Cheapest one-way flights from Denver to Keflavik in March from $262

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 March 2025 (see full year).

One-Way flights

24 Mar Frontier Airlines
26 Mar Frontier Airlines
22 Mar Frontier Airlines
22 Mar Icelandair direct
15 Mar Icelandair direct

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

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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