Cheapest return flights from Denver to Keflavik in March from $449

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

Return flights

17 Mar - 25 Mar Icelandair direct
24 Mar - 01 Apr Icelandair direct
26 Mar - 03 Apr Icelandair direct
23 Mar - 30 Mar Icelandair direct
26 Mar - 29 Mar Icelandair direct
28 Mar - 05 Apr Icelandair direct
29 Mar - 06 Apr KLM
23 Mar - 31 Mar Lufthansa
25 Mar - 02 Apr Lufthansa
21 Mar - 29 Mar Icelandair direct
16 Mar - 24 Mar Lufthansa
18 Mar - 26 Mar jetBlue
19 Mar - 27 Mar Icelandair direct
14 Mar - 18 Mar Icelandair direct
14 Mar - 19 Mar Icelandair direct
27 Mar - 04 Apr jetBlue

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

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.