Cheapest one-way flights from Denver to Keflavik in October from 285€

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

One-Way flights

22 Oct Frontier Airlines
21 Oct Frontier Airlines
17 Oct Air France
18 Oct Air France
19 Oct Air France
20 Oct Air France
19 Oct Icelandair direct
21 Oct Icelandair direct
22 Oct Icelandair direct
18 Oct Icelandair direct

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

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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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