€323 Cheap Flights Lisbon to Washington (LIS-IAD)

View €323 flight on Tue, 16 Sep 2025Opens in a new window

Popular airlines from Humberto Delgado Airport (LIS) to Washington Dulles Intl. Airport (IAD)

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Cheap flights from Lisbon to Washington (LIS-IAD)

Prices were available within the past 7 days and start at €323 for one-way flights and €491 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 28 Aug - Thu, 11 Sep
LIS
Lisbon
IAD
Washington
€491 Return, found 7 hours ago
€491
Return
found 7 hours ago
Select American Airlines flight, departing Thu, 28 Aug from Lisbon to Washington, returning Thu, 11 Sep, priced at €491 found 7 hours ago
Lufthansa
Thu, 11 Sep - Sat, 27 Sep
LIS
Lisbon
IAD
Washington
€498 Return, found 5 days ago
€498
Return
found 5 days ago
Select Lufthansa flight, departing Thu, 11 Sep from Lisbon to Washington, returning Sat, 27 Sep, priced at €498 found 5 days ago
Iberia
Thu, 11 Sep - Fri, 26 Sep
LIS
Lisbon
IAD
Washington
€499 Return, found 5 days ago
€499
Return
found 5 days ago
Select Iberia flight, departing Thu, 11 Sep from Lisbon to Washington, returning Fri, 26 Sep, priced at €499 found 5 days ago
Aer Lingus
Thu, 11 Sep - Fri, 26 Sep
LIS
Lisbon
IAD
Washington
€502 Return, found 5 days ago
€502
Return
found 5 days ago
Select Aer Lingus flight, departing Thu, 11 Sep from Lisbon to Washington, returning Fri, 26 Sep, priced at €502 found 5 days ago
Swiss International Air Lines
Mon, 8 Sep - Mon, 22 Sep
LIS
Lisbon
IAD
Washington
€502 Return, found 2 days ago
€502
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, 8 Sep from Lisbon to Washington, returning Mon, 22 Sep, priced at €502 found 2 days ago
American Airlines
Fri, 29 Aug - Sat, 13 Sep
LIS
Lisbon
IAD
Washington
€516 Return, found 4 days ago
€516
Return
found 4 days ago
Select American Airlines flight, departing Fri, 29 Aug from Lisbon to Washington, returning Sat, 13 Sep, priced at €516 found 4 days ago
United
Thu, 11 Sep - Sat, 27 Sep
LIS
Lisbon
IAD
Washington
€516 Return, found 5 days ago
€516
Return
found 5 days ago
Select United flight, departing Thu, 11 Sep from Lisbon to Washington, returning Sat, 27 Sep, priced at €516 found 5 days ago
Air Canada
Thu, 11 Sep - Sat, 27 Sep
LIS
Lisbon
IAD
Washington
€520 Return, found 5 days ago
€520
Return
found 5 days ago
Select Air Canada flight, departing Thu, 11 Sep from Lisbon to Washington, returning Sat, 27 Sep, priced at €520 found 5 days ago
Brussels Airlines
Thu, 11 Sep - Fri, 26 Sep
LIS
Lisbon
IAD
Washington
€526 Return, found 5 days ago
€526
Return
found 5 days ago
Select Brussels Airlines flight, departing Thu, 11 Sep from Lisbon to Washington, returning Fri, 26 Sep, priced at €526 found 5 days ago
Delta
Thu, 11 Sep - Sat, 27 Sep
LIS
Lisbon
IAD
Washington
€529 Return, found 5 days ago
€529
Return
found 5 days ago
Select Delta flight, departing Thu, 11 Sep from Lisbon to Washington, returning Sat, 27 Sep, priced at €529 found 5 days ago

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

November is typically the cheapest month to fly

From €341 - €712 per traveller.

Graph displaying average flight prices per month

Lisbon to Washington route information
Origin airport
Humberto Delgado
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Iberia, JetBlue Airways, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic
Return price
€491
Distance
5732 km
Average flight time
3 hours 18 mins

Perfect flights from Lisbon to Washington

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Lisbon to Washington. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of Chantilly, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Humberto Delgado to Washington Dulles Intl. ticket options cater to your travel preferences, with incredible one-way fares from €323 and roundtrip prices from €491. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Washington Dulles Intl. and explore Chantilly and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your LIS to IAD travel arrangements today and embark on the journey of a lifetime in Washington.

Frequently asked questions

How much is a flight from Lisbon/Portela Airport to Washington Dulles Intl. Airport (IAD)?
Round-trip tickets between Lisbon Airport and Dulles Intl. Airport start from €491. This is based on fares listed within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Humberto Delgado Airport (LIS) to IAD?
When it comes to cancellation fees, every airline has different terms and conditions. If you decide to cancel your escape, head to our Customer Service Portal.
How do I find cheap flights from LIS to Dulles Intl. Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Lisbon Airport to IAD flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lisbon/Portela Airport to Dulles Intl. Airport?
With a flight distance of 5,800 kilometres from LIS (LIS) to Dulles Intl. Airport (IAD), this is a long flight. Ensure that you drink lots of water and go for a short walk down the aisle every so often.
Which airlines fly direct from Humberto Delgado Airport (LIS) to IAD?
Offering 30 flights each month, TAP Portugal (TP) is a great choice when flying directly from Lisbon/Portela Airport to IAD.
Are Humberto Delgado Airport (LIS) to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Humberto Delgado Airport (LIS) to Washington Dulles Intl. Airport (IAD) at the last minute could save you some serious cash. However, it could end up costing a good deal more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

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