Cheapest return flights from Washington to Keflavik in March from $503

Best time to book flights for Washington (IAD) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to Keflavik (KEF) in March 2025 (see full year).

Return flights

19 Mar - 25 Mar Scandinavian Airlines
19 Mar - 26 Mar British Airways
20 Mar - 23 Mar British Airways
12 Mar - 17 Mar British Airways
11 Mar - 18 Mar British Airways
24 Mar - 26 Mar Porter Airlines (Canada) Ltd
19 Mar - 26 Mar Icelandair direct
13 Mar - 19 Mar Austrian Airlines
01 Mar - 08 Mar British Airways
11 Mar - 18 Mar Icelandair direct

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

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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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