$768 Cheap United flights Washington (IAD) to Lisbon (LIS)

View $768 flight on Mon, Sep 22, 2025Opens in a new window

$768 Cheap United flights Washington (IAD) to Lisbon (LIS)

Prices were available within the past 7 days and start at $768 for one-way flights and $1,089 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Nov 21 - Sat, Nov 29
IAD
Washington
LIS
Lisbon
$1,089 Roundtrip, found 13 hours ago
$1,089
Roundtrip
found 13 hours ago
Select United flight, departing Fri, Nov 21 from Washington to Lisbon, returning Sat, Nov 29, priced at $1,089 found 13 hours ago
Flights from Washington (IAD) to Lisbon (LIS)
Origin airport
Washington Dulles Intl.
Destination airport
Humberto Delgado
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, JetBlue Airways, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United
Popular airline
Royal Air Maroc
Distance
5732 km