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 13h 35m. Fly via American Airlines or Delta to get the fastest option. The distance from Lisbon to Washington, D.C. Dulles Intl Airport is about 3580 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 $534. Other airlines that can offer you cheap pricing are Lufthansa, from $536, and TAP AIR PORTUGAL, from $541. United Airlines is priced at 25% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from Lisbon to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Lisbon to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

The most flights from LIS to IAD are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 $1,117, our data indicates the cheapest price to be $359. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $506.

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

Consider Air Canada (62%), United Airlines (62%) or Lufthansa (62%) when booking your flight. These represent the most reliable airlines when flying from Lisbon to Washington, D.C. Dulles Intl Airport.

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

Lufthansa, TAP AIR PORTUGAL and United Airlines are the most popular airlines when flying from Lisbon to Washington, D.C. Dulles Intl Airport.

What is the cheapest day to fly round-trip from Lisbon to Washington, D.C. Dulles Intl Airport?

Users have found that flying from Lisbon to Washington, D.C. Dulles Intl Airport on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Flights from Lisbon to Washington, D.C. Dulles Intl Airport lean towards being more expensive in July. Prices are generally better when you fly from Lisbon to Washington, D.C. Dulles Intl Airport in September, with the cheapest ticket starting at $488.

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 5 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.

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.

$399+ Flights from Lisbon to Washington, D.C. Dulles Intl Airport

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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 Wednesday or Sunday and return on a Monday

Cheap flight deals from Lisbon to Dulles Intl

Round-trip from	$492 (Mytrip)
One-way from	$399 (Kiwi.com)
Popular in	July
Cheapest in	March
Average price	$758
Good round-trip deal	$764 or less
Good one-way deal	$443 or less

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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Highest demand for flights based on searches. 12% potential increase in price ($104 potential increase over avg. RT price).

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

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Average for round-trip flights in September 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 September 10, 2025.

Thu 9/255:55 amLIS - IAD

1 stop15h 20mSWISS

Mon 9/298:45 pmIAD - LIS

1 stop15h 35mSWISS

Deal found 9/9

$492

Fri 9/265:55 amLIS - IAD

1 stop15h 20mSWISS

Mon 9/298:45 pmIAD - LIS

1 stop15h 35mSWISS

Deal found 9/9

$506

Sat 11/87:00 amLIS - IAD

1 stop13h 35mAmerican Airlines

Sat 11/156:20 pmIAD - LIS

1 stop15h 30mAmerican Airlines

Deal found 9/8

$520

Wed 10/157:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Sun 10/199:20 pmIAD - LIS

1 stop15h 30mMultiple Airlines

Deal found 9/8

$521

Fri 10/247:20 amLIS - IAD

1 stop17h 55mBritish Airways

Fri 10/317:20 pmIAD - LIS

1 stop23h 05mBritish Airways

Deal found 9/8

$522

Mon 10/67:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Tue 10/149:20 pmIAD - LIS

1 stop15h 30mMultiple Airlines

Deal found 9/9

$523

Thu 10/95:00 amLIS - IAD

1 stop15h 35mMultiple Airlines

Wed 10/229:20 pmIAD - LIS

1 stop12h 30mMultiple Airlines

Deal found 9/9

$524

Fri 11/73:50 pmLIS - IAD

1 stop28h 45mBritish Airways

Sun 11/239:45 pmIAD - LIS

1 stop19h 00mBritish Airways

Deal found 9/10

$526

Fri 10/37:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Fri 10/109:20 pmIAD - LIS

1 stop12h 30mMultiple Airlines

Deal found 9/9

$527

Thu 10/95:00 amLIS - IAD

1 stop15h 35mDelta

Wed 10/229:20 pmIAD - LIS

1 stop12h 30mDelta

Deal found 9/10

$528

Wed 10/155:00 amLIS - IAD

2 stops19h 18mDelta

Sun 10/197:59 pmIAD - LIS

2 stops16h 51mDelta

Deal found 9/9

$530

Sat 11/85:00 amLIS - IAD

1 stop16h 05mDelta

Sat 11/1512:11 pmIAD - LIS

2 stops17h 24mDelta

Deal found 9/8

$532

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 10, 2025.

Thu 12/187:00 amLIS - IAD

1 stop13h 35mAmerican Airlines

Thu 1/86:20 pmIAD - LIS

1 stop15h 25mAmerican Airlines

Deal found 9/8

$520

Sat 11/85:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sat 11/156:50 pmIAD - LIS

1 stop11h 30mMultiple Airlines

Deal found 9/7

$521

Tue 10/75:00 amLIS - IAD

1 stop15h 35mDelta

Tue 10/147:59 pmIAD - LIS

2 stops16h 51mDelta

Deal found 9/9

$524

Tue 10/77:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Tue 10/149:20 pmIAD - LIS

1 stop12h 30mMultiple Airlines

Deal found 9/9

$523

Thu 10/235:00 amLIS - IAD

1 stop15h 35mDelta

Wed 11/56:50 pmIAD - LIS

1 stop11h 30mDelta

Deal found 9/8

$524

Thu 10/95:00 amLIS - IAD

1 stop15h 35mMultiple Airlines

Wed 10/229:20 pmIAD - LIS

1 stop12h 30mMultiple Airlines

Deal found 9/9

$524

Wed 9/245:00 amLIS - IAD

1 stop15h 35mDelta

Sun 9/2812:08 pmIAD - LIS

2 stops15h 42mDelta

Deal found 9/8

$524

Wed 9/245:00 amLIS - IAD

1 stop15h 35mMultiple Airlines

Sun 9/289:20 pmIAD - LIS

1 stop12h 30mMultiple Airlines

Deal found 9/8

$524

Thu 10/95:00 amLIS - IAD

1 stop15h 35mDelta

Wed 10/227:59 pmIAD - LIS

2 stops13h 51mDelta

Deal found 9/9

$524

Last-minute flights from Lisbon to Dulles Intl
Discover last-minute flight deals from Lisbon to Dulles Intl. Data last updated September 10, 2025 and is based on user searches.

Thu 9/255:55 amLIS - IAD

1 stop15h 20mSWISS

Mon 9/298:45 pmIAD - LIS

1 stop15h 35mSWISS

Deal found 9/9

$492

Fri 9/265:55 amLIS - IAD

1 stop15h 20mSWISS

Mon 9/298:45 pmIAD - LIS

1 stop15h 35mSWISS

Deal found 9/9

$506

Fri 9/266:35 amLIS - IAD

1 stop13h 25mIberia

Tue 9/304:35 pmIAD - LIS

1 stop14h 15mIberia

Deal found 9/10

$539

Fri 10/37:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Fri 10/109:20 pmIAD - LIS

1 stop12h 30mMultiple Airlines

Deal found 9/9

$527

Mon 10/67:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Tue 10/149:20 pmIAD - LIS

1 stop15h 30mMultiple Airlines

Deal found 9/9

$523

Thu 10/95:00 amLIS - IAD

1 stop15h 35mMultiple Airlines

Wed 10/226:30 pmIAD - LIS

1 stop11h 45mMultiple Airlines

Deal found 9/9

$524

Thu 10/95:00 amLIS - IAD

1 stop15h 35mDelta

Wed 10/229:20 pmIAD - LIS

1 stop12h 30mDelta

Deal found 9/10

$528

Wed 10/157:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Sun 10/199:20 pmIAD - LIS

1 stop15h 30mMultiple Airlines

Deal found 9/8

$521

Wed 10/155:00 amLIS - IAD

2 stops19h 18mDelta

Sun 10/197:59 pmIAD - LIS

2 stops16h 51mDelta

Deal found 9/9

$530

Fri 10/247:20 amLIS - IAD

1 stop17h 55mBritish Airways

Fri 10/317:20 pmIAD - LIS

1 stop23h 05mBritish Airways

Deal found 9/8

$522

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 10, 2025.

Fri 1/166:25 amLIS - IAD

2 stops40h 13mMultiple Airlines

Deal found 9/9

$399

Wed 10/1512:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 9/8

$402

Thu 10/165:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 9/9

$405

Sat 11/111:25 amLIS - IAD

Nonstop8h 50mTAP AIR PORTUGAL

Deal found 9/9

$407

Fri 11/147:05 amLIS - IAD

2 stops41h 46mMultiple Airlines

Deal found 9/8

$409

Wed 10/812:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 9/8

$417

Thu 10/26:35 amLIS - IAD

2 stops40h 44mMultiple Airlines

Deal found 9/10

$419

Tue 11/117:00 amLIS - IAD

3 stops42h 20mMultiple Airlines

Deal found 9/9

$423

Wed 10/86:20 amLIS - IAD

2 stops41h 47mMultiple Airlines

Deal found 9/8

$431

Fri 1/234:40 pmLIS - IAD

1 stop31h 10mScandinavian Airlines

Deal found 9/9

$437

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

Thu 12/18

7:00 am-3:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Thu 1/8

6:20 pm-2:45 pm

1 stop15h 25m

$520

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

$521

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 10/7

7:30 pm-3:35 pm

1 stop25h 05m

Washington, D.C. Dulles Intl

Tue 10/14

9:20 pm-2:50 pm

1 stop12h 30m

$523

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 10/7

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 10/14

7:59 pm-5:50 pm

2 stops16h 51m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/23

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 11/5

6:50 pm-11:20 am

1 stop11h 30m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 10/22

9:20 pm-2:50 pm

1 stop12h 30m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 9/24

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sun 9/28

12:08 pm-8:50 am

2 stops15h 42m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 9/24

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sun 9/28

9:20 pm-2:50 pm

1 stop12h 30m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 10/22

7:59 pm-2:50 pm

2 stops13h 51m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 11/14

7:05 am-7:51 pm

2 stops41h 46m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 20 results

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

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

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, August is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with United Airlines, TAP AIR PORTUGAL, and Lufthansa 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

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

United Airlines

7.4

Good

8,937 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

TAP AIR PORTUGAL

7.1

Good

1,977 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Lufthansa

6.8

Okay

7,410 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 5 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.
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 13h 35m. Fly via American Airlines or Delta to get the fastest option. The distance from Lisbon to Washington, D.C. Dulles Intl Airport is about 3580 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 $534. Other airlines that can offer you cheap pricing are Lufthansa, from $536, and TAP AIR PORTUGAL, from $541. United Airlines is priced at 25% 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 (62%), United Airlines (62%) or Lufthansa (62%) 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 $1,117, our data indicates the cheapest price to be $359. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $506.
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, August is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

Woodbridge

Alexandria

Arlington

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Lisbon to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$534	Average$635	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$536	Average$740	FlexibilityNo cancel fee	On-time76%
TAP AIR PORTUGAL	Cheapest$541	Average$745	FlexibilityNo cancel fee	On-timeN/A

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$399+ 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 1/16. 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 Wednesday or Sunday and return on a Monday

Cheap flight deals from Lisbon to Dulles Intl

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 September 10, 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 September 10, 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.

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

IAD

Our travel experts

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

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

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

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?

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

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.

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 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?

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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 September 10, 2025.