Cheapest one-way flights from Denver to Keflavik in June from $320

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 June 2025 (see full year).

One-Way flights

13 Jun Frontier Airlines
20 Jun Frontier Airlines
20 Jun Icelandair direct
13 Jun Icelandair direct
19 Jun Icelandair direct
18 Jun WestJet
12 Jun WestJet
17 Jun Icelandair direct
12 Jun Icelandair direct
18 Jun Icelandair direct

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

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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