Cheapest return flights from Denver to Keflavik in April from $512

Best time to book flights for Denver (DEN) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Keflavik (KEF) in April 2025 (see full year).

Return flights

22 Apr - 29 Apr Frontier Airlines
17 Apr - 28 Apr Icelandair direct
18 Apr - 28 Apr Icelandair direct
21 Apr - 04 May Icelandair direct
12 Apr - 20 Apr Icelandair direct
03 Apr - 10 Apr Icelandair direct
04 Apr - 11 Apr Icelandair direct
11 Apr - 18 Apr Icelandair direct
21 Apr - 28 Apr Icelandair direct
07 Apr - 14 Apr Icelandair direct
01 Apr - 08 Apr jetBlue
28 Apr - 05 May Icelandair direct
27 Apr - 04 May Frontier Airlines
26 Apr - 03 May Sun Country Airlines

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

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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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