Cheapest return flights from Washington to Keflavik in July from $492

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

Return flights

21 Jul - 29 Jul Icelandair direct
13 Jul - 18 Jul Icelandair direct
15 Jul - 30 Jul Icelandair direct
07 Jul - 28 Jul Icelandair direct
28 Jul - 04 Aug Icelandair direct
15 Jul - 29 Jul Icelandair direct
18 Jul - 25 Jul Icelandair direct
12 Jul - 18 Jul Icelandair direct
11 Jul - 20 Jul Icelandair direct
12 Jul - 15 Jul Icelandair direct
25 Jul - 29 Jul Icelandair direct

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

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