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

The cheapest airlines for a one-way flight from Portugal to Washington, D.C. Dulles Intl Airport are Royal Air Maroc ($362), TAP AIR PORTUGAL ($400), and Aer Lingus ($447).

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

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

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

The cheapest flight price from Portugal to Washington, D.C. Dulles Intl Airport is $338. On average you can expect to pay $1,957. The most popular route, (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), can usually be booked for $490.

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

Consider Air Canada (83%), United Airlines (83%) or Lufthansa (83%) when booking your flight. These represent the most reliable airlines when flying from Portugal to Washington, D.C. Dulles Intl Airport.

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

Before booking your flight from Portugal to Washington, D.C. Dulles Intl Airport check out the most popular airlines for this route: Lufthansa, TAP AIR PORTUGAL or United Airlines.

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

Tuesday is generally a great day to depart. Flying on this day could help you save up to 18%.

How far in advance should I book a flight from Portugal to Washington, D.C. Dulles Intl Airport?

Travelers have found it’s best to book a flight 49 days in advance to save up to 74% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 49 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portugal to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as $549, or $751 for flights within the next 24 hours.

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

The best pricing can be found in the month of September. Prices to Washington, D.C. Dulles Intl Airport from Portugal average $683. You can even find prices in September for less than $683, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $498. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Portugal. Flying in the targeted month can save you up to 29%.

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

Yes. In addition to deals on Portugal to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

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

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Dulles Intl.

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

Yes. Cheapflights offers flight deals from Portugal 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.

$708+ Flights from Portugal to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Portugal to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$489 (Finnair)
One-way from	$362 (oojo)
Popular in	July
Cheapest in	September
Average price	$720
Good round-trip deal	$498 or less
Good one-way deal	$538 or less

Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. (WAS) flight deals.

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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. (WAS) flights.

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From Portugal to Washington, D.C. Dulles Intl

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One-way flight from Portugal to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 16% potential increase in price ($134 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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

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

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Find flight deals from Portugal to Dulles Intl

Cheapest flights from Portugal to Dulles Intl
Explore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Wed 5/146:35 amLIS - IAD

1 stop13h 25mMultiple Airlines

Mon 5/265:40 pmIAD - LIS

1 stop24h 30mMultiple Airlines

Deal found 3/27

$489

Wed 5/146:35 amLIS - IAD

1 stop13h 25mFinnair

Mon 5/2610:40 pmIAD - LIS

1 stop19h 30mFinnair

Deal found 3/27

$490

Thu 5/15:00 amLIS - IAD

1 stop15h 35mDelta

Fri 5/309:20 pmIAD - LIS

1 stop15h 30mDelta

Deal found 3/27

$509

Mon 5/197:15 amLIS - IAD

1 stop15h 15mBritish Airways

Tue 6/310:40 pmIAD - LIS

1 stop11h 50mBritish Airways

Deal found 3/26

$510

Fri 5/168:15 amOPO - IAD

1 stop11h 45mIberia

Thu 5/294:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 3/26

$517

Thu 5/19:50 amLIS - IAD

1 stop14h 25mAir France

Sat 5/316:30 pmIAD - LIS

1 stop15h 20mAir France

Deal found 3/27

$519

Sat 4/126:55 pmOPO - IAD

1 stop25h 40mKLM

Sat 4/196:30 pmIAD - OPO

1 stop16h 00mKLM

Deal found 3/27

$522

Fri 5/912:45 pmLIS - IAD

2 stops15h 09mVirgin Atlantic

Sun 5/256:00 amIAD - LIS

2 stops23h 45mVirgin Atlantic

Deal found 3/27

$530

Fri 5/96:35 amLIS - IAD

1 stop13h 25mAmerican Airlines

Sun 5/255:40 pmIAD - LIS

1 stop24h 20mAmerican Airlines

Deal found 3/27

$531

Sun 4/135:00 amOPO - IAD

1 stop15h 35mDelta

Fri 4/188:33 pmIAD - OPO

2 stops16h 37mDelta

Deal found 3/27

$531

Thu 5/18:15 amOPO - IAD

1 stop11h 45mBritish Airways

Sat 5/1710:45 pmIAD - OPO

1 stop16h 50mBritish Airways

Deal found 3/27

$533

Fri 5/25:00 amLIS - IAD

1 stop15h 35mKLM

Thu 5/155:25 pmIAD - LIS

1 stop24h 25mKLM

Deal found 3/27

$546

Best flights from Portugal to Dulles Intl
Discover carefully curated flight deals from Portugal to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2025.

Wed 5/146:35 amLIS - IAD

1 stop13h 25mMultiple Airlines

Mon 5/265:40 pmIAD - LIS

1 stop24h 30mMultiple Airlines

Deal found 3/27

$489

Wed 5/146:35 amLIS - IAD

1 stop13h 25mFinnair

Mon 5/2610:40 pmIAD - LIS

1 stop19h 30mFinnair

Deal found 3/27

$490

Thu 5/15:00 amLIS - IAD

1 stop15h 35mDelta

Fri 5/309:20 pmIAD - LIS

1 stop15h 30mDelta

Deal found 3/27

$509

Mon 5/197:15 amLIS - IAD

1 stop15h 15mBritish Airways

Tue 6/310:40 pmIAD - LIS

1 stop11h 50mBritish Airways

Deal found 3/26

$510

Fri 5/168:15 amOPO - IAD

1 stop11h 45mIberia

Thu 5/294:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 3/26

$517

Thu 5/19:50 amLIS - IAD

1 stop14h 25mAir France

Sat 5/316:30 pmIAD - LIS

1 stop15h 20mAir France

Deal found 3/27

$519

Sat 4/126:55 pmOPO - IAD

1 stop25h 40mKLM

Sat 4/196:30 pmIAD - OPO

1 stop16h 00mKLM

Deal found 3/27

$522

Fri 5/912:45 pmLIS - IAD

2 stops15h 09mVirgin Atlantic

Sun 5/256:00 amIAD - LIS

2 stops23h 45mVirgin Atlantic

Deal found 3/27

$530

Fri 5/96:35 amLIS - IAD

1 stop13h 25mAmerican Airlines

Sun 5/255:40 pmIAD - LIS

1 stop24h 20mAmerican Airlines

Deal found 3/27

$531

Fri 5/912:20 pmLIS - IAD

Nonstop8h 25mLufthansa

Sun 5/2510:20 pmIAD - LIS

1 stop18h 30mLufthansa

Deal found 3/27

$552

Wed 4/168:40 amOPO - IAD

1 stop12h 35mSWISS

Wed 4/308:45 pmIAD - OPO

1 stop16h 45mSWISS

Deal found 3/27

$560

Thu 4/311:25 amLIS - IAD

1 stop32h 48mUnited Airlines

Thu 4/1710:15 pmIAD - LIS

Nonstop7h 15mUnited Airlines

Deal found 3/27

$561

Last-minute flights from Portugal to Dulles Intl
Discover last-minute flight deals from Portugal to Dulles Intl. Data last updated March 28, 2025 and is based on user searches.

Sat 3/293:25 pmLIS - IAD

1 stop28h 10mKLM

Mon 4/145:25 pmIAD - LIS

1 stop12h 30mKLM

Deal found 3/26

$670

Thu 4/37:20 amLIS - IAD

1 stop17h 50mBritish Airways

Thu 4/1710:40 pmIAD - LIS

1 stop19h 20mBritish Airways

Deal found 3/27

$511

Thu 4/311:25 amLIS - IAD

1 stop32h 48mUnited Airlines

Thu 4/1710:15 pmIAD - LIS

Nonstop7h 15mUnited Airlines

Deal found 3/27

$561

Thu 4/312:20 pmLIS - IAD

Nonstop8h 25mLufthansa

Thu 4/1710:15 pmIAD - LIS

Nonstop7h 15mLufthansa

Deal found 3/27

$587

Thu 4/37:20 amLIS - IAD

1 stop17h 50mAmerican Airlines

Thu 4/1710:40 pmIAD - LIS

1 stop19h 20mAmerican Airlines

Deal found 3/27

$663

Thu 4/37:20 amLIS - IAD

1 stop17h 50mFinnair

Thu 4/1710:40 pmIAD - LIS

1 stop19h 20mFinnair

Deal found 3/27

$679

Thu 4/311:25 amLIS - IAD

1 stop28h 49mAir Canada

Thu 4/171:53 pmIAD - LIS

2 stops13h 07mAir Canada

Deal found 3/27

$1,256

Thu 4/37:15 amLIS - IAD

2 stops17h 05mIcelandair

Thu 4/178:30 pmIAD - LIS

2 stops20h 15mIcelandair

Deal found 3/27

$1,523

Thu 4/38:15 pmLIS - IAD

1 stop23h 25mITA Airways

Thu 4/1712:11 pmIAD - LIS

2 stops20h 09mITA Airways

Deal found 3/27

$2,305

Fri 4/411:25 amLIS - IAD

1 stop32h 48mMultiple Airlines

Thu 4/1710:15 pmIAD - LIS

Nonstop7h 15mMultiple Airlines

Deal found 3/28

$559

Fri 4/45:00 amLIS - IAD

1 stop15h 35mDelta

Thu 4/1712:11 pmIAD - LIS

1 stop14h 49mDelta

Deal found 3/28

$589

Fri 4/412:45 pmLIS - IAD

2 stops16h 43mVirgin Atlantic

Thu 4/176:00 amIAD - LIS

2 stops21h 00mVirgin Atlantic

Deal found 3/28

$673

One-way flights from Portugal to Dulles Intl
Search for one-way flight options from Portugal to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated March 28, 2025.

Sun 5/257:00 pmOPO - IAD

1 stop29h 05mRoyal Air Maroc

Deal found 3/27

$362

Thu 5/159:00 amOPO - IAD

1 stop16h 50mTAP AIR PORTUGAL

Deal found 3/27

$400

Sat 5/106:40 amLIS - IAD

2 stops38h 56mMultiple Airlines

Deal found 3/27

$411

Sun 4/276:30 amOPO - IAD

2 stops39h 05mMultiple Airlines

Deal found 3/26

$443

Thu 4/1011:25 amLIS - IAD

1 stop12h 30mAer Lingus

Deal found 3/27

$447

Mon 6/212:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 3/27

$455

Thu 5/2910:05 pmLIS - IAD

1 stop26h 00mRoyal Air Maroc

Deal found 3/28

$480

Sun 6/18:15 amLIS - IAD

2 stops31h 01mAir Transat

Deal found 3/27

$486

Fri 5/306:35 amLIS - IAD

1 stop13h 25mFinnair

Deal found 3/27

$502

Thu 5/158:35 pmOPO - IAD

2 stops28h 30mIberia

Deal found 3/27

$513

Wed 4/306:35 amLIS - IAD

1 stop13h 25mIberia

Deal found 3/27

$518

Mon 5/128:45 pmLIS - IAD

2 stops25h 45mBritish Airways

Deal found 3/27

$520

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal 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

Wed 5/14

6:35 am-3:00 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Mon 5/26

5:40 pm-11:10 pm

1 stop24h 30m

$489

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 5/14

6:35 am-3:00 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Mon 5/26

10:40 pm-11:10 pm

1 stop19h 30m

$490

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 5/1

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Fri 5/30

9:20 pm-5:50 pm

1 stop15h 30m

$509

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 5/19

7:15 am-5:30 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Tue 6/3

10:40 pm-3:30 pm

1 stop11h 50m

$510

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 5/16

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Thu 5/29

4:35 pm-3:55 pm

1 stop18h 20m

$517

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 5/1

9:50 am-7:15 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Sat 5/31

6:30 pm-2:50 pm

1 stop15h 20m

$519

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sat 4/12

6:55 pm-3:35 pm

1 stop25h 40m

Washington, D.C. Dulles Intl

Sat 4/19

6:30 pm-3:30 pm

1 stop16h 00m

$522

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 5/9

12:45 pm-10:54 pm

2 stops15h 09m

Washington, D.C. Dulles Intl

Sun 5/25

6:00 am-10:45 am

2 stops23h 45m

$530

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 5/9

6:35 am-3:00 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Sun 5/25

5:40 pm-11:00 pm

1 stop24h 20m

$531

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 4/13

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Fri 4/18

8:33 pm-6:10 pm

2 stops16h 37m

$531

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 55 results

...

Best time to book a flight from Portugal to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Portugal 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 Portugal to Washington, D.C. Dulles Intl Airport

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

Currently, August is the cheapest month in which you can book a flight from Portugal to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Portugal to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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 PT to IAD?

When flying from Portugal to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 28% versus a flight at noon.

Rainfall in Dulles Intl by month

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Delta, KLM and Air Transat from Portugal to Washington, D.C. have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,896 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat

7.8

Good

381 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,267 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,570 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from Portugal to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airlines for a one-way flight from Portugal to Washington, D.C. Dulles Intl Airport are Royal Air Maroc ($362), TAP AIR PORTUGAL ($400), and Aer Lingus ($447).
What are the most reliable airlines from Portugal to Washington, D.C. Dulles Intl Airport?
Consider Air Canada (83%), United Airlines (83%) or Lufthansa (83%) when booking your flight. These represent the most reliable airlines when flying from Portugal to Washington, D.C. Dulles Intl Airport.
What are the cheapest flights from Portugal to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from Portugal to Washington, D.C. Dulles Intl Airport is $338. On average you can expect to pay $1,957. The most popular route, (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), can usually be booked for $490.
Can I find deals for flights from Portugal to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Portugal to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Dulles Intl.
Can I find deals for business class flights from Portugal to Dulles Intl?
Yes. Cheapflights offers flight deals from Portugal 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 Portugal to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Portugal to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Portugal to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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

Arlington

Alexandria

Fairfax

Tysons

Springfield

Rockville

Woodbridge

Gaithersburg

Fredericksburg

Linthicum Heights

Silver Spring

Falls Church

Laurel

Easton

Herndon

Sterling

Bowie

Gettysburg

National Harbor

Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Portugal to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$480	Average$772	FlexibilityNo cancel fee	On-timeN/A
Lufthansa	Cheapest$536	Average$779	FlexibilityNo cancel fee	On-time76%
United Airlines	Cheapest$543	Average$683	FlexibilityNo cancel fee	On-time69%

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$362+ Cheap flights from Portugal 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portugal to Dulles Intl with Cheapflights

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Cheap flight deals from Portugal to Dulles Intl

Keep the following information in mind while searching for Portugal to Dulles Intl flight deals. Data was last updated March 28, 2025.

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 Portugal to Dulles Intl

Cheapest flights from Portugal to Dulles IntlExplore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Explore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Portugal to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Portugal with our price prediction graph.

Cheapflights Insights

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

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

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

Find hourly flight availability from Portugal to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Delta, KLM and Air Transat from Portugal to Washington, D.C. have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portugal 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 are the cheapest airlines to fly from Portugal to Washington, D.C. Dulles Intl Airport one-way?

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

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

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

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

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

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

Traveling to a place near Portugal?

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Alternative routes for Portugal to Dulles Intl

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Top 3 airlines flying from Portugal to Dulles Intl

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Cheapest flights from Portugal to Dulles Intl
Explore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.