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

According to our current data, PLAY ($435), Iberia ($517), and KLM ($522) offers the cheapest pricing from Porto to Washington, D.C.. You may be able to fly from Porto to Washington, D.C. for 40% less than the average price by searching for these airlines.

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

One-way options have recently been found by users for as low as $362 on Royal Air Maroc. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $400 and British Airways from $512 one-way.

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

Currently, August is the cheapest month in which you can book a flight from Porto to Washington, D.C. (average of $309). Flying from Porto to Washington, D.C. 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 day to fly from Porto to Washington, D.C.?

Travelers seeking maximum savings on their Porto to Washington, D.C. flight should consider departing on Tuesday 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 are the most popular routes from Porto to Washington, D.C.?

When deciding which route to take from Porto to Washington, D.C. consider Porto - Washington, D.C. Dulles Intl, Porto - Washington, D.C. Reagan-National or Porto - Baltimore/Washington as they are the most popular.

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

Flights from Porto to Washington, D.C. are found to be more expensive on Friday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

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

November is one of the best times of the year to fly to Washington, D.C. from Porto. Prices for November average $737 per person but you can even find prices for as low as $525. The most expensive prices can be found in the month of January. Opting for a November flight can save you 28% on your journey compared to booking in January

Most accurate provider : When it comes to deals on Porto-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Porto-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub 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. 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.?

Porto (OPO) is the airport you will fly out of if you book a flight from Porto to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Porto; the airport handles an average of 0 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Porto airport to Washington, D.C.. It is only a 6.8 mi journey to Porto (OPO) from Porto’s city center.

Can I find deals for flights from Porto to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Porto to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Porto to Washington, D.C.?

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

Can I find deals for business class flights from Porto to Washington, D.C.?

Yes. Cheapflights offers flight deals from Porto to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$352+ Flights from Porto to Washington, D.C.

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap flight deals from Porto to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$435 (Mytrip)
One-way from	$352 (Kiwi.com)
Popular in	January
Cheapest in	November
Average price	$638

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

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

Search Deals

From Porto to Washington, D.C. (WAS)

Search Deals

One-way flight from Porto to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($46 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Find flight deals from Porto to Washington, D.C.

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

Thu 5/19:10 pmOPO - BWI

1 stop25h 30mPLAY

Sat 5/176:50 pmBWI - OPO

1 stop20h 15mPLAY

Deal found 3/27

$435

Fri 5/168:15 amOPO - IAD

1 stop11h 45mIberia

Thu 5/294:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 3/26

$517

Sat 4/126:55 pmOPO - IAD

1 stop25h 40mKLM

Sat 4/196:30 pmIAD - OPO

1 stop16h 00mKLM

Deal found 3/27

$522

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

Wed 4/168:40 amOPO - IAD

1 stop12h 35mSWISS

Wed 4/308:45 pmIAD - OPO

1 stop16h 45mSWISS

Deal found 3/27

$560

Thu 5/16:00 amOPO - IAD

1 stop14h 50mLufthansa

Sat 5/1710:20 pmIAD - OPO

2 stops19h 25mLufthansa

Deal found 3/27

$580

Thu 5/19:25 amOPO - BWI

2 stops18h 57mDelta

Sat 5/176:23 pmBWI - OPO

2 stops18h 17mDelta

Deal found 3/27

$584

Thu 5/19:25 amOPO - DCA

2 stops18h 20mDelta

Sat 5/176:32 pmDCA - OPO

2 stops18h 08mDelta

Deal found 3/27

$597

Sat 10/186:00 amOPO - IAD

1 stop14h 50mUnited Airlines

Sat 10/1810:05 pmIAD - OPO

2 stops32h 10mUnited Airlines

Deal found 3/27

$608

Thu 5/14:00 pmOPO - IAD

3 stops32h 59mMultiple Airlines

Sat 5/1710:05 pmIAD - OPO

3 stops29h 55mMultiple Airlines

Deal found 3/27

$669

Sun 5/118:15 amOPO - DCA

2 stops15h 52mAmerican Airlines

Sun 5/1810:55 amDCA - OPO

2 stops15h 40mAmerican Airlines

Deal found 3/26

$688

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

Thu 5/19:10 pmOPO - BWI

1 stop25h 30mPLAY

Sat 5/176:50 pmBWI - OPO

1 stop20h 15mPLAY

Deal found 3/27

$435

Fri 5/168:15 amOPO - IAD

1 stop11h 45mIberia

Thu 5/294:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 3/26

$517

Sat 4/126:55 pmOPO - IAD

1 stop25h 40mKLM

Sat 4/196:30 pmIAD - OPO

1 stop16h 00mKLM

Deal found 3/27

$522

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

Wed 4/168:40 amOPO - IAD

1 stop12h 35mSWISS

Wed 4/308:45 pmIAD - OPO

1 stop16h 45mSWISS

Deal found 3/27

$560

Thu 5/16:00 amOPO - IAD

1 stop14h 50mLufthansa

Sat 5/1710:20 pmIAD - OPO

2 stops19h 25mLufthansa

Deal found 3/27

$580

Thu 5/14:00 pmOPO - IAD

3 stops32h 59mMultiple Airlines

Sat 5/1710:05 pmIAD - OPO

3 stops29h 55mMultiple Airlines

Deal found 3/27

$669

Sun 5/118:15 amOPO - DCA

2 stops15h 52mAmerican Airlines

Sun 5/1810:55 amDCA - OPO

2 stops15h 40mAmerican Airlines

Deal found 3/26

$688

Sat 4/1212:35 pmOPO - DCA

1 stop12h 07mUnited Airlines

Sat 4/191:19 pmDCA - OPO

2 stops21h 26mUnited Airlines

Deal found 3/27

$934

Thu 5/19:25 amOPO - BWI

2 stops18h 57mDelta

Sat 5/176:23 pmBWI - OPO

2 stops18h 17mDelta

Deal found 3/27

$584

Thu 5/16:05 pmOPO - DCA

1 stop32h 37mTAP AIR PORTUGAL

Sat 5/174:15 pmDCA - OPO

1 stop13h 40mTAP AIR PORTUGAL

Deal found 3/27

$1,299

Last-minute flights from Porto to Washington, D.C.
Discover last-minute flight deals from Porto to Washington, D.C.. Data last updated March 28, 2025 and is based on user searches.

Thu 3/276:00 amOPO - DCA

2 stops20h 37mAir Canada

Thu 4/34:10 pmDCA - OPO

2 stops14h 55mAir Canada

Deal found 3/26

$2,323

Mon 3/3110:00 pmOPO - IAD

2 stops27h 10mIberia

Thu 5/154:35 pmIAD - OPO

1 stop10h 00mIberia

Deal found 3/27

$892

Mon 3/318:15 amOPO - IAD

3 stops20h 43mAmerican Airlines

Thu 5/159:11 amIAD - OPO

2 stops17h 24mAmerican Airlines

Deal found 3/27

$4,316

Sat 4/126:55 pmOPO - IAD

1 stop25h 40mKLM

Sat 4/196:30 pmIAD - OPO

1 stop16h 00mKLM

Deal found 3/27

$522

Sat 4/126:40 amOPO - DCA

2 stops21h 02mDelta

Sat 4/196:15 pmDCA - OPO

2 stops16h 15mDelta

Deal found 3/27

$871

Sat 4/1212:35 pmOPO - DCA

1 stop12h 07mUnited Airlines

Sat 4/191:19 pmDCA - OPO

2 stops21h 26mUnited Airlines

Deal found 3/27

$934

Sat 4/126:40 amOPO - BWI

2 stops20h 51mDelta

Sat 4/195:30 pmBWI - OPO

2 stops17h 00mDelta

Deal found 3/27

$1,733

Sun 4/135:00 amOPO - IAD

1 stop15h 35mDelta

Fri 4/188:33 pmIAD - OPO

2 stops16h 37mDelta

Deal found 3/27

$531

Sun 4/132:50 pmOPO - IAD

2 stops35h 00mMultiple Airlines

Fri 4/185:00 pmIAD - OPO

2 stops23h 20mMultiple Airlines

Deal found 3/27

$799

Wed 4/168:40 amOPO - IAD

1 stop12h 35mSWISS

Wed 4/308:45 pmIAD - OPO

1 stop16h 45mSWISS

Deal found 3/27

$560

Wed 4/166:15 amOPO - IAD

2 stops18h 30mLufthansa

Wed 4/3010:20 pmIAD - OPO

2 stops19h 25mLufthansa

Deal found 3/27

$644

Wed 4/168:15 amOPO - DCA

2 stops15h 44mAmerican Airlines

Wed 4/3011:40 amDCA - OPO

2 stops14h 55mAmerican Airlines

Deal found 3/27

$848

One-way flights from Porto to Washington, D.C.
Search for one-way flight options from Porto to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated March 28, 2025.

Sun 4/277:40 amOPO - BWI

3 stops59h 07mMultiple Airlines

Deal found 3/26

$352

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

Sun 4/276:30 amOPO - IAD

2 stops39h 05mMultiple Airlines

Deal found 3/26

$443

Thu 5/2911:35 amOPO - DCA

2 stops27h 40mMultiple Airlines

Deal found 3/27

$471

Sat 5/2410:40 amOPO - DCA

2 stops16h 56mBritish Airways

Deal found 3/27

$512

Thu 5/158:35 pmOPO - IAD

2 stops28h 30mIberia

Deal found 3/27

$513

Sun 6/158:35 pmOPO - BWI

2 stops28h 00mIberia

Deal found 3/28

$533

Sat 9/2010:40 amOPO - BWI

1 stop13h 55mBritish Airways

Deal found 3/26

$546

Sat 5/248:15 amOPO - IAD

1 stop11h 45mBritish Airways

Deal found 3/27

$564

Mon 4/144:50 pmOPO - IAD

1 stop23h 55mTurkish Airlines

Deal found 3/27

$580

Thu 5/296:30 amOPO - BWI

2 stops17h 37mDelta

Deal found 3/27

$582

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 5/1

9:10 pm-5:40 pm

1 stop25h 30m

Baltimore/Washington

Sat 5/17

6:50 pm-8:05 pm

1 stop20h 15m

$435

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

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

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

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 5/1

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Sat 5/17

10:45 pm-8:35 pm

1 stop16h 50m

$533

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 4/16

8:40 am-4:15 pm

1 stop12h 35m

Washington, D.C. Dulles Intl

Wed 4/30

8:45 pm-6:30 pm

1 stop16h 45m

$560

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 5/1

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Sat 5/17

10:20 pm-10:45 pm

2 stops19h 25m

$580

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 5/1

9:25 am-11:22 pm

2 stops18h 57m

Baltimore/Washington

Sat 5/17

6:23 pm-5:40 pm

2 stops18h 17m

$584

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 5/1

9:25 am-10:45 pm

2 stops18h 20m

Washington, D.C. Reagan-National

Sat 5/17

6:32 pm-5:40 pm

2 stops18h 08m

$597

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 5/1

4:00 pm-7:59 pm

3 stops32h 59m

Washington, D.C. Dulles Intl

Sat 5/17

10:05 pm-9:00 am

3 stops29h 55m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 37 results

Compare providers for flights from Porto to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Porto to Washington, D.C. in March.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	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 Porto-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Porto-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub 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. 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 Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

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

A simple way to save on the total cost of your ticket is to fly from Porto to Washington, D.C. in the morning. If you’re flexible enough to do this you can expect to save up to 32% on your trip compared to booking a flight at noon.

Rainfall in Washington, D.C. by month

In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

If weather is an important factor for your trip to Washington, D.C., 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 Washington, D.C.

Read reviews from past customers who have flown Delta, KLM and SWISS from Porto to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,897 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

7,897 reviews

Delta

8.0

Very good

7,897 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

7,897 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

7,897 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

United Airlines

7.4

Good

8,603 reviews

Delta

8.0

Very good

7,897 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

Turkish Airlines

7.3

Good

3,744 reviews

Delta

8.0

Very good

7,897 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 airport do you fly from for flights from Porto to Washington, D.C.?
Porto (OPO) is the airport you will fly out of if you book a flight from Porto to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Porto; the airport handles an average of 0 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Porto airport to Washington, D.C.. It is only a 6.8 mi journey to Porto (OPO) from Porto’s city center.
What are the cheapest airlines flying from Porto to Washington, D.C. round-trip?
According to our current data, PLAY ($435), Iberia ($517), and KLM ($522) offers the cheapest pricing from Porto to Washington, D.C.. You may be able to fly from Porto to Washington, D.C. for 40% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Porto to Washington, D.C. one-way?
One-way options have recently been found by users for as low as $362 on Royal Air Maroc. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $400 and British Airways from $512 one-way.
What are the most popular routes from Porto to Washington, D.C.?
When deciding which route to take from Porto to Washington, D.C. consider Porto - Washington, D.C. Dulles Intl, Porto - Washington, D.C. Reagan-National or Porto - Baltimore/Washington as they are the most popular.
Can I find deals for flights from Porto to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Porto to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Porto to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Washington, D.C..
Can I find deals for business class flights from Porto to Washington, D.C.?
Yes. Cheapflights offers flight deals from Porto to Washington, D.C. 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.?
Currently, August is the cheapest month in which you can book a flight from Porto to Washington, D.C. (average of $309). Flying from Porto to Washington, D.C. 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

Bowie

Gettysburg

National Harbor

Oxon Hill

Reston

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Porto to Washington, D.C.

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

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$352+ Cheap flights from Porto (OPO) to Washington, D.C. (WAS)

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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Porto to Washington, D.C. with Cheapflights

1. Tell us where you want to go

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Cheap flight deals from Porto to Washington, D.C.

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Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Porto to Washington, D.C.

Cheapest flights from Porto to Washington, D.C.Explore the most affordable flight options available from Porto to Washington, D.C.. 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 Porto to Washington, D.C.. 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 Porto to Washington, D.C. that are best for you.

Compare providers for flights from Porto to Washington, D.C.

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 Washington, D.C. in March.

Best time to book a flight from Porto to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Porto with our price prediction graph.

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

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

Find hourly flight availability from Porto to Washington, D.C.. 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 Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington, D.C.

Read reviews from past customers who have flown Delta, KLM and SWISS from Porto to Washington, D.C.. 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 Porto to Washington, D.C.. 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.?

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

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

What are the most popular routes from Porto to Washington, D.C.?

Can I find deals for flights from Porto to Washington, D.C. that include hotel bookings?

How can I find direct flights from Porto to Washington, D.C.?

Can I find deals for business class flights from Porto to Washington, D.C.?

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

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Alternative routes for Porto to Washington, D.C.

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