Cheapest one-way flights from Denver to Keflavik in May from $286

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

AirHint found the following cheapest one-way flights from Denver (DEN) to Keflavik (KEF) in May 2025 (see full year).

One-Way flights

25 May WestJet
03 May Frontier Airlines
28 May Alaska Airlines
29 May WestJet
02 May Frontier Airlines
25 May Icelandair direct
29 May Icelandair direct
02 May Icelandair direct
28 May Icelandair direct
03 May Icelandair direct

Also check the deals for return flights from Denver to Keflavik in May.

Skyscanner

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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