$563 Cheap United flights Washington (IAD) to Lisbon (LIS)

$563 Cheap United flights Washington (IAD) to Lisbon (LIS)

Prices were available within the past 7 days and start at $563 for one-way flights and $977 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Mar 13 - Thu, Mar 19

IAD

Washington

LIS

Lisbon

$977 Roundtrip, found 3 days ago

$977

Roundtrip

found 3 days ago

Select United flight, departing Fri, Mar 13 from Washington to Lisbon, returning Thu, Mar 19, priced at $977 found 3 days ago