Cheapest return flights from Denver to Keflavik in January from $450

Best time to book flights for Denver (DEN) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Keflavik (KEF) in January 2025 (see full year).

Return flights

24 Jan - 31 Jan Frontier Airlines
27 Jan - 03 Feb Frontier Airlines
19 Jan - 26 Jan Frontier Airlines
26 Jan - 02 Feb Frontier Airlines
20 Jan - 27 Jan Frontier Airlines
25 Jan - 01 Feb Frontier Airlines
28 Jan - 04 Feb Frontier Airlines
21 Jan - 28 Jan jetBlue
18 Jan - 25 Jan Frontier Airlines
08 Jan - 15 Jan jetBlue
22 Jan - 29 Jan jetBlue
12 Jan - 17 Jan Frontier Airlines
11 Jan - 18 Jan Frontier Airlines
15 Jan - 22 Jan jetBlue
15 Jan - 06 Feb Icelandair direct

Also check the deals for one-way 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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