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

Tuesday 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.

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.

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 30% of weekly flights between Lisbon and Washington, D.C. have experienced delays in the past year, with the average delay time being 135 minutes.

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

There are many flights that can get you from Lisbon to Washington, D.C. Dulles Intl Airport in 8h 50m. Fly via TAP AIR PORTUGAL or United Airlines 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 $561. Another airline that can offer you cheap pricing is United Airlines. TAP AIR PORTUGAL is priced at 24% 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 TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $367. JetBlue flights start at $395 while deals on Aer Lingus start at $416 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 Monday (4 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 $850, our data indicates the cheapest price to be $543. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $525.

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

Consider Air Canada (72%), United Airlines (72%) or Lufthansa (72%) 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.

$470+ 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 $573 and $763 in January. The cheapest round-trip price found within the last 3 days was $539 on Royal Air Maroc (Jan 25-Feb 1).

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Cheap 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 diciembre 12, 2025.

vie. 12/263:30 pmLIS - IAD

1 stop29h 35mMultiple Airlines

dom. 1/116:50 pmIAD - LIS

1 stop17h 40mMultiple Airlines

Deal found 12/11

$610

mar. 12/235:00 amLIS - IAD

1 stop15h 50mUnited Airlines

sáb. 1/310:05 pmIAD - LIS

Nonstop7h 10mUnited Airlines

Deal found 12/10

$616

sáb. 12/275:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

lun. 3/1610:45 pmIAD - LIS

1 stop14h 45mMultiple Airlines

Deal found 12/11

$617

mié. 12/245:00 amLIS - IAD

1 stop14h 35mUnited Airlines

jue. 1/89:45 amIAD - LIS

1 stop18h 35mUnited Airlines

Deal found 12/11

$619

vie. 12/265:00 amLIS - IAD

1 stop20h 15mUnited Airlines

lun. 3/1612:55 pmIAD - LIS

2 stops30h 35mUnited Airlines

Deal found 12/11

$620

mié. 12/2411:55 amLIS - IAD

Nonstop8h 35mUnited Airlines

lun. 1/125:38 pmIAD - LIS

1 stop9h 32mUnited Airlines

Deal found 12/11

$621

jue. 12/2510:55 amLIS - IAD

1 stop15h 04mUnited Airlines

mar. 1/135:38 pmIAD - LIS

1 stop9h 32mUnited Airlines

Deal found 12/11

$625

mié. 12/2411:55 amLIS - IAD

Nonstop8h 35mUnited Airlines

dom. 1/116:00 pmIAD - LIS

1 stop12h 35mUnited Airlines

Deal found 12/11

$626

jue. 12/2511:55 amLIS - IAD

Nonstop8h 35mUnited Airlines

vie. 1/99:00 amIAD - LIS

1 stop19h 20mUnited Airlines

Deal found 12/11

$628

jue. 12/2510:55 amLIS - IAD

1 stop15h 04mUnited Airlines

dom. 1/1110:00 pmIAD - LIS

1 stop12h 05mUnited Airlines

Deal found 12/11

$629

jue. 12/2510:55 amLIS - IAD

1 stop15h 04mAir Canada

vie. 1/94:30 pmIAD - LIS

1 stop11h 50mAir Canada

Deal found 12/11

$631

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 diciembre 12, 2025.

jue. 2/265:00 amLIS - IAD

1 stop15h 50mMultiple Airlines

mar. 3/38:30 pmIAD - LIS

1 stop13h 05mMultiple Airlines

Deal found 12/11

$591

jue. 2/2611:25 amLIS - IAD

Nonstop8h 50mTAP AIR PORTUGAL

mar. 3/35:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

Deal found 12/11

$593

jue. 1/155:00 amLIS - IAD

1 stop20h 15mUnited Airlines

mié. 1/285:38 pmIAD - LIS

1 stop9h 32mUnited Airlines

Deal found 12/10

$594

jue. 1/155:00 amLIS - IAD

1 stop16h 05mDelta

mié. 1/2812:23 pmIAD - LIS

2 stops17h 57mDelta

Deal found 12/10

$603

jue. 2/265:00 amLIS - IAD

2 stops15h 49mAir Canada

mar. 3/312:43 pmIAD - LIS

2 stops15h 37mAir Canada

Deal found 12/11

$604

lun. 5/47:15 amLIS - IAD

1 stop14h 35mMultiple Airlines

vie. 5/88:20 pmIAD - LIS

1 stop14h 15mMultiple Airlines

Deal found 12/11

$592

mar. 3/175:00 amLIS - IAD

1 stop15h 50mUnited Airlines

mar. 4/71:05 pmIAD - LIS

2 stops15h 15mUnited Airlines

Deal found 12/10

$597

lun. 1/125:00 amLIS - IAD

1 stop16h 05mDelta

dom. 1/257:49 pmIAD - LIS

2 stops14h 21mDelta

Deal found 12/10

$603

mar. 3/175:00 amLIS - IAD

1 stop20h 15mMultiple Airlines

mar. 4/78:45 pmIAD - LIS

1 stop21h 35mMultiple Airlines

Deal found 12/10

$594

jue. 2/265:00 amLIS - IAD

1 stop20h 15mUnited Airlines

mar. 3/38:15 amIAD - LIS

2 stops20h 05mUnited Airlines

Deal found 12/11

$598

jue. 2/55:00 amLIS - IAD

1 stop14h 35mMultiple Airlines

sáb. 2/145:45 pmIAD - LIS

1 stop18h 55mMultiple Airlines

Deal found 12/10

$602

Last-minute flights from Lisbon to Dulles Intl
Discover last-minute flight deals from Lisbon to Dulles Intl. Data last updated diciembre 12, 2025 and is based on user searches.

lun. 1/125:00 amLIS - IAD

1 stop14h 35mLufthansa

dom. 1/255:40 pmIAD - LIS

1 stop14h 40mLufthansa

Deal found 12/10

$600

lun. 1/125:00 amLIS - IAD

1 stop16h 05mDelta

dom. 1/257:49 pmIAD - LIS

2 stops14h 21mDelta

Deal found 12/10

$603

jue. 1/155:00 amLIS - IAD

1 stop14h 35mLufthansa

mié. 1/285:40 pmIAD - LIS

1 stop14h 40mLufthansa

Deal found 12/10

$580

jue. 1/155:00 amLIS - IAD

1 stop20h 15mUnited Airlines

mié. 1/285:38 pmIAD - LIS

1 stop9h 32mUnited Airlines

Deal found 12/10

$594

jue. 1/155:00 amLIS - IAD

1 stop16h 05mDelta

mié. 1/2812:23 pmIAD - LIS

2 stops17h 57mDelta

Deal found 12/11

$604

jue. 1/158:20 amLIS - IAD

1 stop13h 10mAmerican Airlines

mié. 1/286:20 pmIAD - LIS

1 stop22h 30mAmerican Airlines

Deal found 12/10

$606

jue. 1/158:20 amLIS - IAD

1 stop13h 10mMultiple Airlines

mié. 1/286:20 pmIAD - LIS

1 stop12h 50mMultiple Airlines

Deal found 12/11

$608

dom. 1/2512:25 pmLIS - IAD

1 stop11h 20mRoyal Air Maroc

dom. 2/18:45 pmIAD - LIS

1 stop15h 10mRoyal Air Maroc

Deal found 12/11

$539

dom. 1/255:10 pmLIS - IAD

Nonstop8h 50mTAP AIR PORTUGAL

dom. 2/110:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

Deal found 12/11

$586

dom. 1/255:00 amLIS - IAD

1 stop20h 15mUnited Airlines

dom. 2/19:00 amIAD - LIS

2 stops33h 30mUnited Airlines

Deal found 12/11

$598

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 diciembre 12, 2025.

mar. 12/1610:50 amLIS - IAD

1 stop13h 40mAer Lingus

Deal found 12/11

$470

sáb. 2/142:05 pmLIS - IAD

3 stops25h 17mMultiple Airlines

Deal found 12/11

$476

dom. 1/116:55 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 12/11

$477

mar. 1/2711:35 amLIS - IAD

1 stop27h 44mMultiple Airlines

Deal found 12/11

$479

sáb. 2/2111:30 pmLIS - IAD

3 stops24h 15mMultiple Airlines

Deal found 12/10

$484

mié. 12/1711:35 amLIS - IAD

1 stop12h 10mRoyal Air Maroc

Deal found 12/10

$486

jue. 12/185:55 pmLIS - IAD

1 stop29h 50mRoyal Air Maroc

Deal found 12/10

$492

lun. 1/269:45 amLIS - IAD

3 stops35h 45mMultiple Airlines

Deal found 12/11

$493

vie. 3/272:55 pmLIS - IAD

2 stops33h 35mMultiple Airlines

Deal found 12/9

$495

dom. 1/258:35 amLIS - IAD

2 stops33h 01mMultiple Airlines

Deal found 12/11

$497

vie. 1/2312:30 pmLIS - IAD

1 stop11h 15mRoyal Air Maroc

Deal found 12/11

$509

jue. 6/46:35 amLIS - IAD

2 stops17h 20mIberia

Deal found 12/11

$511

Find flight deals from Lisbon to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$539 (oojo)
One-way from	$470 (Gurufare)
Popular in	July
Cheapest in	December
Average price	$635
Good round-trip deal	$713 or less
Good one-way deal	$607 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. 9% potential increase in price ($80 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

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

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 2/26

5:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

mar. 3/3

8:30 pm-2:35 pm

1 stop13h 05m

$591

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

lun. 5/4

7:15 am-4:50 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

vie. 5/8

8:20 pm-3:35 pm

1 stop14h 15m

$592

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 2/26

11:25 am-3:15 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

mar. 3/3

5:30 pm-5:35 am

Nonstop7h 05m

$593

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 1/15

5:00 am-8:15 pm

1 stop20h 15m

Washington, D.C. Dulles Intl

mié. 1/28

5:38 pm-8:10 am

1 stop9h 32m

$594

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

mar. 3/17

5:00 am-9:15 pm

1 stop20h 15m

Washington, D.C. Dulles Intl

mar. 4/7

8:45 pm-11:20 pm

1 stop21h 35m

$594

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

mar. 3/17

5:00 am-4:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

mar. 4/7

1:05 pm-9:20 am

2 stops15h 15m

$597

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 2/26

5:00 am-8:15 pm

1 stop20h 15m

Washington, D.C. Dulles Intl

mar. 3/3

8:15 am-9:20 am

2 stops20h 05m

$598

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 2/5

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

sáb. 2/14

5:45 pm-5:40 pm

1 stop18h 55m

$602

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 1/15

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

mié. 1/28

12:23 pm-11:20 am

2 stops17h 57m

$603

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

lun. 1/12

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

dom. 1/25

7:49 pm-3:10 pm

2 stops14h 21m

$603

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 23 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 December.

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

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 $493). 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 40% 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

9,095 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

United Airlines

7.4

Good

9,095 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

TAP AIR PORTUGAL

7.1

Good

2,089 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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 8h 50m. Fly via TAP AIR PORTUGAL or United Airlines 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 $561. Another airline that can offer you cheap pricing is United Airlines. TAP AIR PORTUGAL is priced at 24% 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 TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $367. JetBlue flights start at $395 while deals on Aer Lingus start at $416 one-way.
What are the most reliable airlines from Lisbon to Washington, D.C. Dulles Intl Airport?
Consider Air Canada (72%), United Airlines (72%) or Lufthansa (72%) 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 $850, our data indicates the cheapest price to be $543. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $525.
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 $493). 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
TAP AIR PORTUGAL	Cheapest$561	Average$721	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$573	Average$777	FlexibilityNo cancel fee	On-time69%

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$470+ 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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.

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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 diciembre 12, 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 diciembre 12, 2025.

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Best time to book a flight 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

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

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

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

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Top 2 airlines flying from 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 diciembre 12, 2025.