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

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

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

About 29% of weekly flights between Lisbon and Washington, D.C. have experienced delays in the past year, with the average delay time being 126 minutes.

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.

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

Monday tends to have the lowest number of delays on this route, whereas Saturday 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 15h 35m. 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 $497. Another airline that can offer you cheap pricing is TAP AIR PORTUGAL. United Airlines is priced at 40% 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 Iberia, which is currently one of the cheapest options available, starting at $348. British Airways flights start at $378 while deals on JetBlue start at $395 one-way.

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

The most flights from LIS to IAD are scheduled on a Friday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 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 $2,603, our data indicates the cheapest price to be $591. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $548.

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

Consider JetBlue (72%), TAP AIR PORTUGAL (72%) or airBaltic (65%) 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 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.

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 6 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.

$484+ Cheap Flights from Lisbon to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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.

Cheap flight deals from Lisbon to Dulles Intl

Cheapest

Best

Last-minute

One-way

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 September 7, 2026.

Fri 11/207:05 am -

1 stop13h 35m

Sat 11/286:05 pm -

1 stop13h 00m

Deal found 9/5

$533

Fri 11/208:50 pm -

2 stops26h 40m

Sat 11/287:40 pm -

2 stops21h 00m

Deal found 9/3

$548

Wed 11/256:30 am -

1 stop14h 50m

Tue 12/16:05 pm -

1 stop22h 45m

Deal found 9/4

$569

Sat 11/216:30 am -

1 stop14h 50m

Wed 12/29:55 pm -

1 stop14h 50m

Deal found 9/3

$570

Tue 12/226:30 am -

1 stop14h 50m

Sat 1/26:05 pm -

1 stop18h 50m

Deal found 9/5

$579

Thu 10/111:40 am -

Nonstop8h 30m

Sat 10/1010:35 pm -

Nonstop7h 20m

Deal found 9/3

$585

Tue 12/226:30 am -

1 stop14h 50m

Sat 1/236:05 pm -

1 stop13h 00m

Deal found 9/3

$587

Wed 10/285:00 am -

1 stop15h 55m

Sat 11/79:30 pm -

1 stop15h 00m

Deal found 9/3

$590

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 September 7, 2026.

Sat 11/216:30 am -

1 stop14h 50m

Wed 12/26:05 pm -

1 stop22h 50m

Deal found 9/4

$587

Thu 10/85:00 am -

1 stop15h 35m

Thu 10/159:45 pm -

1 stop12h 10m

Deal found 9/3

$590

Thu 1/146:30 am -

1 stop14h 50m

Sun 1/176:05 pm -

1 stop15h 50m

Deal found 9/6

$594

Fri 11/205:00 am -

2 stops17h 28m

Sat 11/286:15 pm -

1 stop19h 25m

Deal found 9/2

$602

Tue 10/277:45 pm -

1 stop24h 55m

Fri 11/69:45 pm -

1 stop19h 45m

Deal found 9/6

$618

Thu 12/245:00 am -

1 stop15h 55m

Thu 12/3110:30 pm -

Nonstop6h 50m

Deal found 9/4

$716

Thu 10/15:00 am -

1 stop15h 35m

Sat 10/106:31 pm -

2 stops15h 24m

Deal found 9/2

$591

Tue 10/205:00 am -

1 stop15h 35m

Tue 10/277:40 pm -

1 stop15h 30m

Deal found 9/5

$592

Thu 10/295:00 am -

1 stop15h 45m

Sat 11/79:30 pm -

1 stop15h 00m

Deal found 9/3

$592

Sat 11/215:00 am -

2 stops17h 28m

Wed 12/26:20 pm -

2 stops15h 50m

Deal found 9/6

$597

Wed 9/305:35 am -

2 stops17h 11m

Sun 10/256:32 pm -

1 stop9h 28m

Deal found 9/6

$604

Last-minute flights from Lisbon to Dulles Intl
Discover last-minute flight deals from Lisbon to Dulles Intl. Data last updated September 7, 2026 and is based on user searches.

Fri 9/115:00 am -

1 stop15h 35m

Sun 9/279:45 pm -

1 stop19h 40m

Deal found 9/4

$592

Tue 9/155:00 am -

2 stops17h 46m

Mon 9/2112:25 pm -

2 stops15h 25m

Deal found 9/5

$597

Tue 9/226:35 am -

1 stop17h 15m

Sat 11/289:45 pm -

1 stop12h 10m

Deal found 9/3

$593

Sat 9/269:50 am -

1 stop15h 40m

Mon 9/286:26 pm -

2 stops18h 24m

Deal found 9/2

$595

Wed 9/3012:15 pm -

1 stop12h 20m

Sun 10/2512:30 pm -

1 stop15h 30m

Deal found 9/2

$598

Thu 10/111:40 am -

Nonstop8h 30m

Sat 10/1010:35 pm -

Nonstop7h 20m

Deal found 9/3

$585

Thu 10/15:35 am -

1 stop15h 30m

Sat 10/1012:30 pm -

2 stops15h 20m

Deal found 9/3

$594

Wed 10/285:00 am -

1 stop15h 55m

Sat 11/79:30 pm -

1 stop15h 00m

Deal found 9/3

$590

Fri 10/305:00 am -

1 stop15h 55m

Wed 11/119:30 pm -

1 stop15h 00m

Deal found 9/2

$591

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 September 7, 2026.

Tue 9/2210:15 pm -

1 stop22h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$484

Mon 10/2610:50 am -

1 stop13h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$487

Thu 9/178:55 pm -

3 stops42h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/3

$489

Tue 11/107:00 pm -

2 stops26h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/4

$490

Sat 11/289:40 pm -

2 stops47h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/2

$492

Tue 10/278:05 am -

2 stops36h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$494

Wed 10/75:55 am -

3 stops42h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/2

$496

Sun 11/296:50 pm -

1 stop25h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/3

$499

Find flight deals from Lisbon to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$533
One-way from	$484 (Thrive Travel)
Popular in	August
Cheapest in	December
Average price	$841
Good round-trip deal	$754 or less
Good one-way deal	$744 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. 16% potential increase in price ($160 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

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

Search Deals

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

Search Deals

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

Cheapest round-trip

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Sat 11/21

6:30 am-4:20 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Wed 12/2

6:05 pm-9:55 pm

1 stop22h 50m

$587

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 10/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Thu 10/15

9:45 pm-2:55 pm

1 stop12h 10m

$590

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 10/1

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sat 10/10

6:31 pm-2:55 pm

2 stops15h 24m

$591

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Tue 10/20

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 10/27

7:40 pm-3:10 pm

1 stop15h 30m

$592

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 10/29

5:00 am-4:45 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Sat 11/7

9:30 pm-5:30 pm

1 stop15h 00m

$592

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 1/14

6:30 am-4:20 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Sun 1/17

6:05 pm-2:55 pm

1 stop15h 50m

$594

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Sat 11/21

5:00 am-5:28 pm

2 stops17h 28m

Washington, D.C. Dulles Intl

Wed 12/2

6:20 pm-3:10 pm

2 stops15h 50m

$597

Quickest round-trip

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Tue 11/17

10:55 am-2:45 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$602

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Mon 11/16

11:25 am-3:15 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$602

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Fri 11/20

5:00 am-5:28 pm

2 stops17h 28m

Washington, D.C. Dulles Intl

Sat 11/28

6:15 pm-6:40 pm

1 stop19h 25m

$602

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 20 resultsSorted by cheapest first

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.

LIS-IAD

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

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 $615). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $1,002). 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?

When flying from Lisbon to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 $757 and $937 in November.
The cheapest round-trip price found within the last 5 days was $533 on British Airways (Nov 20-Nov 28).

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

Our travel experts

Ramsey Qubein

Expert on LIS and IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

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

10,173 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,173 reviews

United Airlines

7.4

Good

10,173 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

TAP AIR PORTUGAL

7.2

Good

2,386 reviews

United Airlines

7.4

Good

10,173 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 6 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 15h 35m. 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 $497. Another airline that can offer you cheap pricing is TAP AIR PORTUGAL. United Airlines is priced at 40% 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 Iberia, which is currently one of the cheapest options available, starting at $348. British Airways flights start at $378 while deals on JetBlue start at $395 one-way.
What are the most reliable airlines from Lisbon to Washington, D.C. Dulles Intl Airport?
Consider JetBlue (72%), TAP AIR PORTUGAL (72%) or airBaltic (65%) 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 $2,603, our data indicates the cheapest price to be $591. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $548.
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, December is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $615). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $1,002). 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

Alexandria

Owings Mills

Arlington

Tysons

Lanham

Reston

Herndon

Rockville

Chantilly

Hyattsville

Fredericksburg

Woodbridge

Falls Church

Sterling

Hanover

Laurel

Oxon Hill

Clinton

Hunt Valley

Silver Spring

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Dulles Intl flight routes

Flights by cabin class

Other flight options

Other flights from Lisbon

Popular flights

Alternative routes for Lisbon to Dulles Intl

Lisbon to Baltimore flights

Top 2 airlines flying from Lisbon to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$497	Average$881	FlexibilityNo cancel fee	On-time69%
TAP AIR PORTUGAL	Cheapest$569	Average$857	FlexibilityNo cancel fee	On-timeN/A

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.

$484+ Cheap flights from Lisbon (LIS) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. 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

Cheap 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 September 7, 2026.

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 September 7, 2026.

Best flights from Lisbon to Dulles IntlDiscover 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 September 7, 2026.

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 September 7, 2026.

Last-minute flights from Lisbon to Dulles IntlDiscover last-minute flight deals from Lisbon to Dulles Intl. Data last updated September 7, 2026 and is based on user searches.

Discover last-minute flight deals from Lisbon to Dulles Intl. Data last updated September 7, 2026 and is based on user searches.

One-way flights from Lisbon to Dulles IntlSearch for one-way flight options from Lisbon to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.

Search for one-way flight options from Lisbon to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.

Find 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

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.

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.

Cheapflights Insights

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

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

When flying from Lisbon to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 $757 and $937 in November.The cheapest round-trip price found within the last 5 days was $533 on British Airways (Nov 20-Nov 28).

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

The most flights from LIS to IAD are scheduled on a Friday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).

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

About 29% of weekly flights between Lisbon and Washington, D.C. have experienced delays in the past year, with the average delay time being 126 minutes.

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.

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

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

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

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

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

AI-powered summary based on content written by travel experts. AI can make mistakes.

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

Our travel experts

Reviews of airlines servicing Dulles Intl

Related info for your journey

What airport do you fly from for flights from Lisbon to Washington, D.C. Dulles Intl?

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

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

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

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

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?

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

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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.

Complete your trip

Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.

Search flights from Lisbon to Dulles Intl by cabin class

Find flights from Lisbon to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Lisbon and Dulles Intl flights

Browse other Lisbon and Dulles Intl flight options. Last updated on September 7, 2026.

Other flights from Lisbon

Browse through other flights departing from Lisbon. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top 2 airlines flying 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 September 7, 2026.

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 September 7, 2026.

Last-minute flights from Lisbon to Dulles Intl
Discover last-minute flight deals from Lisbon to Dulles Intl. Data last updated September 7, 2026 and is based on user searches.

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 September 7, 2026.

Lisbon to Washington, D.C. Dulles Intl Airport flights typically cost between $757 and $937 in November.
The cheapest round-trip price found within the last 5 days was $533 on British Airways (Nov 20-Nov 28).