Lisbon (LIS) to Washington (IAD) cheap flight deal from $3603 USD in first class – flightdeals.net

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American Airlines

AAAmerican Airlines

British Airways

BABritish Airways

Round Trip•First Class

Portela Airport

Lisbon, Portugal

Washington Dulles International Airport

Washington, United States

$7,743 USD

-53%$3,603 USD

Verified 1 day ago

June 2025

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46% of dates checked are available within 10% of the lowest price

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