Cheapest return flights from Denver to Keflavik in April from 410€

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 April 2025 (see full year).

Return flights

23 Apr - 01 May Frontier Airlines
16 Apr - 24 Apr Frontier Airlines
28 Apr - 06 May Frontier Airlines
24 Apr - 02 May Frontier Airlines
26 Apr - 04 May Frontier Airlines
25 Apr - 01 May Frontier Airlines
22 Apr - 30 Apr Frontier Airlines
17 Apr - 24 Apr Frontier Airlines
08 Apr - 16 Apr Icelandair direct
15 Apr - 23 Apr Icelandair direct
19 Apr - 27 Apr Icelandair direct
26 Apr - 03 May Frontier Airlines
25 Apr - 03 May Frontier Airlines
01 Apr - 09 Apr Frontier Airlines
17 Apr - 25 Apr Icelandair direct
22 Apr - 30 Apr Icelandair direct
28 Apr - 06 May Icelandair direct
19 Apr - 30 Apr Icelandair direct
26 Apr - 04 May Icelandair direct
25 Apr - 01 May Icelandair direct

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

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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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