Cheapest one-way flights from Denver to Keflavik in June from $299

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

11 Jun Frontier Airlines
09 Jun Frontier Airlines
30 Jun jetBlue
12 Jun WestJet
27 Jun Allegiant Air
14 Jun Icelandair direct
28 Jun Icelandair direct
30 Jun Icelandair direct
09 Jun Icelandair direct
05 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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