Cheapest return flights from Washington to Keflavik in August from $521

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

Return flights

16 Aug - 23 Aug Scandinavian Airlines
16 Aug - 22 Aug Scandinavian Airlines
28 Aug - 07 Sep Scandinavian Airlines
16 Aug - 23 Aug Icelandair direct
28 Aug - 07 Sep Icelandair direct
11 Aug - 22 Aug SWISS
11 Aug - 13 Aug Air Canada
09 Aug - 22 Aug Scandinavian Airlines
16 Aug - 22 Aug Icelandair direct
11 Aug - 22 Aug Icelandair direct
04 Aug - 15 Aug SWISS
11 Aug - 13 Aug Icelandair direct

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

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