Cheapest one-way flights from Denver to Keflavik in January from $353

AirHint found the following cheapest one-way flights from Denver (DEN) to Keflavik (KEF) in January 2026 (see full year).

One-Way flights

25 Jan Brussels Airlines
29 Jan Lufthansa
31 Jan Air Canada
24 Jan Frontier Airlines
30 Jan Frontier Airlines
18 Jan Icelandair direct
20 Jan Lufthansa
30 Jan Icelandair direct
16 Jan Lufthansa
19 Jan Icelandair direct

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

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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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