Cheapest return flights from Denver to Keflavik in October from 387€

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

Return flights

30 Oct - 07 Nov Icelandair direct
27 Oct - 05 Nov Icelandair direct
30 Oct - 06 Nov Icelandair direct
31 Oct - 08 Nov Frontier Airlines
30 Oct - 22 Nov Icelandair direct
22 Oct - 15 Nov Icelandair direct
21 Oct - 15 Nov Icelandair direct
31 Oct - 02 Nov Frontier Airlines
30 Oct - 02 Nov Icelandair direct
19 Oct - 08 Nov Icelandair direct
19 Oct - 21 Oct Air France
17 Oct - 21 Oct Delta
19 Oct - 21 Oct Icelandair direct
21 Oct - 28 Oct Frontier Airlines
21 Oct - 25 Oct Icelandair
20 Oct - 27 Oct Frontier Airlines
20 Oct - 23 Oct Frontier Airlines
21 Oct - 28 Oct Icelandair direct
18 Oct - 25 Oct Hawaiian Airlines
17 Oct - 21 Oct Icelandair direct

Also check the deals for one-way flights from Denver to Keflavik in October.

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