Cheapest return flights from Washington to Keflavik in May from 453€

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

Return flights

16 May - 23 May Icelandair direct
17 May - 24 May Icelandair direct
20 May - 27 May Icelandair direct
08 May - 11 May Air France
21 May - 28 May Icelandair direct
08 May - 11 May Icelandair direct
17 May - 27 May Icelandair direct
19 May - 23 May Icelandair direct
25 May - 01 Jun Icelandair direct
03 May - 06 May Scandinavian Airlines
03 May - 06 May Icelandair direct

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

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