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$434 Cheap Flights from Lisbon (LIS) to Washington (IAD)

View $434 flight on Thu, Dec 10, 2026Opens 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 $434 for one-way flights and $471 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Mon, Dec 14 - Mon, Dec 28
LIS
Lisbon
IAD
Washington
$471 Roundtrip, just found
$471
Roundtrip
just found
Select Iberia flight, departing Mon, Dec 14 from Lisbon to Washington, returning Mon, Dec 28, priced at $471 just found
American Airlines
Thu, Nov 19 - Thu, Dec 3
LIS
Lisbon
IAD
Washington
$475 Roundtrip, found 2 hours ago
$475
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Thu, Nov 19 from Lisbon to Washington, returning Thu, Dec 3, priced at $475 found 2 hours ago
Iberia
Thu, Nov 19 - Thu, Dec 3
LIS
Lisbon
IAD
Washington
$482 Roundtrip, found 2 hours ago
$482
Roundtrip
found 2 hours ago
Select Iberia flight, departing Thu, Nov 19 from Lisbon to Washington, returning Thu, Dec 3, priced at $482 found 2 hours ago
British Airways
Mon, Dec 14 - Mon, Dec 28
LIS
Lisbon
IAD
Washington
$504 Roundtrip, just found
$504
Roundtrip
just found
Select British Airways flight, departing Mon, Dec 14 from Lisbon to Washington, returning Mon, Dec 28, priced at $504 just found
TAP Portugal
Thu, Oct 8 - Sat, Oct 17
LIS
Lisbon
IAD
Washington
$598 Roundtrip, found 2 days ago
$598
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Thu, Oct 8 from Lisbon to Washington, returning Sat, Oct 17, priced at $598 found 2 days ago
Aer Lingus
Mon, May 24 - Mon, May 31
LIS
Lisbon
IAD
Washington
$609 Roundtrip, found 15 hours ago
$609
Roundtrip
found 15 hours ago
Select Aer Lingus flight, departing Mon, May 24 from Lisbon to Washington, returning Mon, May 31, priced at $609 found 15 hours ago
Finnair
Mon, Dec 14 - Mon, Dec 28
LIS
Lisbon
IAD
Washington
$620 Roundtrip, just found
$620
Roundtrip
just found
Select Finnair flight, departing Mon, Dec 14 from Lisbon to Washington, returning Mon, Dec 28, priced at $620 just found
Royal Air Maroc
Mon, May 24 - Mon, May 31
LIS
Lisbon
IAD
Washington
$666 Roundtrip, found 15 hours ago
$666
Roundtrip
found 15 hours ago
Select Royal Air Maroc flight, departing Mon, May 24 from Lisbon to Washington, returning Mon, May 31, priced at $666 found 15 hours ago
United
Thu, Nov 19 - Thu, Dec 3
LIS
Lisbon
IAD
Washington
$703 Roundtrip, found 2 hours ago
$703
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Nov 19 from Lisbon to Washington, returning Thu, Dec 3, priced at $703 found 2 hours ago
Lufthansa
Tue, Oct 20 - Thu, Apr 15
LIS
Lisbon
IAD
Washington
$704 Roundtrip, found 1 day ago
$704
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Tue, Oct 20 from Lisbon to Washington, returning Thu, Apr 15, priced at $704 found 1 day ago

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 center is 8 minutes. Flights from $979
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $979

What you need to know for your flight from Humberto Delgado to Washington Dulles Intl.

Lisbon (LIS) to Washington (IAD) at a glance

Travel between Lisbon (LIS) and Washington (IAD) with a range of airlines offering international long-haul flights. Compare various options, including full-service and budget carriers, to discover itineraries that align with your travel plans, budget, and schedule. As you prepare to explore Washington's iconic landmarks and vibrant neighborhoods, gather essential information on flights from Humberto Delgado Airport (LIS) to Washington Dulles International Airport (IAD) to make your journey seamless.

  • Fastest flight duration: around 8h 15m non-stop
  • Route distance: roughly 3,600 miles (5,790 km)
  • Flights per week: around 11 departures on average
  • Typical fares (one-way): economy tickets often range from $350–$1055, depending on seasonality and how far ahead you book

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

According to recent traveler bookings, the top airlines flying from Lisbon to Washington are favored for both non-stop and one-stop flights. Common layover spots include Mohammed V Airport (CMN) with approximately a 2h 30m stop, Heathrow Airport (LHR) offering around 2h 45m, and Dublin Airport (DUB) with a similar 2h 30m layover. These options allow you to customize your journey by considering price, total travel time, and cabin class for the ideal itinerary.

  • TAP Portugal: This full-service airline provides non-stop flights, holding a significant share of about 60% of departures on this route. One-way ticket prices generally range from $355 to $1905, with a total travel time of 8 hours and 15 minutes.
  • Lufthansa: Offering both non-stop and one-stop options, this full-service carrier accounts for roughly 12% of flights on this route. One-way fares typically fall between $350 and $1640, with a standard non-stop journey lasting 8 hours and 15 minutes.
  • United: As a comprehensive service airline, United provides non-stop as well as one-stop flights, making up approximately 9% of departures on this route. Expect one-way fares ranging from $350 to $2895, with a typical non-stop travel duration of 8 hours and 15 minutes.
  • Royal Air Maroc: This full-service airline offers one-stop service, representing about 4% of departures for this route. One-way fares usually range from $520 to $1035, with an in-flight duration of 10 hours and 45 minutes, and a total journey time of around 13 hours and 30 minutes, including a layover.
  • British Airways: A full-service carrier providing one-stop service, British Airways constitutes about 4% of route departures. One-way fares typically range from $350 to $795, with an in-flight time of 10 hours and 45 minutes, and a total travel time of approximately 13 hours and 30 minutes, factoring in a layover.

Travelers flying from Lisbon to Washington can opt for an upgraded experience, with both TAP Portugal and United offering business class service for this route.

Alternative route from Lisbon (LIS) to Washington (IAD)

  • Lisbon to Washington (LIS-DCA): Ronald Reagan Washington National Airport (DCA) is located approximately 23 miles from Washington Dulles International Airport (IAD). On this route, one-way economy ticket prices generally vary from $315 to $1025, influenced by the season and when you book. Typically, travelers will find one-stop flights available, with common layover points at Philadelphia International Airport (PHL) and Newark Liberty International Airport (EWR). Major airlines operating this route include British Airways and American Airlines. Additionally, business class service is offered on this route.

How to find the best prices for flights from Lisbon (LIS) to Washington (IAD)

Getting some of the best deals on flights from Lisbon to Washington is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, although most travelers tend to book at least 2 months ahead. Morning departures from 5 am to 12 pm often offer lower prices, while afternoon flights from 12 pm to 6 pm are more popular. Additionally, flying on Wednesday typically results in cheaper prices, even though Sunday is the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Washington Dulles International Airport from Humberto Delgado Airport

Washington welcomes travelers from Lisbon with a range of transport options based on price, convenience, and proximity. Washington city center is approximately a 40-minute drive (covering about 29 miles) from Washington Dulles International Airport, depending on traffic. Here's how to reach Washington efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Washington, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Washington Dulles International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Washington Dulles International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Washington Dulles International Airport, the Washington Dulles International Airport Metrorail Station, a metro station, is located about 0.2 miles away on foot, providing easy access to rail services.

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 $434 and cheap return flights from $471 Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) with Expedia. One-way flights usually range from $566 to $7313, and return flights typically cost between $726 and $6083. 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 Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
September is the cheapest month to fly from Lisbon to Washington, DC, with average return fares around $643. This is about 12% lower than the average price throughout the year, as demand typically decreases after the summer travel season. Other economical months to consider are March and April.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
Choose from 2 airlines operating direct flights from LIS to IAD:

  • TAP Portugal operates around 10 direct flights from LIS to IAD every week
  • United operates around 7 direct flights from LIS to IAD every week

What is the cheapest airline that flies from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
JetBlue Airways is one of the cheapest airlines offering nonstop flights from Humberto Delgado (LIS) to Washington Dulles Intl. (IAD), with round-trip tickets starting from around $1,469. 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.*Prices based on flights available on Expedia in the last year.
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) to Washington, DC (IAD) 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, TAP Portugal typically offers the lowest fares. TAP Portugal also offers the most daily flights from LIS to IAD, 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 best times to fly from Lisbon (LIS) to Washington, DC (IAD) are typically April and September. In April, you can expect prices around $643 for a return flight, making it a budget-friendly option. September is also popular, offering a great balance of moderate prices and pleasant weather, which enhances your travel experience. This information is based on booking data from the past year.*Prices based on flights available on Expedia in the last year.
How many flights per day from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
There are approximately 2 nonstop flights per day from Humberto Delgado (LIS) to Washington Dulles Intl. (IAD). For more options, look at flights that include layovers.
What is the earliest flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Humberto Delgado Airport (LIS) to Washington Dulles International Airport (IAD) typically departs at around 5:00 AM, operated by KLM and Air France. This seasonal service is active in May, allowing you to start your day early in Washington, DC. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
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 late morning, from 9am to noon. About 31% of passengers prefer this time window. Many major carriers, including United and TAP Portugal, operate flights during this period. This timing is popular as it allows you to arrive in Washington, DC with a full day ahead to explore.
How long does it take to fly from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
Flying nonstop from LIS to IAD takes around 8 hours 30 minutes, with the route covering approximately 3,583 miles. Flights with a layover typically take 5 hours longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
Business class is available on flights from LIS to IAD. Airlines that offer business class service on this route include:

  • British Airways
  • TAP Portugal
  • United Airlines
  • Turkish Airlines
  • Lufthansa
  • Air Canada
  • Brussels Airlines
  • Swiss International Air Lines
  • Iberia
  • Delta Air Lines

First class is available with Emirates.
How much is a business class flight from Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.)?
A direct, return business class ticket from Lisbon (LIS) to Washington, DC (IAD) typically costs between $4,108 - $10,337. A non-stop, one-way business class flight is usually around $2,932 - $3,178. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Lisbon (LIS-Humberto Delgado) to Washington, DC (IAD-Washington Dulles Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
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 from Humberto Delgado (LIS)?
From Humberto Delgado (LIS), you can fly into Washington Dulles Intl. (IAD) and Ronald Reagan Washington National (DCA) in Washington. Some flights may connect through major hubs like Adolfo Suarez Madrid-Barajas (MAD), Philadelphia Intl. (PHL), Heathrow (LHR) 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.) Fairfax County Vacation Packages 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, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$471
Distance
3582 mi
Average flight time
3 hours 16 mins

*Flight schedules are subject to change.

*Available to One Key members.

 

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