Cheapest one-way flights from Washington to Lisbon in March from $251

AirHint found the following cheapest one-way flights from Washington (IAD) to Lisbon (LIS) in March 2026 (see full year).

One-Way flights

16 Mar Icelandair
23 Mar Breeze Airways
22 Mar Icelandair
01 Mar Royal Air Maroc
07 Mar Frontier Airlines
30 Mar Porter Airlines (Canada) Ltd
31 Mar Frontier Airlines
29 Mar Porter Airlines (Canada) Ltd
12 Mar Frontier Airlines
04 Mar Air Canada

Also check the deals for return flights from Washington to Lisbon 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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