Cheapest return flights from Washington to Keflavik in January from $517

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

Return flights

28 Jan - 04 Feb Icelandair direct
31 Jan - 07 Feb Lufthansa
29 Jan - 01 Feb Lufthansa
22 Jan - 27 Jan SWISS
21 Jan - 27 Jan Lufthansa
31 Jan - 07 Feb Icelandair direct
28 Jan - 01 Feb Lufthansa
27 Jan - 01 Feb Scandinavian Airlines
21 Jan - 28 Jan Icelandair direct
22 Jan - 29 Jan Lufthansa
21 Jan - 27 Jan Icelandair direct
26 Jan - 31 Jan Scandinavian Airlines
26 Jan - 31 Jan Icelandair direct
20 Jan - 27 Jan Lufthansa
24 Jan - 28 Jan Icelandair direct
20 Jan - 27 Jan Icelandair direct
30 Jan - 01 Feb Icelandair direct
28 Jan - 01 Feb Icelandair direct
29 Jan - 01 Feb Icelandair direct
27 Jan - 01 Feb Icelandair direct

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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