Cheapest one-way flights from Washington to Keflavik in April from 301€

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

One-Way flights

09 Apr TAP
08 Apr Lufthansa
03 Apr Frontier Airlines
07 Apr SWISS
04 Apr Austrian Airlines
05 Apr Icelandair direct
08 Apr Icelandair direct
09 Apr Icelandair direct
03 Apr Icelandair direct
07 Apr Icelandair direct

Also check the deals for return flights from Washington to Keflavik in April.

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