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Dulles Intl

$484+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — IAD
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
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The best prices from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl are usually found in November or April, booked 70 days in advance, depart on a Wednesday or Thursday 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 December 19, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$505
(AirNGo)

One-way from

$484
(Cheapflightsfares)

Popular in

July

Cheapest in

November

Average price

$677
Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. Dulles Intl flights.
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From Lisbon Humberto Delgado to Washington, D.C. Dulles Intl
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One-way flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl
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High demand for flights, 17% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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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 December 19, 2024.

This KLM deal was found by Cheapflights users on 12/17. 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.
Fri 12/273:25 pmLIS - IAD
1 stop29h 20mMultiple Airlines
Tue 1/146:30 pmIAD - LIS
1 stop11h 50mMultiple Airlines
Deal found 12/17$540
This Delta deal was found by Cheapflights users on 12/17. 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.
Fri 12/2710:00 amLIS - IAD
1 stop11h 47mDelta
Tue 1/1412:05 pmIAD - LIS
2 stops18h 15mDelta
Deal found 12/17$551
This Virgin Atlantic deal was found by Cheapflights users on 12/17. 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.
Fri 12/2710:00 amLIS - IAD
1 stop11h 47mVirgin Atlantic
Tue 1/146:00 amIAD - LIS
2 stops21h 00mVirgin Atlantic
Deal found 12/17$554
This AirNGo deal was found by Cheapflights users on 12/18. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2310:00 amLIS - IAD
1 stop11h 47mKLM
Mon 1/2012:52 pmIAD - LIS
2 stops14h 08mKLM
Deal found 12/18$592
This Ovago deal was found by Cheapflights users on 12/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:45 pmLIS - IAD
2 stops25h 50mBritish Airways
Tue 12/311:53 pmIAD - LIS
2 stops14h 22mBritish Airways
Deal found 12/18$622
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Fri 12/2711:00 amLIS - IAD
2 stops29h 38mUnited Airlines
Tue 1/146:05 amIAD - LIS
2 stops22h 15mUnited Airlines
Deal found 12/17$632
This Lufthansa deal was found by Cheapflights users on 12/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2111:55 amLIS - IAD
Nonstop8h 40mLufthansa
Sat 12/2810:05 pmIAD - LIS
Nonstop6h 55mLufthansa
Deal found 12/18$810
This Priceline deal was found by Cheapflights users on 12/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2410:45 amLIS - IAD
Nonstop8h 45mTAP AIR PORTUGAL
Tue 12/315:30 pmIAD - LIS
Nonstop7h 05mTAP AIR PORTUGAL
Deal found 12/18$881
This Lufthansa deal was found by Cheapflights users on 12/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/215:35 amLIS - IAD
1 stop15h 50mSWISS
Sat 12/288:45 pmIAD - LIS
1 stop12h 50mSWISS
Deal found 12/18$923
This American Airlines deal was found by Cheapflights users on 12/18. 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.
Thu 12/198:55 amLIS - IAD
2 stops20h 07mAmerican Airlines
Tue 12/246:00 pmIAD - LIS
1 stop13h 05mAmerican Airlines
Deal found 12/18$985
This Brussels Airlines deal was found by Cheapflights users on 12/18. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/211:45 pmLIS - IAD
2 stops30h 10mBrussels Airlines
Sat 12/285:50 pmIAD - LIS
1 stop14h 00mBrussels Airlines
Deal found 12/18$1,404
This Justfly.com deal was found by Cheapflights users on 12/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1910:55 amLIS - IAD
2 stops34h 03mAir Canada
Sat 12/213:55 pmIAD - LIS
2 stops14h 05mAir Canada
Deal found 12/18$1,708

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 2,558,603 searches. Data last updated December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 1/25

5:00 am-3:45 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Sat 2/8

12:05 pm-11:20 am

2 stops18h 15m

$510

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 1/25

7:00 am-3:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Sat 2/8

6:00 pm-12:10 pm

1 stop13h 10m

$512

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/23

3:25 pm-3:45 pm

1 stop29h 20m

Washington, D.C. Dulles Intl

Wed 2/5

12:05 pm-8:00 am

1 stop14h 55m

$514

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/23

11:15 am-3:00 pm

Nonstop8h 45m

Washington, D.C. Dulles Intl

Wed 2/5

10:30 pm-10:35 am

Nonstop7h 05m

$534

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/23

5:00 am-8:20 pm

1 stop20h 20m

Washington, D.C. Dulles Intl

Wed 2/5

5:45 pm-8:10 am

1 stop9h 25m

$545

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 1/31

6:10 am-3:55 pm

1 stop14h 45m

Washington, D.C. Dulles Intl

Sun 2/16

5:50 pm-3:05 pm

1 stop16h 15m

$552

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 5/16

6:35 am-5:30 pm

2 stops15h 55m

Washington, D.C. Dulles Intl

Mon 5/26

5:50 pm-3:40 pm

1 stop16h 50m

$578

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 1/25

6:10 am-2:35 pm

2 stops37h 25m

Washington, D.C. Dulles Intl

Sun 3/9

7:00 pm-11:30 pm

2 stops24h 30m

$599

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 5/7

5:55 am-2:15 pm

2 stops37h 20m

Washington, D.C. Dulles Intl

Fri 5/16

8:45 pm-1:45 pm

2 stops36h 00m

$690

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 3/15

1:45 pm-2:55 pm

2 stops29h 10m

Washington, D.C. Dulles Intl

Thu 3/27

6:45 pm-4:00 pm

2 stops17h 15m

$694

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 25 results
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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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Lisbon-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 December 13, 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 70 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, November is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $299). 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 December 19, 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 2% on the flight price compared to flying at noon, which is usually more expensive.

Weekly flight availability from Lisbon to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Lisbon to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 19, 2024.

The most flights from LIS to IAD are scheduled on a Monday (5 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

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 December 19, 2024.
See what other customers who have flown with United Airlines, British Airways and Delta 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.
Emirates
8.1
Very good
3,410 reviews

Boarding

8.1

Overall

8.1

Food

7.9

Entertainment

8.2

Comfort

8.0

Crew

8.3

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Emirates
8.1
Very good
3,410 reviews
Emirates
8.1
Very good
3,410 reviews

Boarding

8.1

Overall

8.1

Food

7.9

Entertainment

8.2

Comfort

8.0

Crew

8.3

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Delta
8.0
Very good
8,600 reviews
Emirates
8.1
Very good
3,410 reviews

Boarding

8.1

Overall

8.1

Food

7.9

Entertainment

8.2

Comfort

8.0

Crew

8.3

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

KLM
7.8
Good
1,349 reviews
Emirates
8.1
Very good
3,410 reviews

Boarding

8.1

Overall

8.1

Food

7.9

Entertainment

8.2

Comfort

8.0

Crew

8.3

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Finnair
7.7
Good
1,285 reviews
Emirates
8.1
Very good
3,410 reviews

Boarding

8.1

Overall

8.1

Food

7.9

Entertainment

8.2

Comfort

8.0

Crew

8.3

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

SWISS
7.6
Good
1,605 reviews
Emirates
8.1
Very good
3,410 reviews

Boarding

8.1

Overall

8.1

Food

7.9

Entertainment

8.2

Comfort

8.0

Crew

8.3

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

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 3 outbound flights to Washington, D.C. Dulles Intl per day from 3 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.

  • 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 $510. Other airlines that can offer you cheap pricing are KLM, from $512, and TAP AIR PORTUGAL, from $531. Delta is priced at 32% 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 Finnair, which is currently one of the cheapest options available, starting at $484. British Airways flights start at $488 while deals on Royal Air Maroc start at $496 one-way.

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

    Consider Air Canada (84%), United Airlines (84%) or Lufthansa (84%) 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 $1,240, our data indicates the cheapest price to be $517. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $457.

  • 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.

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

    Currently, November is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $299). 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

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Alternative routes for Lisbon to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to Baltimore flights
Lisbon to Reagan-National flights
Porto to Reagan-National flights
Porto to Dulles Intl flights
Porto to Baltimore flights

Top 3 airlines flying from Lisbon to Dulles Intl

Discover the top 3 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 2,558,603 searches. Data last updated December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$530Average$719FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$536Average$779FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$543Average$711FlexibilityNo cancel feeOn-time69%
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