Cheapest return flights from Denver to Keflavik in August from 349€

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

Return flights

06 Aug - 13 Aug Icelandair direct
30 Aug - 04 Sep Icelandair direct
10 Aug - 16 Aug Icelandair direct
14 Aug - 21 Aug Icelandair direct
23 Aug - 27 Aug Icelandair direct
16 Aug - 26 Aug Icelandair direct
14 Aug - 19 Aug Icelandair direct
10 Aug - 14 Aug Icelandair direct
18 Aug - 31 Aug Icelandair direct
18 Aug - 24 Aug Icelandair direct
04 Aug - 11 Aug Frontier Airlines

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

Skyscanner

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.