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 TAP AIR PORTUGAL ($377), Royal Air Maroc ($384), and Aer Lingus ($459).

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 $347. On average you can expect to pay $1,227. The most popular route, (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), can usually be booked for $524.

What are the most reliable airlines from Portugal 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 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?

Thursday is generally a great day to depart. Flying on this day could help you save up to 17%.

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 $542, or $750 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 $665. You can even find prices in September for less than $665, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $495. 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 32%.

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.

$777+ 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	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$526 (Iberia)
One-way from	$361 (Kiwi.com)
Popular in	July
Cheapest in	September
Average price	$649
Good round-trip deal	$472 or less
Good one-way deal	$557 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. 17% potential increase in price ($140 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

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Average for round-trip flights in April 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 April 22, 2025.

Tue 5/208:25 amLIS - IAD

1 stop11h 35mMultiple Airlines

Tue 5/277:25 pmIAD - LIS

1 stop15h 05mMultiple Airlines

Deal found 4/22

$526

Sat 5/37:10 amLIS - IAD

1 stop18h 00mBritish Airways

Thu 5/810:40 pmIAD - LIS

1 stop19h 25mBritish Airways

Deal found 4/22

$539

Thu 5/225:00 amLIS - IAD

1 stop15h 35mDelta

Thu 5/299:20 pmIAD - LIS

1 stop15h 30mDelta

Deal found 4/22

$540

Wed 4/3012:10 pmLIS - IAD

1 stop12h 05mAir France

Sun 5/49:20 pmIAD - LIS

1 stop20h 05mAir France

Deal found 4/22

$541

Sun 5/117:30 pmLIS - IAD

1 stop25h 05mKLM

Mon 5/2612:20 pmIAD - LIS

1 stop14h 40mKLM

Deal found 4/22

$543

Sat 5/246:55 pmOPO - IAD

1 stop25h 40mKLM

Thu 6/55:25 pmIAD - OPO

1 stop21h 15mKLM

Deal found 4/21

$557

Sun 5/1110:00 amLIS - IAD

1 stop14h 39mVirgin Atlantic

Mon 5/2612:20 pmIAD - LIS

1 stop14h 40mVirgin Atlantic

Deal found 4/22

$563

Sun 6/89:15 amOPO - IAD

1 stop17h 01mUnited Airlines

Sat 6/213:25 pmIAD - OPO

1 stop14h 50mUnited Airlines

Deal found 4/21

$568

Wed 11/127:30 pmOPO - IAD

1 stop26h 00mMultiple Airlines

Wed 12/310:05 pmIAD - OPO

1 stop12h 10mMultiple Airlines

Deal found 4/20

$569

Sat 11/156:15 amOPO - IAD

1 stop18h 50mLufthansa

Wed 12/310:05 pmIAD - OPO

1 stop12h 10mLufthansa

Deal found 4/20

$572

Sat 5/311:25 amLIS - IAD

1 stop14h 43mUnited Airlines

Tue 11/410:05 pmIAD - LIS

Nonstop7h 10mUnited Airlines

Deal found 4/22

$575

Tue 11/117:30 pmOPO - IAD

1 stop25h 00mSWISS

Mon 12/15:25 pmIAD - OPO

1 stop12h 50mSWISS

Deal found 4/20

$575

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 April 22, 2025.

Thu 5/226:35 amLIS - IAD

1 stop13h 25mMultiple Airlines

Thu 5/2910:40 pmIAD - LIS

1 stop14h 30mMultiple Airlines

Deal found 4/21

$526

Mon 5/55:00 amLIS - IAD

1 stop15h 35mDelta

Sat 6/78:33 pmIAD - LIS

2 stops16h 22mDelta

Deal found 4/21

$534

Sun 5/187:20 amLIS - IAD

1 stop17h 50mBritish Airways

Thu 8/710:40 pmIAD - LIS

1 stop14h 30mBritish Airways

Deal found 4/21

$538

Fri 5/23:35 pmLIS - IAD

1 stop29h 00mKLM

Thu 5/85:25 pmIAD - LIS

1 stop24h 25mKLM

Deal found 4/22

$542

Wed 6/410:00 amLIS - IAD

1 stop14h 39mVirgin Atlantic

Mon 6/912:13 pmIAD - LIS

2 stops17h 32mVirgin Atlantic

Deal found 4/20

$557

Sun 6/89:15 amOPO - IAD

1 stop17h 01mUnited Airlines

Sat 6/213:25 pmIAD - OPO

1 stop14h 50mUnited Airlines

Deal found 4/21

$568

Sun 5/1112:20 pmLIS - IAD

Nonstop8h 25mLufthansa

Mon 5/2610:15 pmIAD - LIS

Nonstop7h 15mLufthansa

Deal found 4/21

$574

Sat 5/247:20 pmOPO - IAD

1 stop25h 55mSWISS

Fri 6/68:45 pmIAD - OPO

1 stop30h 10mSWISS

Deal found 4/21

$586

Sun 5/411:25 amLIS - IAD

2 stops25h 30mAir Canada

Tue 11/43:55 pmIAD - LIS

1 stop12h 25mAir Canada

Deal found 4/21

$591

Thu 8/216:35 amLIS - IAD

2 stops17h 59mAmerican Airlines

Tue 8/261:56 pmIAD - LIS

2 stops14h 09mAmerican Airlines

Deal found 4/21

$641

Wed 8/209:15 pmOPO - IAD

1 stop23h 05mTAP AIR PORTUGAL

Wed 10/110:20 pmIAD - OPO

1 stop11h 40mTAP AIR PORTUGAL

Deal found 4/21

$651

Sat 8/166:35 amLIS - IAD

1 stop13h 25mFinnair

Sat 8/3010:45 pmIAD - LIS

1 stop12h 30mFinnair

Deal found 4/21

$669

Last-minute flights from Portugal to Dulles Intl
Discover last-minute flight deals from Portugal to Dulles Intl. Data last updated April 22, 2025 and is based on user searches.

Wed 4/3012:10 pmLIS - IAD

1 stop12h 05mAir France

Sun 5/49:20 pmIAD - LIS

1 stop20h 05mAir France

Deal found 4/22

$541

Wed 4/3011:05 amLIS - IAD

2 stops13h 36mAmerican Airlines

Sun 5/410:40 pmIAD - LIS

1 stop14h 15mAmerican Airlines

Deal found 4/22

$578

Wed 4/3011:00 amLIS - IAD

3 stops47h 40mCathay Pacific

Sun 5/47:00 amIAD - LIS

3 stops46h 05mCathay Pacific

Deal found 4/22

$16,644

Thu 5/112:10 pmLIS - IAD

1 stop12h 05mDelta

Sat 5/109:20 pmIAD - LIS

1 stop15h 35mDelta

Deal found 4/22

$542

Thu 5/15:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Sat 5/1010:35 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 4/22

$884

Fri 5/28:25 amLIS - IAD

1 stop11h 35mMultiple Airlines

Tue 11/46:15 pmIAD - LIS

1 stop12h 50mMultiple Airlines

Deal found 4/22

$577

Fri 5/211:25 amLIS - IAD

1 stop14h 43mUnited Airlines

Tue 11/410:05 pmIAD - LIS

Nonstop7h 10mUnited Airlines

Deal found 4/22

$581

Fri 5/27:20 amLIS - IAD

2 stops21h 36mBritish Airways

Thu 5/810:40 pmIAD - LIS

1 stop19h 25mBritish Airways

Deal found 4/22

$589

Fri 5/212:20 pmLIS - IAD

Nonstop8h 25mLufthansa

Tue 11/410:05 pmIAD - LIS

Nonstop7h 10mLufthansa

Deal found 4/22

$630

Fri 5/210:00 amLIS - IAD

2 stops19h 28mVirgin Atlantic

Tue 11/412:35 pmIAD - LIS

2 stops15h 25mVirgin Atlantic

Deal found 4/22

$670

Fri 5/212:55 pmLIS - IAD

2 stops27h 19mAir Canada

Thu 5/89:45 amIAD - LIS

2 stops20h 45mAir Canada

Deal found 4/22

$772

Sat 5/37:10 amLIS - IAD

1 stop18h 00mBritish Airways

Thu 5/810:40 pmIAD - LIS

1 stop19h 25mBritish Airways

Deal found 4/22

$539

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 April 22, 2025.

Thu 5/2911:35 amOPO - IAD

2 stops32h 18mMultiple Airlines

Deal found 4/22

$361

Tue 5/208:05 pmLIS - IAD

2 stops47h 48mMultiple Airlines

Deal found 4/20

$372

Wed 5/2112:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/21

$377

Sun 6/17:00 pmOPO - IAD

1 stop29h 05mRoyal Air Maroc

Deal found 4/21

$384

Thu 5/159:00 amOPO - IAD

1 stop16h 50mTAP AIR PORTUGAL

Deal found 4/21

$418

Tue 10/76:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 4/21

$419

Sun 5/410:15 pmLIS - IAD

1 stop22h 35mAer Lingus

Deal found 4/21

$459

Tue 9/238:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 4/21

$535

Fri 10/176:35 amLIS - IAD

1 stop13h 25mFinnair

Deal found 4/21

$538

Wed 9/106:35 amLIS - IAD

2 stops18h 35mIberia

Deal found 4/21

$550

Thu 5/228:25 amLIS - IAD

2 stops16h 07mAmerican Airlines

Deal found 4/21

$554

Sat 5/317:10 amLIS - IAD

1 stop18h 00mBritish Airways

Deal found 4/21

$557

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

Tue 5/20

8:25 am-3:00 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Tue 5/27

7:25 pm-3:30 pm

1 stop15h 05m

$526

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 5/3

7:10 am-8:10 pm

1 stop18h 00m

Washington, D.C. Dulles Intl

Thu 5/8

10:40 pm-11:05 pm

1 stop19h 25m

$539

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 5/22

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Thu 5/29

9:20 pm-5:50 pm

1 stop15h 30m

$540

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 5/2

3:35 pm-3:35 pm

1 stop29h 00m

Washington, D.C. Dulles Intl

Thu 5/8

5:25 pm-10:50 pm

1 stop24h 25m

$542

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sat 5/24

6:55 pm-3:35 pm

1 stop25h 40m

Washington, D.C. Dulles Intl

Thu 6/5

5:25 pm-7:40 pm

1 stop21h 15m

$557

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 5/11

10:00 am-7:39 pm

1 stop14h 39m

Washington, D.C. Dulles Intl

Mon 5/26

12:20 pm-8:00 am

1 stop14h 40m

$563

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

9:15 am-9:16 pm

1 stop17h 01m

Washington, D.C. Dulles Intl

Sat 6/21

3:25 pm-11:15 am

1 stop14h 50m

$568

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 5/3

11:25 am-9:08 pm

1 stop14h 43m

Washington, D.C. Dulles Intl

Tue 11/4

10:05 pm-10:15 am

Nonstop7h 10m

$575

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sat 5/24

7:20 pm-4:15 pm

1 stop25h 55m

Washington, D.C. Dulles Intl

Fri 6/6

8:45 pm-7:55 am

1 stop30h 10m

$586

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

Fri 5/23

10:40 pm-6:05 pm

1 stop14h 25m

$588

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 56 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 $383). 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 29% 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 Finnair 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

7,920 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

7,920 reviews

Delta

8.0

Very good

7,920 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

1,331 reviews

Delta

8.0

Very good

7,920 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

1,272 reviews

Delta

8.0

Very good

7,920 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

Austrian Airlines

7.6

Good

780 reviews

Delta

8.0

Very good

7,920 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

1,582 reviews

Delta

8.0

Very good

7,920 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 TAP AIR PORTUGAL ($377), Royal Air Maroc ($384), and Aer Lingus ($459).
What are the most reliable airlines from Portugal 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 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 $347. On average you can expect to pay $1,227. The most popular route, (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), can usually be booked for $524.
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 $383). 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

Woodbridge

Fairfax

Tysons

Springfield

Rockville

Fredericksburg

Gaithersburg

Silver Spring

Linthicum Heights

Falls Church

Laurel

Easton

Herndon

Sterling

Bowie

Towson

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$771	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$534	Average$634	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$536	Average$779	FlexibilityNo cancel fee	On-time76%

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$361+ 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 5/29. 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 April 22, 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 April 22, 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 April 22, 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 April 22, 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 Finnair 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?

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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 April 22, 2025.