Cheapest return flights from Denver to Keflavik in May from $432

AirHint found the following cheapest return flights from Denver (DEN) to Keflavik (KEF) in May 2026 (see full year).

Return flights

15 May - 23 May Icelandair direct
30 May - 06 Jun Icelandair direct
23 May - 01 Jun Icelandair direct
22 May - 02 Jun Icelandair direct
27 May - 06 Jun Icelandair direct
31 May - 08 Jun Icelandair direct

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

Powered by

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.