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

United Airlines, at $543, was found to be the cheapest airline from Porto to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include KLM and British Airways. United Airlines is priced at 25% lower than the current average price of a flight leaving 3 months from now.

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

To fly one-way, consider booking your trip with Royal Air Maroc, which is currently one of the cheapest options available, starting at $384. TAP AIR PORTUGAL flights start at $418 while deals on Iberia start at $535 one-way.

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

Currently, August is the cheapest month in which you can book a flight from Porto to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Porto to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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 day to fly from Porto to Washington, D.C. Dulles Intl Airport?

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

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

Flying to your destination on a Tuesday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C. Dulles Intl Airport. Check prices with Cheapflights to find a great deal for your trip.

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

The best pricing can be found in the month of May. Prices to Washington, D.C. Dulles Intl Airport from Porto average $726. You can even find prices in May for less than $726, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $544. The month of January appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Porto. Flying in the targeted month can save you up to 30%.

Most accurate provider : When it comes to deals on Porto-Washington, D.C. Dulles Intl Airport flights, users find the pricing of Gurufare to be most consistent on Cheapflights vs. Gurufare Users can find the same prices on Porto-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. Gurufare >95% of the time. Price accuracy is based on data collected from Porto-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 Porto-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust Gurufare the most. Gurufare 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 Porto-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 Porto to Washington, D.C. Dulles Intl?

Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to Washington, D.C. Dulles Intl. 1 airline have flights from Porto to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Porto to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Porto 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.

$360+ Flights from Porto to Washington, D.C. Dulles Intl Airport - Compare & Save Big

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Cheap flight deals from Porto to Dulles Intl

Most accurate provider	Gurufare 3 stars
Most trusted provider	Gurufare 3 stars
Round-trip from	$543 (United Airlines)
One-way from	$360 (Kiwi.com)
Popular in	July
Cheapest in	April
Average price	$556

Provider with most accurate pricing for Porto-Washington, D.C. Dulles Intl flight deals.

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Provider most trusted by Cheapflights users for Porto-Washington, D.C. Dulles Intl flights.

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From Porto to Washington, D.C. Dulles Intl

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

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($159 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from Porto to Dulles Intl

Cheapest flights from Porto to Dulles Intl
Explore the most affordable flight options available from Porto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Thu 6/1212:10 pmOPO - IAD

1 stop28h 04mUnited Airlines

Wed 6/259:00 amIAD - OPO

1 stop17h 05mUnited Airlines

Deal found 4/29

$543

Sun 6/86:20 pmOPO - IAD

1 stop26h 15mKLM

Sat 6/215:25 pmIAD - OPO

1 stop19h 15mKLM

Deal found 4/29

$557

Sun 6/89:25 pmOPO - IAD

1 stop25h 10mBritish Airways

Sun 6/2210:40 pmIAD - OPO

1 stop16h 40mBritish Airways

Deal found 4/29

$561

Sun 6/85:00 amOPO - IAD

1 stop15h 35mDelta

Sat 6/2112:13 pmIAD - OPO

2 stops17h 27mDelta

Deal found 4/29

$607

Sun 6/86:15 amOPO - IAD

2 stops36h 15mLufthansa

Sun 6/2210:20 pmIAD - OPO

1 stop17h 40mLufthansa

Deal found 4/29

$610

Wed 8/208:15 amOPO - IAD

1 stop11h 45mIberia

Wed 10/14:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 4/29

$638

Sun 6/811:20 amOPO - IAD

2 stops27h 21mMultiple Airlines

Sat 6/213:30 pmIAD - OPO

2 stops14h 45mMultiple Airlines

Deal found 4/29

$693

Mon 5/54:20 pmOPO - IAD

1 stop29h 00mAir France

Fri 5/99:20 pmIAD - OPO

1 stop18h 15mAir France

Deal found 4/29

$745

Mon 5/52:35 pmOPO - IAD

2 stops30h 40mSWISS

Fri 5/95:35 pmIAD - OPO

1 stop19h 55mSWISS

Deal found 4/29

$987

Sun 6/811:20 amOPO - IAD

2 stops15h 07mAir Canada

Sat 6/213:30 pmIAD - OPO

2 stops14h 45mAir Canada

Deal found 4/29

$1,016

Thu 6/128:15 amOPO - IAD

2 stops16h 29mAmerican Airlines

Wed 6/251:08 pmIAD - OPO

2 stops13h 27mAmerican Airlines

Deal found 4/29

$1,154

Best flights from Porto to Dulles Intl
Discover carefully curated flight deals from Porto to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2025.

Thu 6/1212:10 pmOPO - IAD

1 stop28h 04mUnited Airlines

Wed 6/259:00 amIAD - OPO

1 stop17h 05mUnited Airlines

Deal found 4/29

$543

Sun 6/86:20 pmOPO - IAD

1 stop26h 15mKLM

Sat 6/215:25 pmIAD - OPO

1 stop19h 15mKLM

Deal found 4/29

$557

Sun 6/89:25 pmOPO - IAD

1 stop25h 10mBritish Airways

Sun 6/2210:40 pmIAD - OPO

1 stop16h 40mBritish Airways

Deal found 4/29

$561

Sun 6/85:00 amOPO - IAD

1 stop15h 35mDelta

Sat 6/2112:13 pmIAD - OPO

2 stops17h 27mDelta

Deal found 4/29

$607

Sun 6/86:15 amOPO - IAD

2 stops36h 15mLufthansa

Sun 6/2210:20 pmIAD - OPO

1 stop17h 40mLufthansa

Deal found 4/29

$610

Wed 8/208:15 amOPO - IAD

1 stop11h 45mIberia

Wed 10/14:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 4/29

$638

Sun 6/811:20 amOPO - IAD

2 stops27h 21mMultiple Airlines

Sat 6/213:30 pmIAD - OPO

2 stops14h 45mMultiple Airlines

Deal found 4/29

$693

Sun 6/811:20 amOPO - IAD

2 stops15h 07mAir Canada

Sat 6/213:30 pmIAD - OPO

2 stops14h 45mAir Canada

Deal found 4/29

$1,016

Thu 6/128:15 amOPO - IAD

2 stops16h 29mAmerican Airlines

Wed 6/251:08 pmIAD - OPO

2 stops13h 27mAmerican Airlines

Deal found 4/29

$1,154

Last-minute flights from Porto to Dulles Intl
Discover last-minute flight deals from Porto to Dulles Intl. Data last updated April 30, 2025 and is based on user searches.

Mon 5/54:20 pmOPO - IAD

1 stop29h 00mAir France

Fri 5/99:20 pmIAD - OPO

1 stop18h 15mAir France

Deal found 4/29

$745

Mon 5/52:35 pmOPO - IAD

2 stops30h 40mSWISS

Fri 5/95:35 pmIAD - OPO

1 stop19h 55mSWISS

Deal found 4/29

$987

Tue 5/66:20 amOPO - IAD

1 stop14h 15mMultiple Airlines

Fri 5/99:20 pmIAD - OPO

1 stop18h 15mMultiple Airlines

Deal found 4/29

$782

One-way flights from Porto to Dulles Intl
Search for one-way flight options from Porto to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated April 30, 2025.

Thu 5/2911:35 amOPO - IAD

2 stops32h 18mMultiple Airlines

Deal found 4/29

$360

Sun 6/17:00 pmOPO - IAD

1 stop29h 05mRoyal Air Maroc

Deal found 4/29

$384

Thu 5/157:00 amOPO - IAD

1 stop13h 20mTAP AIR PORTUGAL

Deal found 4/29

$418

Tue 10/218:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 4/29

$535

Wed 8/278:20 pmOPO - IAD

1 stop24h 35mBritish Airways

Deal found 4/29

$589

Sun 5/2510:45 amOPO - IAD

1 stop30h 00mTurkish Airlines

Deal found 4/29

$603

Wed 6/46:15 amOPO - IAD

2 stops14h 35mLufthansa

Deal found 4/29

$617

Tue 9/236:15 amOPO - IAD

2 stops21h 45mDelta

Deal found 4/29

$638

Thu 5/157:20 pmOPO - IAD

2 stops23h 55mSWISS

Deal found 4/29

$647

Mon 7/219:20 amOPO - IAD

1 stop14h 55mKLM

Deal found 4/29

$654

Sun 8/179:20 amOPO - IAD

1 stop14h 55mAir France

Deal found 4/29

$692

Sun 7/2711:20 amOPO - IAD

2 stops16h 07mUnited Airlines

Deal found 4/29

$792

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 6/12

12:10 pm-11:14 am

1 stop28h 04m

Washington, D.C. Dulles Intl

Wed 6/25

9:00 am-7:05 am

1 stop17h 05m

$543

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

6:20 pm-3:35 pm

1 stop26h 15m

Washington, D.C. Dulles Intl

Sat 6/21

5:25 pm-5:40 pm

1 stop19h 15m

$557

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

9:25 pm-5:35 pm

1 stop25h 10m

Washington, D.C. Dulles Intl

Sun 6/22

10:40 pm-8:20 pm

1 stop16h 40m

$561

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sat 6/21

12:13 pm-10:40 am

2 stops17h 27m

$607

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

6:15 am-1:30 pm

2 stops36h 15m

Washington, D.C. Dulles Intl

Sun 6/22

10:20 pm-9:00 pm

1 stop17h 40m

$610

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 8/20

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 10/1

4:35 pm-3:55 pm

1 stop18h 20m

$638

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

11:20 am-9:41 am

2 stops27h 21m

Washington, D.C. Dulles Intl

Sat 6/21

3:30 pm-11:15 am

2 stops14h 45m

$693

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

11:20 am-9:27 pm

2 stops15h 07m

Washington, D.C. Dulles Intl

Sat 6/21

3:30 pm-11:15 am

2 stops14h 45m

$1,016

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 6/12

8:15 am-7:44 pm

2 stops16h 29m

Washington, D.C. Dulles Intl

Wed 6/25

1:08 pm-7:35 am

2 stops13h 27m

$1,154

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 5/29

11:35 am-2:53 pm

2 stops32h 18m

$360

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 23 results

Compare providers for flights from Porto to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Porto to Dulles Intl in April.

Provider	Price Accuracy	Trust Score*
Gurufare	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Gotogate	Price Accuracy3 stars	Trust Score*2 stars
Mytrip	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
Trip.com	Price Accuracy1 star	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 Porto-Washington, D.C. Dulles Intl Airport flights, users find the pricing of Gurufare to be most consistent on Cheapflights vs. Gurufare Users can find the same prices on Porto-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. Gurufare >95% of the time. Price accuracy is based on data collected from Porto-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 Porto-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust Gurufare the most. Gurufare 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 Porto-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 Porto to Dulles Intl

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

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto to Washington, D.C. Dulles Intl Airport as you normally would.

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

Emirates

8.0

Very good

3,215 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Emirates

8.0

Very good

3,215 reviews

Emirates

8.0

Very good

3,215 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

Delta

8.0

Very good

7,936 reviews

Emirates

8.0

Very good

3,215 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

KLM

7.8

Good

1,333 reviews

Emirates

8.0

Very good

3,215 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

SWISS

7.5

Good

1,588 reviews

Emirates

8.0

Very good

3,215 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

Air France

7.4

Good

1,446 reviews

Emirates

8.0

Very good

3,215 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

Related info for your journey

What airport do you fly from for flights from Porto to Washington, D.C. Dulles Intl?
Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to Washington, D.C. Dulles Intl. 1 airline have flights from Porto to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Porto to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.
What are the cheapest airlines flying from Porto to Washington, D.C. Dulles Intl Airport round-trip?
United Airlines, at $543, was found to be the cheapest airline from Porto to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include KLM and British Airways. United Airlines is priced at 25% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Porto to Washington, D.C. Dulles Intl Airport one-way?
To fly one-way, consider booking your trip with Royal Air Maroc, which is currently one of the cheapest options available, starting at $384. TAP AIR PORTUGAL flights start at $418 while deals on Iberia start at $535 one-way.
Can I find deals for flights from Porto to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Porto to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Porto to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Dulles Intl.
Can I find deals for business class flights from Porto to Dulles Intl?
Yes. Cheapflights offers flight deals from Porto 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 Porto to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Porto to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Porto to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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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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 airline flying from Porto to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$480	Average$812	FlexibilityNo cancel fee	On-timeN/A

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$360+ Cheap flights from Porto (OPO) 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 Porto to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Porto to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Porto to Dulles Intl

Cheapest flights from Porto to Dulles IntlExplore the most affordable flight options available from Porto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Explore the most affordable flight options available from Porto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Porto to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Porto to Dulles Intl in April.

Best time to book a flight from Porto to Dulles Intl

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

Cheapflights Insights

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

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

Find hourly flight availability from Porto 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 30, 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

Related info for your journey

Find useful and relevant information for your journey from Porto 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 Porto to Washington, D.C. Dulles Intl?

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

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

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

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

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

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

Traveling to a place near Porto?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Porto to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Porto to Dulles Intl

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Cheapest flights from Porto to Dulles Intl
Explore the most affordable flight options available from Porto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.