Cheapest return flights from Washington to Keflavik in April from $392

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

Return flights

16 Apr - 21 Apr Icelandair direct
11 Apr - 18 Apr Icelandair direct
21 Apr - 26 Apr Icelandair direct
08 Apr - 12 Apr Icelandair direct
04 Apr - 11 Apr Icelandair direct

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

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