Cheapest return flights from Washington to Keflavik in March from $603

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

Return flights

23 Mar - 31 Mar Icelandair direct
17 Mar - 25 Mar Icelandair direct
23 Mar - 01 Apr Icelandair direct
25 Mar - 02 Apr Scandinavian Airlines
09 Mar - 11 Mar Icelandair direct
10 Mar - 11 Mar Icelandair direct
22 Mar - 25 Mar Icelandair direct
09 Mar - 12 Mar Icelandair direct
03 Mar - 10 Mar Scandinavian Airlines
05 Mar - 12 Mar Austrian Airlines
03 Mar - 05 Mar Icelandair direct
03 Mar - 10 Mar Icelandair direct
24 Mar - 01 Apr Virgin Atlantic
30 Mar - 03 Apr Scandinavian Airlines
28 Mar - 06 Apr Frontier Airlines
25 Mar - 03 Apr Porter Airlines (Canada) Ltd
26 Mar - 02 Apr Scandinavian Airlines
26 Mar - 03 Apr Porter Airlines (Canada) Ltd
27 Mar - 04 Apr Air Canada
27 Mar - 03 Apr Air Canada

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

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