

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

Return flights

02 Apr - 16 Apr Icelandair direct
14 Apr - 22 Apr Icelandair direct
03 Apr - 10 Apr Icelandair direct
20 Apr - 27 Apr Icelandair direct
11 Apr - 18 Apr Air France
10 Apr - 17 Apr Icelandair direct
16 Apr - 19 Apr Icelandair direct
24 Apr - 01 May Icelandair direct
23 Apr - 01 May Icelandair direct
29 Apr - 06 May KLM
12 Apr - 19 Apr Air France
02 Apr - 07 Apr Alaska Airlines

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

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