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

AAAmerican Airlines

BABritish Airways

Round Trip•First Class

LIS

Portela Airport

Lisbon, Portugal

IAD

Washington Dulles International Airport

Washington, United States

$7,743 USD

-53%$3,603 USD

Verified 1 day ago

July 2025

Today

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30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17$14,917 18$14,872 19$14,872 20$14,872 21$14,918 22$14,872 23$14,872 24$14,872 25$14,872 26$10,079 27$10,079 28$10,126 29$6,561 30$14,872 31$14,872 1$10,079 2$6,561 3$14,918

Good Availability

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

Thursday, July 17th, 2025

10 round-trip options

Returning

Tue, Jul 22, 2025•5 Day Trip

$14,917 USD

Google Flights

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Wed, Jul 23, 2025•6 Day Trip

$14,917 USD

Google Flights

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Thu, Jul 24, 2025•7 Day Trip

$14,924 USD

Google Flights

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Fri, Jul 25, 2025•8 Day Trip

$14,917 USD

Google Flights

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Sat, Jul 26, 2025•9 Day Trip

$14,942 USD

Google Flights

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Sun, Jul 27, 2025•10 Day Trip

$14,942 USD

Google Flights

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Mon, Jul 28, 2025•11 Day Trip

$14,942 USD

Google Flights

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Tue, Jul 29, 2025•12 Day Trip

$14,942 USD

Google Flights

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Wed, Jul 30, 2025•13 Day Trip

$14,917 USD

Google Flights

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Thu, Jul 31, 2025•14 Day Trip

$14,917 USD

Google Flights