Cheapest one-way flights from Washington to Lisbon in April from 281€

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

One-Way flights

01 Apr Frontier Airlines
27 Apr Icelandair
15 Apr Royal Air Maroc
24 Apr Royal Air Maroc
22 Apr Royal Air Maroc
19 Apr Royal Air Maroc
29 Apr Royal Air Maroc
29 Apr TAP direct
15 Apr TAP direct
22 Apr TAP direct

Also check the deals for return flights from Washington to Lisbon in April.

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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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