Cheapest return flights from Washington to Keflavik in March from $377

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

Return flights

24 Mar - 31 Mar Icelandair direct
15 Mar - 19 Mar Icelandair direct
17 Mar - 24 Mar Icelandair direct
09 Mar - 17 Mar Icelandair direct
10 Mar - 17 Mar Icelandair direct
23 Mar - 27 Mar Icelandair direct
01 Mar - 06 Mar Icelandair direct
08 Mar - 12 Mar Icelandair direct
02 Mar - 06 Mar Icelandair direct
15 Mar - 24 Mar Icelandair direct
31 Mar - 07 Apr Icelandair direct
29 Mar - 02 Apr Icelandair direct
30 Mar - 06 Apr Scandinavian Airlines
29 Mar - 05 Apr Scandinavian Airlines
29 Mar - 04 Apr Scandinavian Airlines
29 Mar - 04 Apr Icelandair direct
28 Mar - 03 Apr Icelandair direct
29 Mar - 05 Apr Icelandair direct
28 Mar - 04 Apr Icelandair direct
27 Mar - 06 Apr Icelandair direct

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

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