$815 Cheap American Airlines flights Washington (IAD) to Lisbon (LIS)

View $815 flight on Wed, Aug 19, 2026Opens in a new window

$815 Cheap American Airlines flights Washington (IAD) to Lisbon (LIS)

Prices were available within the past 7 days and start at $815 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Washington (IAD) to Lisbon (LIS)

February is typically the cheapest month to fly

From $478 - $895 per traveler.
Flights from Washington (IAD) to Lisbon (LIS)
Origin airport
Washington Dulles Intl.
Destination airport
Humberto Delgado
Distance
5732 km
Average flight time
12 hours 6 mins