Cheapest return flights from Washington to Keflavik in May from 472€

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

Return flights

01 May - 09 May Lufthansa
01 May - 10 May Lufthansa
19 May - 26 May Icelandair direct
13 May - 20 May Icelandair direct
01 May - 10 May Icelandair direct
08 May - 22 May Lufthansa
02 May - 09 May Icelandair direct
01 May - 09 May Icelandair direct
08 May - 22 May Icelandair direct
18 May - 25 May Icelandair direct

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

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