Cheapest one-way flights from Washington to Lisbon in March from 300€

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

One-Way flights

22 Mar Royal Air Maroc
12 Mar Frontier Airlines
31 Mar Frontier Airlines
07 Mar Frontier Airlines
29 Mar Porter Airlines (Canada) Ltd
26 Mar Porter Airlines (Canada) Ltd
28 Mar Porter Airlines (Canada) Ltd
22 Mar TAP direct
31 Mar TAP direct
29 Mar TAP direct

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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