Cheapest return flights from Denver to Keflavik in April from 730€

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

Return flights

10 Apr - 17 Apr Icelandair direct
14 Apr - 22 Apr KLM
25 Apr - 02 May Air France
24 Apr - 26 Apr Alaska Airlines
20 Apr - 27 Apr Frontier Airlines
14 Apr - 18 Apr Southwest Airlines
10 Apr - 14 Apr Air France
11 Apr - 18 Apr Air France
23 Apr - 26 Apr KLM
13 Apr - 27 Apr Delta
13 Apr - 16 Apr Delta

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

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