Cheapest return flights from Washington to Keflavik in January from $375

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

Return flights

17 Jan - 22 Jan Icelandair direct
06 Jan - 14 Jan Icelandair direct
26 Jan - 30 Jan Icelandair direct
17 Jan - 21 Jan Icelandair direct
26 Jan - 31 Jan Icelandair direct
27 Jan - 31 Jan Icelandair direct
23 Jan - 28 Jan Icelandair direct
17 Jan - 20 Jan Scandinavian Airlines
05 Jan - 31 Jan Icelandair direct
14 Jan - 20 Jan Icelandair direct

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

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