€334 Cheap Flights Washington to Lisbon (IAD-LIS)

View €334 flight on Fri, 14 Nov 2025Opens in a new window

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

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Cheap flights from Washington to Lisbon (IAD-LIS)

Prices were available within the past 7 days and start at €334 for one-way flights and €546 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Wed, 6 May - Sun, 10 May
IAD
Washington
LIS
Lisbon
€546 Return, found 5 days ago
€546
Return
found 5 days ago
Select TAP Portugal flight, departing Wed, 6 May from Washington to Lisbon, returning Sun, 10 May, priced at €546 found 5 days ago
TAP Portugal
Thu, 23 Oct - Fri, 31 Oct
IAD
Washington
LIS
Lisbon
€552 Return, found 3 hours ago
€552
Return
found 3 hours ago
Select TAP Portugal flight, departing Thu, 23 Oct from Washington to Lisbon, returning Fri, 31 Oct, priced at €552 found 3 hours ago
Royal Air Maroc
Wed, 6 May - Sun, 10 May
IAD
Washington
LIS
Lisbon
€633 Return, found 5 days ago
€633
Return
found 5 days ago
Select Royal Air Maroc flight, departing Wed, 6 May from Washington to Lisbon, returning Sun, 10 May, priced at €633 found 5 days ago
Royal Air Maroc
Wed, 6 May - Sun, 10 May
IAD
Washington
LIS
Lisbon
€656 Return, found 5 days ago
€656
Return
found 5 days ago
Select Royal Air Maroc flight, departing Wed, 6 May from Washington to Lisbon, returning Sun, 10 May, priced at €656 found 5 days ago
Icelandair
Wed, 6 May - Sun, 10 May
IAD
Washington
LIS
Lisbon
€669 Return, found 5 days ago
€669
Return
found 5 days ago
Select Icelandair flight, departing Wed, 6 May from Washington to Lisbon, returning Sun, 10 May, priced at €669 found 5 days ago
Turkish Airlines
Thu, 2 Apr - Mon, 6 Apr
IAD
Washington
LIS
Lisbon
€670 Return, found 3 days ago
€670
Return
found 3 days ago
Select Turkish Airlines flight, departing Thu, 2 Apr from Washington to Lisbon, returning Mon, 6 Apr, priced at €670 found 3 days ago
Scandinavian Airlines
Thu, 25 Dec - Sun, 11 Jan
IAD
Washington
LIS
Lisbon
€703 Return, found 1 day ago
€703
Return
found 1 day ago
Select Scandinavian Airlines flight, departing Thu, 25 Dec from Washington to Lisbon, returning Sun, 11 Jan, priced at €703 found 1 day ago
Delta
Thu, 2 Jul - Tue, 7 Jul
IAD
Washington
LIS
Lisbon
€893 Return, found 5 days ago
€893
Return
found 5 days ago
Select Delta flight, departing Thu, 2 Jul from Washington to Lisbon, returning Tue, 7 Jul, priced at €893 found 5 days ago
British Airways
Thu, 25 Dec - Sun, 11 Jan
IAD
Washington
LIS
Lisbon
€917 Return, found 1 day ago
€917
Return
found 1 day ago
Select British Airways flight, departing Thu, 25 Dec from Washington to Lisbon, returning Sun, 11 Jan, priced at €917 found 1 day ago
KLM
Thu, 2 Jul - Tue, 7 Jul
IAD
Washington
LIS
Lisbon
€941 Return, found 5 days ago
€941
Return
found 5 days ago
Select KLM flight, departing Thu, 2 Jul from Washington to Lisbon, returning Tue, 7 Jul, priced at €941 found 5 days ago

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

February is typically the cheapest month to fly

From €399 - €769 per traveller.

Frequently asked questions

How much is a flight from IAD to LIS?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from IAD to Lisbon/Portela Airport was €546. Fares this good don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to Humberto Delgado Airport (LIS)?
This differs from airline to airline, as each has its own set of terms and conditions. Visit the Customer Service Portal, where you'll find simple instructions on how to cancel online.
How do I find cheap flights from Dulles Intl. Airport to Humberto Delgado Airport (LIS) 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 IAD to LIS flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Lisbon/Portela Airport?
You'll have 5,800 kilometres to cover on the long-haul Chantilly to Lisbon District route. Dress in layers of comfortable clothes and consider taking a pair of noise-cancelling earphones.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Humberto Delgado Airport (LIS)?
Flying directly from IAD to LIS is simple with TAP Portugal (TP). This popular airline operates 30 flights every month.
Are Dulles Intl. Airport to Lisbon Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so there are no guarantees. While last-minute flight deals between IAD and Humberto Delgado Airport (LIS) are possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some airlines advertise their prices up to a year ahead of the departure date. Expedia is continuously updating the best airfare bargains around, so keep checking back and be ready to lock in your seat when fare prices drop.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Humberto Delgado
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, JetBlue Airways, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Return price
€546
Distance
5732 km
Average flight time
12 hours 18 mins

Book with confidence

Perfect flights from Washington to Lisbon

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Washington to Lisbon. 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 , 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 Washington Dulles Intl. to Humberto Delgado ticket options cater to your travel preferences, with incredible one-way fares from €334 and roundtrip prices from €546. 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 Humberto Delgado and explore 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 to travel arrangements today and embark on the journey of a lifetime in Lisbon.
Perfect flights from Washington to Lisbon

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