Cheapest return flights from Denver to Keflavik in October from 554€

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 October 2025 (see full year).

Return flights

09 Oct - 16 Oct Icelandair direct
03 Oct - 11 Oct Icelandair direct
02 Oct - 11 Oct Icelandair direct
21 Oct - 27 Oct Icelandair direct
29 Oct - 05 Nov Icelandair direct
30 Oct - 06 Nov Icelandair direct
20 Oct - 26 Oct British Airways

Also check the deals for one-way 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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