Cheapest return flights from Washington to Keflavik in May from 460€

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

Return flights

13 May - 20 May Icelandair direct
15 May - 22 May Icelandair direct
16 May - 23 May Icelandair direct
10 May - 17 May Icelandair direct
27 May - 03 Jun Icelandair direct
29 May - 05 Jun Icelandair direct
31 May - 07 Jun Icelandair direct
11 May - 18 May Icelandair direct
12 May - 19 May Icelandair direct
08 May - 11 May Icelandair direct
09 May - 13 May Icelandair direct
27 May - 05 Jun Icelandair direct
24 May - 02 Jun Icelandair direct
31 May - 04 Jun Icelandair direct
25 May - 01 Jun Icelandair direct
26 May - 02 Jun Icelandair direct
28 May - 04 Jun Icelandair direct
09 May - 16 May Icelandair direct
14 May - 21 May Scandinavian Airlines
30 May - 01 Jun Icelandair direct

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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