Which airline has the best punctuality record on Lisbon to Washington, D.C. flights?

Over the last year, Air Canada have had the lowest number of delays on this route, with just 26% of flights being delayed.

What is the most punctual flight time for Lisbon to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

How often are flights from Lisbon to Washington, D.C. delayed?

About 30% of weekly flights between Lisbon and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

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 16h 05m. Fly via Delta to get the fastest option. The distance from Lisbon to Washington, D.C. Dulles Intl Airport is about 3580 mi.

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 $534. Another airline that can offer you cheap pricing is TAP AIR PORTUGAL. United Airlines is priced at 26% lower than the current average price of a flight leaving 3 months from now.

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

The most flights from LIS to IAD are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

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.

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).

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 $930, our data indicates the cheapest price to be $444. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $542.

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

Consider Air Canada (74%), United Airlines (74%) or Lufthansa (74%) when booking your flight. These represent the most reliable airlines when flying from Lisbon to Washington, D.C. Dulles Intl Airport.

Most accurate provider : When it comes to deals on Lisbon-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lisbon-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 2 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.

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.

$379+ Flights from Lisbon to Washington, D.C. Dulles Intl Airport

Q: How much does it cost to fly round-trip from Lisbon to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment. Lisbon to Washington, D.C. Dulles Intl Airport flights typically cost between $591 and $688 in January. The cheapest round-trip price found within the last 3 days was $542 on Multiple Airlines (Jan 16-Jan 21).

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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.

Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl are usually found in March or November, booked 81 days in advance, depart on a Sunday or Thursday and return on a Monday

Cheap flight deals from Lisbon to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$542 (Trip.com)
One-way from	$379 (Kiwi.com)
Popular in	July
Cheapest in	March
Average price	$975
Good round-trip deal	$799 or less
Good one-way deal	$831 or less

Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. Dulles Intl flights.

Search Deals

From Lisbon Humberto Delgado to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($92 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

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Price to beat on a round-trip flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl.

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Price to beat on a one-way flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl.

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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 October 27, 2025.

Thu 11/205:00 amLIS - IAD

1 stop16h 05mKLM

Sun 11/236:05 pmIAD - LIS

1 stop11h 30mKLM

Deal found 10/27

$560

Sat 11/85:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sat 11/156:50 pmIAD - LIS

1 stop11h 30mMultiple Airlines

Deal found 10/24

$567

Sun 11/95:00 amLIS - IAD

1 stop16h 05mDelta

Mon 11/246:50 pmIAD - LIS

1 stop11h 30mDelta

Deal found 10/26

$568

Tue 11/255:30 amLIS - IAD

1 stop16h 05mDelta

Tue 12/212:19 pmIAD - LIS

2 stops18h 01mDelta

Deal found 10/26

$571

Fri 11/215:00 amLIS - IAD

1 stop16h 05mDelta

Thu 12/412:19 pmIAD - LIS

1 stop15h 36mDelta

Deal found 10/27

$572

Fri 11/215:00 amLIS - IAD

2 stops19h 08mDelta

Sun 11/236:50 pmIAD - LIS

1 stop17h 40mDelta

Deal found 10/25

$573

Tue 12/165:00 amLIS - IAD

1 stop16h 05mDelta

Thu 1/1512:23 pmIAD - LIS

2 stops17h 57mDelta

Deal found 10/26

$574

Thu 12/185:30 amLIS - IAD

1 stop16h 05mDelta

Thu 1/812:23 pmIAD - LIS

2 stops17h 57mDelta

Deal found 10/27

$575

Thu 12/188:20 amLIS - IAD

1 stop13h 10mMultiple Airlines

Thu 1/86:20 pmIAD - LIS

1 stop15h 25mMultiple Airlines

Deal found 10/26

$576

Mon 11/35:30 amLIS - IAD

1 stop16h 05mAir France

Fri 11/146:50 pmIAD - LIS

1 stop11h 30mAir France

Deal found 10/27

$579

Best flights from Lisbon to Dulles Intl
Discover carefully curated flight deals from Lisbon to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2025.

Fri 11/215:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sun 12/77:59 pmIAD - LIS

2 stops14h 11mMultiple Airlines

Deal found 10/27

$568

Sun 11/95:00 amLIS - IAD

1 stop16h 05mDelta

Mon 11/247:49 pmIAD - LIS

2 stops16h 41mDelta

Deal found 10/25

$568

Tue 11/255:30 amLIS - IAD

1 stop16h 05mAir France

Tue 12/27:59 pmIAD - LIS

2 stops14h 11mAir France

Deal found 10/26

$574

Fri 11/215:00 amLIS - IAD

1 stop16h 05mDelta

Thu 12/412:19 pmIAD - LIS

1 stop15h 36mDelta

Deal found 10/27

$572

Mon 2/165:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sun 2/226:50 pmIAD - LIS

1 stop11h 30mMultiple Airlines

Deal found 10/25

$576

Fri 11/215:00 amLIS - IAD

2 stops19h 08mDelta

Sun 11/236:50 pmIAD - LIS

1 stop17h 40mDelta

Deal found 10/25

$573

Sat 3/75:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sat 3/147:50 pmIAD - LIS

1 stop15h 20mMultiple Airlines

Deal found 10/24

$576

Tue 12/95:00 amLIS - IAD

2 stops19h 19mDelta

Tue 1/136:50 pmIAD - LIS

1 stop11h 30mDelta

Deal found 10/27

$574

Sat 11/85:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sat 11/156:50 pmIAD - LIS

1 stop11h 30mMultiple Airlines

Deal found 10/25

$576

Last-minute flights from Lisbon to Dulles Intl
Discover last-minute flight deals from Lisbon to Dulles Intl. Data last updated October 27, 2025 and is based on user searches.

Mon 11/35:30 amLIS - IAD

1 stop16h 05mAir France

Fri 11/146:50 pmIAD - LIS

1 stop11h 30mAir France

Deal found 10/27

$579

Mon 11/35:30 amLIS - IAD

1 stop16h 05mDelta

Fri 11/147:49 pmIAD - LIS

2 stops16h 41mDelta

Deal found 10/27

$580

Sat 11/85:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sat 11/156:50 pmIAD - LIS

1 stop11h 30mMultiple Airlines

Deal found 10/24

$567

Sat 11/85:00 amLIS - IAD

2 stops19h 18mDelta

Sat 11/1512:11 pmIAD - LIS

2 stops17h 24mDelta

Deal found 10/24

$582

Sun 11/95:00 amLIS - IAD

1 stop16h 05mDelta

Mon 11/247:49 pmIAD - LIS

2 stops16h 41mDelta

Deal found 10/26

$568

Thu 11/205:00 amLIS - IAD

1 stop16h 05mKLM

Sun 11/236:05 pmIAD - LIS

1 stop11h 30mKLM

Deal found 10/27

$560

Fri 11/215:00 amLIS - IAD

1 stop16h 05mDelta

Thu 12/412:19 pmIAD - LIS

1 stop15h 36mDelta

Deal found 10/27

$572

Fri 11/215:00 amLIS - IAD

2 stops19h 08mDelta

Sun 11/236:50 pmIAD - LIS

1 stop17h 40mDelta

Deal found 10/25

$573

Fri 11/215:00 amLIS - IAD

2 stops19h 08mDelta

Sun 12/77:59 pmIAD - LIS

2 stops16h 31mDelta

Deal found 10/27

$574

Tue 11/255:30 amLIS - IAD

1 stop16h 05mDelta

Tue 12/212:19 pmIAD - LIS

2 stops18h 01mDelta

Deal found 10/26

$571

One-way flights from Lisbon to Dulles Intl
Search for one-way flight options from Lisbon to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 27, 2025.

Sat 12/2010:50 amLIS - IAD

1 stop13h 40mAer Lingus

Deal found 10/26

$379

Thu 12/1810:50 amLIS - IAD

1 stop13h 40mAer Lingus

Deal found 10/24

$380

Sat 12/206:40 pmLIS - IAD

2 stops34h 24mBritish Airways

Deal found 10/26

$382

Sun 12/216:40 pmLIS - IAD

1 stop25h 55mBritish Airways

Deal found 10/24

$387

Fri 12/197:05 amLIS - IAD

1 stop13h 30mBritish Airways

Deal found 10/24

$388

Wed 3/1811:15 amLIS - IAD

2 stops16h 39mAmerican Airlines

Deal found 10/27

$391

Thu 1/84:50 pmLIS - IAD

2 stops44h 58mMultiple Airlines

Deal found 10/25

$392

Tue 12/2311:05 amLIS - IAD

2 stops26h 37mAmerican Airlines

Deal found 10/25

$396

Wed 12/2411:05 amLIS - IAD

2 stops31h 22mAmerican Airlines

Deal found 10/25

$402

Thu 11/135:55 amLIS - IAD

2 stops42h 56mMultiple Airlines

Deal found 10/26

$410

Tue 1/276:35 pmLIS - IAD

3 stops50h 55mMultiple Airlines

Deal found 10/26

$412

Cheapflights Fare Finder

Use the filters below to find and compare flights from Lisbon to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 11/21

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sun 12/7

7:59 pm-3:10 pm

2 stops14h 11m

$568

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 11/9

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Mon 11/24

7:49 pm-5:30 pm

2 stops16h 41m

$568

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 11/21

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Thu 12/4

12:19 pm-8:55 am

1 stop15h 36m

$572

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 11/21

5:00 am-7:08 pm

2 stops19h 08m

Washington, D.C. Dulles Intl

Sun 11/23

6:50 pm-5:30 pm

1 stop17h 40m

$573

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 11/25

5:30 am-4:35 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Tue 12/2

7:59 pm-3:10 pm

2 stops14h 11m

$574

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 12/9

5:00 am-7:19 pm

2 stops19h 19m

Washington, D.C. Dulles Intl

Tue 1/13

6:50 pm-11:20 am

1 stop11h 30m

$574

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 2/16

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sun 2/22

6:50 pm-11:20 am

1 stop11h 30m

$576

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 3/7

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sat 3/14

7:50 pm-3:10 pm

1 stop15h 20m

$576

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/8

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sat 11/15

6:50 pm-11:20 am

1 stop11h 30m

$576

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 12/26

10:50 am-7:30 pm

1 stop13h 40m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 19 results

Compare providers for flights from Lisbon to Dulles Intl

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.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lisbon-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from Lisbon to Washington, D.C. Dulles Intl Airport

Prices

Airlines

Delays

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

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 81 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, February is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $485). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $695). 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?

It’s typically best to fly out from Lisbon to Washington, D.C. Dulles Intl Airport at noon. Doing so could potentially save you 38% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Lisbon to Washington, D.C. Dulles Intl Airport?

The best insider tips for Lisbon to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Lisbon to Washington, D.C. Dulles Intl Airport trip

Airports

LIS

Expect long lines at immigration in Terminal 1 for non-Schengen flights, especially in the morning and early afternoon.

IAD

The Silver Line Metro reaches IAD in under 40 minutes, offering a cheap way to get to Washington, D.C.

Our travel experts

Ramsey Qubein

Expert on LIS and IAD

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with United Airlines and TAP AIR PORTUGAL from Lisbon to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,997 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

United Airlines

7.4

Good

8,997 reviews

United Airlines

7.4

Good

8,997 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

TAP AIR PORTUGAL

7.1

Good

2,033 reviews

United Airlines

7.4

Good

8,997 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

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 2 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.
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 16h 05m. Fly via Delta to get the fastest option. The distance from Lisbon to Washington, D.C. Dulles Intl Airport is about 3580 mi.
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 $534. Another airline that can offer you cheap pricing is TAP AIR PORTUGAL. United Airlines is priced at 26% lower than the current average price of a flight leaving 3 months from now.
What are the most reliable airlines from Lisbon to Washington, D.C. Dulles Intl Airport?
Consider Air Canada (74%), United Airlines (74%) or Lufthansa (74%) 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 $930, our data indicates the cheapest price to be $444. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $542.
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, February is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $485). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $695). 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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Top 2 airlines flying from Lisbon to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$534	Average$701	FlexibilityNo cancel fee	On-time69%
TAP AIR PORTUGAL	Cheapest$548	Average$721	FlexibilityNo cancel fee	On-timeN/A

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$379+ 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 12/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Lisbon to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl are usually found in March or November, booked 81 days in advance, depart on a Sunday or Thursday and return on a Monday

Cheap flight deals from Lisbon to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Lisbon to Dulles Intl

Cheapest flights from Lisbon to Dulles IntlExplore 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 27, 2025.

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 27, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Lisbon to Washington, D.C. Dulles Intl Airport that are best for you.

Compare providers for flights from Lisbon to Dulles Intl

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Everything you need to know about your flight from Lisbon to Washington, D.C. Dulles Intl Airport

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

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The best insider tips for Lisbon to Washington, D.C. Dulles Intl Airport flights

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Reviews of airlines servicing Dulles Intl

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.

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

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

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

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Alternative routes for Lisbon to Dulles Intl

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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 27, 2025.