Cheapest return flights from Washington to Keflavik in May from 438€

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

Return flights

10 May - 16 May Icelandair direct
14 May - 18 May Icelandair direct
26 May - 31 May Icelandair direct
29 May - 01 Jun Icelandair direct
29 May - 09 Jun Icelandair direct
07 May - 12 May Icelandair direct
01 May - 11 May Lufthansa
01 May - 11 May Icelandair direct
21 May - 25 May Icelandair direct
15 May - 23 May British Airways

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

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