Cheapest return flights from Washington to Keflavik in March from $431

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

Return flights

09 Mar - 17 Mar Icelandair direct
03 Mar - 10 Mar Icelandair direct
23 Mar - 01 Apr Scandinavian Airlines
23 Mar - 27 Mar Icelandair direct
03 Mar - 09 Mar Icelandair direct
24 Mar - 31 Mar Icelandair direct
31 Mar - 07 Apr Icelandair direct
02 Mar - 16 Mar Scandinavian Airlines
17 Mar - 24 Mar Scandinavian Airlines
02 Mar - 09 Mar Icelandair direct
17 Mar - 24 Mar Icelandair direct
16 Mar - 18 Mar Icelandair direct
30 Mar - 03 Apr Scandinavian Airlines
25 Mar - 01 Apr Scandinavian Airlines
29 Mar - 03 Apr Scandinavian Airlines
26 Mar - 02 Apr Air Canada
28 Mar - 02 Apr Porter Airlines (Canada) Ltd
28 Mar - 01 Apr Porter Airlines (Canada) Ltd
31 Mar - 05 Apr Icelandair
25 Mar - 03 Apr Scandinavian Airlines

Also check the deals for one-way flights from Washington 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.