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£270 Cheap Flights from Lisbon (LIS) to Washington (IAD)

View £270 flight on Thu, 8 Apr 2027Opens in a new window

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

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Cheap Flights from Lisbon (LIS) to Washington (IAD)

Prices were available within the past 7 days and start at £270 for one-way flights and £459 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Thu, 17 Sept - Thu, 24 Sept
LIS
Lisbon
IAD
Washington
£459 Return, found 2 hours ago
£459
Return
found 2 hours ago
Select Iberia flight, departing Thu, 17 Sept from Lisbon to Washington, returning Thu, 24 Sept, priced at £459 found 2 hours ago
Aer Lingus
Thu, 17 Sept - Thu, 24 Sept
LIS
Lisbon
IAD
Washington
£472 Return, found 2 hours ago
£472
Return
found 2 hours ago
Select Aer Lingus flight, departing Thu, 17 Sept from Lisbon to Washington, returning Thu, 24 Sept, priced at £472 found 2 hours ago
British Airways
Thu, 17 Sept - Thu, 24 Sept
LIS
Lisbon
IAD
Washington
£473 Return, found 2 hours ago
£473
Return
found 2 hours ago
Select British Airways flight, departing Thu, 17 Sept from Lisbon to Washington, returning Thu, 24 Sept, priced at £473 found 2 hours ago
Swiss International Air Lines
Tue, 18 Aug - Tue, 25 Aug
LIS
Lisbon
IAD
Washington
£475 Return, found 6 days ago
£475
Return
found 6 days ago
Select Swiss International Air Lines flight, departing Tue, 18 Aug from Lisbon to Washington, returning Tue, 25 Aug, priced at £475 found 6 days ago
Lufthansa
Tue, 18 Aug - Tue, 25 Aug
LIS
Lisbon
IAD
Washington
£489 Return, found 6 days ago
£489
Return
found 6 days ago
Select Lufthansa flight, departing Tue, 18 Aug from Lisbon to Washington, returning Tue, 25 Aug, priced at £489 found 6 days ago
Air France
Thu, 17 Sept - Thu, 24 Sept
LIS
Lisbon
IAD
Washington
£491 Return, found 2 hours ago
£491
Return
found 2 hours ago
Select Air France flight, departing Thu, 17 Sept from Lisbon to Washington, returning Thu, 24 Sept, priced at £491 found 2 hours ago
Royal Air Maroc
Thu, 19 Nov - Wed, 25 Nov
LIS
Lisbon
IAD
Washington
£501 Return, found 6 days ago
£501
Return
found 6 days ago
Select Royal Air Maroc flight, departing Thu, 19 Nov from Lisbon to Washington, returning Wed, 25 Nov, priced at £501 found 6 days ago
TAP Portugal
Thu, 17 Sept - Thu, 24 Sept
LIS
Lisbon
IAD
Washington
£503 Return, found 2 hours ago
£503
Return
found 2 hours ago
Select TAP Portugal flight, departing Thu, 17 Sept from Lisbon to Washington, returning Thu, 24 Sept, priced at £503 found 2 hours ago
KLM
Thu, 17 Sept - Thu, 24 Sept
LIS
Lisbon
IAD
Washington
£517 Return, found 2 hours ago
£517
Return
found 2 hours ago
Select KLM flight, departing Thu, 17 Sept from Lisbon to Washington, returning Thu, 24 Sept, priced at £517 found 2 hours ago
United
Thu, 31 Dec - Wed, 6 Jan
LIS
Lisbon
IAD
Washington
£545 Return, just found
£545
Return
just found
Select United flight, departing Thu, 31 Dec from Lisbon to Washington, returning Wed, 6 Jan, priced at £545 just found

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city centre is 8 minutes. Flights from £610
DCA
Ronald Reagan Washington National
Closest
Average driving time to city centre8 min
Flights from £610

Frequently asked questions

How much does a flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) cost?
You can find cheap one-way flights from £270 and cheap return flights from £459 LIS to IAD with Expedia. One-way flights typically cost between £678 and £2860, and return flights often range between £567 and £4439. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when LIS to IAD ticket fares go up or down.
What is the cheapest month to fly from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
If you're looking for the cheapest time to fly from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.), September is typically your best bet. You can expect average return fares around £481 during this month. September often sees lower prices as the peak summer travel season winds down, and demand decreases. Other budget-friendly months to consider for this route include March and April.
Which airlines fly direct from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
There are 2 airlines offering direct flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.). These are:
  • TAP Portugal operates 14 direct flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) every week.
  • United operates 7 direct flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) every week.
What is the cheapest airline that flies from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
Turkish Airlines offers one of the cheapest connecting return flights on this route, with tickets starting from around £655. TAP Portugal is one of the cheapest airlines offering nonstop return flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.), with tickets starting from around £849 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
To find a cheap flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
The best airline to fly with from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) will differ from traveler to traveler. If you like to fly early, TAP Portugal offers early morning flights. If price is the most important factor, JetBlue Airways typically offers the lowest fares. TAP Portugal offers the most daily flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
The cheapest months to fly from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) are typically September and April, with average return flights around £481. However, the most popular months for this route are January and March, meaning you'll find plenty of flight options during those times. If you're looking for the best balance of good fares and a wide selection of flights, you might consider travelling in September or April for better value, or January and March if having more flight choices is your priority.
How many flights per day from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
You'll find approximately 3 nonstop flights per day from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.). For even more choices, look at flights that include layovers, as there are around 87 connecting flights per day. Some common connection points include Heathrow (LHR), Adolfo Suarez Madrid-Barajas (MAD), and Frankfurt Intl. (FRA).
What is the earliest flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) typically departs around 5:00 AM. This service is offered by airlines such as KLM and Air France. This is a seasonal service, active in March, May, and June. An early departure like this can be really convenient, allowing you to maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
You'll typically find the most flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) on a Wednesday, with around 58 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include TAP Portugal, British Airways, and Iberia. Flight schedules are fairly consistent throughout the week, so you'll have plenty of choices regardless of your travel day.
What are the most popular departure times for flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
The most popular departure times for flights from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) are in the morning, from 6am to 9am. Many major carriers, including Lufthansa, British Airways and Iberia, offer flights during this window. Many travellers prefer this time as it allows for an early start to their journey.
How long does it take to fly from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
A direct flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) typically takes around 8 hours 30 minutes. This route covers a distance of approximately 5,766 kilometers. If you opt for a flight with one stop, your journey will usually be longer, taking about 13 hours 30 minutes. Flights with two or more stops generally take even longer, around 18 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.
Can you fly business or first class from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
Yes, you can fly business class or first class between Lisbon (LIS) and Washington, DC (IAD).Airlines that offer business class service on this route include:
  • British Airways
  • Lufthansa
  • Air France
  • Iberia
  • Emirates
  • Swiss International Air Lines
  • TAP Portugal
  • Brussels Airlines
  • SAS
  • Turkish Airlines
  • Air Canada
  • KLM
  • Royal Air Maroc
  • Delta
  • United
  • (multiple carriers)
  • Air Europa
  • Portugalia

First class cabins are available on Emirates.
How do I earn miles on a Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia?
It's easy to earn miles on a Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington, DC (IAD) from Lisbon (LIS)?
If you're planning to travel to Washington from Humberto Delgado (LIS), you can fly directly into Washington Dulles Intl. (IAD). Some flights may connect through major hubs like Adolfo Suarez Madrid-Barajas (MAD), Heathrow (LHR), or Philadelphia Intl. (PHL) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute?
Typically, booking a last minute flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package?
Securing a Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
If you booked your Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Humberto Delgado
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, British Airways, Brussels Airlines, Finnair, Iberia, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines
Return price
£459
Distance
5732 km
Average flight time
3 hours 15 mins

Book with confidence

Compare flights from Lisbon to Washington easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Lisbon to Washington. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Washington Dulles Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Humberto Delgado to Washington Dulles Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Humberto Delgado (LIS) to Washington Dulles Intl. (IAD)

The easiest way to view the best deals on flights from Lisbon to Washington today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Humberto Delgado to Washington Dulles Intl. start at just £459 and range up to £545.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Lisbon and Washington
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Lisbon to Washington flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Humberto Delgado to Washington Dulles Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Lisbon to Washington easily and book with confidence

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