Cheapest return flights from Washington to Keflavik in July from $509

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

Return flights

07 Jul - 11 Jul Icelandair direct
15 Jul - 30 Jul Icelandair direct
04 Jul - 08 Jul Icelandair direct
07 Jul - 28 Jul Icelandair direct
15 Jul - 29 Jul Icelandair direct
12 Jul - 18 Jul Icelandair direct
11 Jul - 20 Jul Icelandair direct
14 Jul - 27 Jul Icelandair direct
01 Jul - 07 Jul Icelandair direct
16 Jul - 25 Jul Icelandair direct
30 Jul - 04 Aug Icelandair direct
21 Jul - 03 Aug SWISS
21 Jul - 03 Aug Icelandair direct

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

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