Dulles Intl

$497+ Cheap flights from Lisbon (LIS) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — IAD
Nov 5 — Nov 121
1 adult
Tue 11/5
Tue 11/12
We work with more than 300 partners to bring you better travel deals

...and more

Find cheap flights from Lisbon to Dulles Intl with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl are usually found in January or February, booked 69 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from Lisbon to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Lisbon (LIS) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 31, 2024.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Popular in

July

Cheapest in

January

Round-trip from

$516
(Cheapflightsfares)

One-way from

$497
(Justfly.com)
Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. Dulles Intl flight deals.
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. Dulles Intl flights.
High demand for flights, 23% potential price rise
Best time to find cheap flights, 18% potential price drop
From Lisbon Humberto Delgado to Washington, D.C. Dulles Intl
One-way flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl

Find flight deals from Lisbon to Dulles Intl

Cheapest flights from Lisbon to Dulles Intl
Explore the most affordable flight options available from Lisbon to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/197:05 amLIS - IAD
1 stop13h 30mMultiple Airlines
Tue 11/269:55 pmIAD - LIS
1 stop11h 50mMultiple Airlines
Deal found 10/30$516
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/247:05 amLIS - IAD
1 stop13h 30mAmerican Airlines
Thu 12/59:55 pmIAD - LIS
1 stop15h 05mAmerican Airlines
Deal found 10/31$528
This Booking.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/195:00 amLIS - IAD
1 stop15h 50mLufthansa
Mon 12/305:50 pmIAD - LIS
1 stop12h 35mLufthansa
Deal found 10/30$534
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/236:10 amLIS - IAD
2 stops22h 49mUnited Airlines
Sun 11/2410:20 pmIAD - LIS
1 stop20h 10mUnited Airlines
Deal found 10/30$543
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/65:30 amLIS - IAD
1 stop15h 45mDelta
Tue 11/195:04 pmIAD - LIS
2 stops17h 06mDelta
Deal found 10/30$549
This oojo deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1910:45 amLIS - IAD
Nonstop8h 45mTAP AIR PORTUGAL
Tue 11/265:30 pmIAD - LIS
Nonstop7h 05mTAP AIR PORTUGAL
Deal found 10/30$551
This Booking.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/911:00 amLIS - IAD
1 stop13h 45mBritish Airways
Mon 11/255:48 pmIAD - LIS
2 stops16h 07mBritish Airways
Deal found 10/31$559
This KLM deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1111:25 amLIS - IAD
1 stop33h 20mKLM
Sun 12/1512:15 pmIAD - LIS
1 stop14h 45mKLM
Deal found 10/31$563
This SWISS deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2812:35 pmLIS - IAD
1 stop32h 50mSWISS
Sat 4/198:45 pmIAD - LIS
1 stop21h 25mSWISS
Deal found 10/31$565
This Virgin Atlantic deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/510:00 amLIS - IAD
1 stop11h 42mVirgin Atlantic
Fri 12/137:45 amIAD - LIS
2 stops20h 15mVirgin Atlantic
Deal found 10/30$573
This Bravofly deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/510:50 amLIS - IAD
1 stop13h 25mAer Lingus
Fri 12/135:10 pmIAD - LIS
1 stop12h 00mAer Lingus
Deal found 10/30$599
This Air France deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/226:30 pmLIS - IAD
2 stops27h 12mAir France
Sun 12/15:04 pmIAD - LIS
1 stop9h 56mAir France
Deal found 10/31$632

Find flights from Lisbon to Dulles Intl within your budget

Customize your flight search to find flights from Lisbon to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 11/12

10:50 am-7:45 pm

1 stop13h 55m

$497

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/9

1:50 pm-5:00 pm

3 stops32h 10m

$501

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 12/4

5:15 pm-9:00 pm

Nonstop8h 45m

$503

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 1/1

7:05 am-3:35 pm

1 stop13h 30m

$505

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 4/15

11:05 am-11:53 pm

2 stops17h 48m

$532

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 11/5

5:55 pm-6:30 pm

1 stop29h 35m

$561

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 2/22

11:15 am-12:09 am

2 stops17h 54m

$565

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 11/24

4:00 pm-12:15 pm

1 stop25h 15m

$609

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 11/25

11:55 am-3:35 pm

Nonstop8h 40m

$615

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/2

11:00 am-11:55 am

2 stops29h 55m

$735

Flights are sorted by cheapest first

Deals found on 10/31

Showing 1-10 of 33 results
1
2
3
4

Compare providers for flights from Lisbon to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lisbon to Dulles Intl in October.
ProviderPrice AccuracyTrust Score*Cancellation Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
AranGrantPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
PricelinePrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Lisbon-Washington, D.C. Dulles Intl Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Lisbon-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Lisbon-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lisbon-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lisbon-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Lisbon to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Lisbon with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Lisbon to Dulles Intl

Get recent, data-driven insights about flights from Lisbon to Dulles Intl including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Lisbon to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Lisbon to Dulles Intl. Price data was last updated on October 25, 2024.

To ensure you get the cheapest price possible for a flight from Lisbon to Washington, D.C. Dulles Intl Airport, you should look to book at least 68 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Lisbon to Washington, D.C. Dulles Intl Airport?

Currently, December is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $298). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LIS to IAD?

Find hourly flight availability from Lisbon to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 31, 2024.

It’s typically best to fly out from Lisbon to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 9% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated October 31, 2024.
See what other customers who have flown with Aer Lingus, Delta and United Airlines from Lisbon to Washington, D.C. have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
8,835 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very good
8,835 reviews
8.0
Very good
8,835 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.8
Good
1,352 reviews
8.0
Very good
8,835 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.7
Good
1,318 reviews
8.0
Very good
8,835 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.7
Good
831 reviews
8.0
Very good
8,835 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.6
Good
1,644 reviews
8.0
Very good
8,835 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Lisbon to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Lisbon to Washington, D.C. Dulles Intl?

    Most people fly from Lisbon Humberto Delgado (LIS) if they book a flight from Lisbon to Washington, D.C. Dulles Intl. On average, Humberto Delgado has 1 outbound flight to Washington, D.C. Dulles Intl per day from 4 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.

  • Can I find flights from Lisbon to Washington, D.C. Dulles Intl Airport for under $600 on Cheapflights?

    Yes, there are multiple flights from Lisbon to Washington, D.C. Dulles Intl Airport for under $600. The cheapest flight booked recently is on Multiple Airlines for just $516, but on average you can expect to pay $565.

  • Are there nonstop flights from Lisbon to Washington, D.C. Dulles Intl Airport for under $600 on Cheapflights?

    Cheapflights has at least 5 direct flights from Lisbon to Washington, D.C. Dulles Intl Airport under $600. A good price for a nonstop flight from Lisbon to Washington, D.C. Dulles Intl Airport is less than $894.

  • Are there last-minute flights available from Lisbon to Washington, D.C. Dulles Intl Airport for under $600?

    There are currently 14+ open flights from Lisbon to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $600.

  • What days are nonstop flights available from Lisbon to Washington, D.C. Dulles Intl Airport?

    Days when nonstop flights are available for this flight are: Sunday, Thursday, Friday.

  • How many flights depart from Lisbon to Washington, D.C. Dulles Intl Airport on average per day?

    Travelers can expect 4 flights from Lisbon to Washington, D.C. Dulles Intl Airport on average per day.
    Morning (6am - Noon) - 100% of flight departures

  • How long is the flight from Lisbon to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Lisbon to Washington, D.C. Dulles Intl Airport in 8h 45m. Fly via TAP AIR PORTUGAL, Delta, or Air France to get the fastest option. The distance from Lisbon to Washington, D.C. Dulles Intl Airport is about 3602 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Lisbon to Washington, D.C. Dulles Intl Airport round-trip?

    Cheapflights users have booked flights from Lisbon to Washington, D.C. Dulles Intl Airport round-trip from $520. Other airlines that can offer you cheap pricing are Delta, from $527, and Air France, from $530. TAP AIR PORTUGAL is priced at 29% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Lisbon to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $497. TAP AIR PORTUGAL flights start at $503 while deals on British Airways start at $505 one-way.

  • What are the most reliable airlines from Lisbon to Washington, D.C. Dulles Intl Airport?

    Consider Air Canada (71%), United Airlines (71%) or Lufthansa (71%) when booking your flight. These represent the most reliable airlines when flying from Lisbon to Washington, D.C. Dulles Intl Airport.

  • What are the cheapest flights from Lisbon to Washington, D.C. Dulles Intl Airport?

    Looking for the cheapest flight from Lisbon to Washington, D.C. Dulles Intl Airport? While on average our users pay $1,603, our data indicates the cheapest price to be $567. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $426.

  • What does LIS to IAD mean?

    This is defined as Lisbon Humberto Delgado Airport (LIS) and Washington, D.C. Dulles Intl Airport (IAD). Codes like Washington, D.C. Dulles Intl Airport are often used to just call airports uniquely.

  • Can I find deals for flights from Lisbon to Dulles Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Lisbon to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Lisbon to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Lisbon to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Lisbon to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Lisbon to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Lisbon to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Dulles Intl.

  • Can I find deals for business class flights from Lisbon to Dulles Intl?

    Yes. Cheapflights offers flight deals from Lisbon to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Lisbon to Dulles Intl that allow pets onboard?

    Many airlines flying from Lisbon to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Lisbon to Dulles Intl?

    Yes, you can often find last-minute deals on Lisbon to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Lisbon to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Lisbon to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 10/31.

  • What is the cheapest month to book a flight from Lisbon to Washington, D.C. Dulles Intl Airport?

    Currently, December is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $298). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Lisbon to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Lisbon to Dulles Intl

Discover the top 4 airlines that operate flights from Lisbon to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,570,725 searches. Data last updated October 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$511Average$718FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$562Average$739FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$585Average$779FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$617Average$626FlexibilityNo cancel feeOn-time77%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.