Cheapest one-way flights from Washington to Lisbon in April from $306

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

One-Way flights

15 Apr Aer Lingus
01 Apr Royal Air Maroc
03 Apr Royal Air Maroc
05 Apr Royal Air Maroc
06 Apr Royal Air Maroc
20 Apr Royal Air Maroc
24 Apr Royal Air Maroc
26 Apr Royal Air Maroc
29 Apr Royal Air Maroc
16 Apr Icelandair

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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