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

According to our current data, United Airlines ($543), KLM ($557), and Air Canada ($560) offers the cheapest pricing from Porto to Washington, D.C.. You may be able to fly from Porto to Washington, D.C. for 25% 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 $384 on Royal Air Maroc. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $418 and PLAY from $474 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 $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.?

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. Reagan-National, Porto - Washington, D.C. Dulles Intl 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.?

May is one of the best times of the year to fly to Washington, D.C. from Porto. Prices for May average $726 per person but you can even find prices for as low as $544. The most expensive prices can be found in the month of January. Opting for a May flight can save you 30% 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Porto-Washington, D.C. flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for 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.

$353+ Flights from Porto to Washington, D.C. - Compare & Save Big

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

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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$543 (United Airlines)
One-way from	$353 (Kiwi.com)
Popular in	January
Cheapest in	May
Average price	$632

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

Search Deals

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. 7% potential increase in price ($57 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 abril 29, 2025.

dom. 6/811:20 amOPO - DCA

1 stop27h 59mUnited Airlines

dom. 6/229:33 amDCA - OPO

1 stop16h 22mUnited Airlines

Deal found 4/29

$543

jue. 6/1212:10 pmOPO - IAD

1 stop28h 04mUnited Airlines

mié. 6/259:00 amIAD - OPO

1 stop17h 05mUnited Airlines

Deal found 4/29

$543

dom. 6/86:20 pmOPO - IAD

1 stop26h 15mKLM

sáb. 6/215:25 pmIAD - OPO

1 stop19h 15mKLM

Deal found 4/29

$557

mié. 10/86:00 amOPO - DCA

2 stops20h 51mAir Canada

mar. 10/2111:00 amDCA - OPO

2 stops19h 30mAir Canada

Deal found 4/29

$560

dom. 6/89:25 pmOPO - IAD

1 stop25h 10mBritish Airways

dom. 6/2210:40 pmIAD - OPO

1 stop16h 40mBritish Airways

Deal found 4/29

$561

dom. 6/88:15 amOPO - DCA

2 stops28h 35mBritish Airways

dom. 6/226:59 pmDCA - OPO

2 stops20h 21mBritish Airways

Deal found 4/29

$564

dom. 6/89:25 pmOPO - BWI

1 stop27h 10mBritish Airways

sáb. 6/219:20 pmBWI - OPO

1 stop32h 30mBritish Airways

Deal found 4/29

$595

dom. 6/85:00 amOPO - IAD

1 stop15h 35mDelta

sáb. 6/2112:13 pmIAD - OPO

2 stops17h 27mDelta

Deal found 4/29

$607

dom. 6/86:15 amOPO - IAD

2 stops36h 15mLufthansa

dom. 6/2210:20 pmIAD - OPO

1 stop17h 40mLufthansa

Deal found 4/29

$610

mié. 8/208:15 amOPO - IAD

1 stop11h 45mIberia

mié. 10/14:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 4/29

$638

mié. 8/206:00 amOPO - DCA

2 stops18h 03mMultiple Airlines

mié. 10/19:40 amDCA - OPO

2 stops20h 45mMultiple Airlines

Deal found 4/29

$669

dom. 6/811:20 amOPO - IAD

2 stops27h 21mMultiple Airlines

sáb. 6/213:30 pmIAD - OPO

2 stops14h 45mMultiple Airlines

Deal found 4/29

$693

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 abril 29, 2025.

dom. 6/811:20 amOPO - DCA

1 stop27h 59mUnited Airlines

dom. 6/229:33 amDCA - OPO

1 stop16h 22mUnited Airlines

Deal found 4/29

$543

dom. 6/86:20 pmOPO - IAD

1 stop26h 15mKLM

sáb. 6/215:25 pmIAD - OPO

1 stop19h 15mKLM

Deal found 4/29

$557

mié. 10/86:00 amOPO - DCA

2 stops20h 51mAir Canada

mar. 10/2111:00 amDCA - OPO

2 stops19h 30mAir Canada

Deal found 4/29

$560

dom. 6/89:25 pmOPO - IAD

1 stop25h 10mBritish Airways

dom. 6/2210:40 pmIAD - OPO

1 stop16h 40mBritish Airways

Deal found 4/29

$561

dom. 6/85:00 amOPO - IAD

1 stop15h 35mDelta

sáb. 6/2112:13 pmIAD - OPO

2 stops17h 27mDelta

Deal found 4/29

$607

dom. 6/86:15 amOPO - IAD

2 stops36h 15mLufthansa

dom. 6/2210:20 pmIAD - OPO

1 stop17h 40mLufthansa

Deal found 4/29

$610

mié. 8/208:15 amOPO - IAD

1 stop11h 45mIberia

mié. 10/14:35 pmIAD - OPO

1 stop18h 20mIberia

Deal found 4/29

$638

mié. 8/206:00 amOPO - DCA

2 stops18h 03mMultiple Airlines

mié. 10/19:40 amDCA - OPO

2 stops20h 45mMultiple Airlines

Deal found 4/29

$669

dom. 6/88:15 amOPO - DCA

2 stops19h 52mAmerican Airlines

sáb. 6/212:54 pmDCA - OPO

2 stops15h 46mAmerican Airlines

Deal found 4/29

$700

jue. 6/1212:10 pmOPO - IAD

1 stop28h 04mUnited Airlines

mié. 6/259:00 amIAD - OPO

1 stop17h 05mUnited Airlines

Deal found 4/29

$543

mié. 10/86:10 pmOPO - DCA

1 stop31h 41mTAP AIR PORTUGAL

mar. 10/211:45 pmDCA - OPO

2 stops19h 20mTAP AIR PORTUGAL

Deal found 4/29

$1,103

dom. 6/88:15 amOPO - DCA

2 stops28h 35mBritish Airways

dom. 6/226:59 pmDCA - OPO

2 stops20h 21mBritish Airways

Deal found 4/29

$564

Last-minute flights from Porto to Washington, D.C.
Discover last-minute flight deals from Porto to Washington, D.C.. Data last updated abril 29, 2025 and is based on user searches.

lun. 5/54:20 pmOPO - IAD

1 stop29h 00mAir France

vie. 5/99:20 pmIAD - OPO

1 stop18h 15mAir France

Deal found 4/29

$745

lun. 5/512:20 pmOPO - DCA

2 stops15h 16mAmerican Airlines

vie. 5/95:30 pmDCA - OPO

2 stops13h 10mAmerican Airlines

Deal found 4/29

$786

lun. 5/512:35 pmOPO - BWI

2 stops26h 19mUnited Airlines

vie. 5/96:45 amBWI - OPO

2 stops23h 30mUnited Airlines

Deal found 4/29

$897

lun. 5/52:35 pmOPO - IAD

2 stops30h 40mSWISS

vie. 5/95:35 pmIAD - OPO

1 stop19h 55mSWISS

Deal found 4/29

$987

lun. 5/51:30 pmOPO - DCA

2 stops25h 49mMultiple Airlines

vie. 5/98:40 pmDCA - OPO

1 stop10h 05mMultiple Airlines

Deal found 4/29

$1,026

mar. 5/66:20 amOPO - IAD

1 stop14h 15mMultiple Airlines

vie. 5/99:20 pmIAD - OPO

1 stop18h 15mMultiple Airlines

Deal found 4/29

$782

mar. 5/612:20 pmOPO - DCA

2 stops15h 16mIberia

vie. 5/912:35 pmDCA - OPO

2 stops14h 00mIberia

Deal found 4/29

$831

mar. 5/611:35 amOPO - BWI

3 stops35h 21mMultiple Airlines

vie. 5/95:35 amBWI - OPO

3 stops32h 10mMultiple Airlines

Deal found 4/29

$865

mar. 5/612:35 pmOPO - DCA

1 stop12h 06mUnited Airlines

vie. 5/911:00 amDCA - OPO

2 stops19h 15mUnited Airlines

Deal found 4/29

$1,009

mar. 5/66:20 amOPO - BWI

2 stops17h 30mKLM

vie. 5/92:29 pmBWI - OPO

2 stops15h 11mKLM

Deal found 4/29

$1,012

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 abril 29, 2025.

jue. 5/2911:35 amOPO - BWI

2 stops39h 38mMultiple Airlines

Deal found 4/29

$353

jue. 5/2911:35 amOPO - IAD

2 stops32h 18mMultiple Airlines

Deal found 4/29

$360

dom. 6/17:00 pmOPO - IAD

1 stop29h 05mRoyal Air Maroc

Deal found 4/29

$384

jue. 5/157:00 amOPO - IAD

1 stop13h 20mTAP AIR PORTUGAL

Deal found 4/29

$418

jue. 5/299:10 pmOPO - BWI

1 stop25h 30mPLAY

Deal found 4/29

$474

mar. 10/218:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 4/29

$535

sáb. 9/2010:40 amOPO - DCA

2 stops17h 20mMultiple Airlines

Deal found 4/29

$536

mar. 9/168:40 pmOPO - DCA

2 stops31h 20mBritish Airways

Deal found 4/29

$540

jue. 6/128:15 amOPO - BWI

2 stops17h 36mAmerican Airlines

Deal found 4/28

$541

jue. 5/2912:20 pmOPO - DCA

2 stops32h 35mAmerican Airlines

Deal found 4/29

$556

mar. 9/168:40 pmOPO - BWI

1 stop27h 55mBritish Airways

Deal found 4/29

$589

mié. 8/278:20 pmOPO - IAD

1 stop24h 35mBritish Airways

Deal found 4/29

$589

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

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

dom. 6/8

11:20 am-10:19 am

1 stop27h 59m

Washington, D.C. Reagan-National

dom. 6/22

9:33 am-6:55 am

1 stop16h 22m

$543

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

jue. 6/12

12:10 pm-11:14 am

1 stop28h 04m

Washington, D.C. Dulles Intl

mié. 6/25

9:00 am-7:05 am

1 stop17h 05m

$543

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

dom. 6/8

6:20 pm-3:35 pm

1 stop26h 15m

Washington, D.C. Dulles Intl

sáb. 6/21

5:25 pm-5:40 pm

1 stop19h 15m

$557

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

mié. 10/8

6:00 am-9:51 pm

2 stops20h 51m

Washington, D.C. Reagan-National

mar. 10/21

11:00 am-11:30 am

2 stops19h 30m

$560

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

dom. 6/8

9:25 pm-5:35 pm

1 stop25h 10m

Washington, D.C. Dulles Intl

dom. 6/22

10:40 pm-8:20 pm

1 stop16h 40m

$561

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

dom. 6/8

8:15 am-7:50 am

2 stops28h 35m

Washington, D.C. Reagan-National

dom. 6/22

6:59 pm-8:20 pm

2 stops20h 21m

$564

PortoBaltimore

OPO - BWI

OPOBWI

Porto

dom. 6/8

9:25 pm-7:35 pm

1 stop27h 10m

Baltimore/Washington

sáb. 6/21

9:20 pm-10:50 am

1 stop32h 30m

$595

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

dom. 6/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

sáb. 6/21

12:13 pm-10:40 am

2 stops17h 27m

$607

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

dom. 6/8

6:15 am-1:30 pm

2 stops36h 15m

Washington, D.C. Dulles Intl

dom. 6/22

10:20 pm-9:00 pm

1 stop17h 40m

$610

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

mié. 8/20

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

mié. 10/1

4:35 pm-3:55 pm

1 stop18h 20m

$638

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 50 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 April.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Porto-Washington, D.C. flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for 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 Emirates, Delta and KLM from Porto to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Emirates

8.0

Very good

3,213 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

3,213 reviews

Emirates

8.0

Very good

3,213 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

Delta

8.0

Very good

7,929 reviews

Emirates

8.0

Very good

3,213 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

KLM

7.8

Good

1,334 reviews

Emirates

8.0

Very good

3,213 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jun 2024

DXB - IAH

SWISS

7.5

Good

1,588 reviews

Emirates

8.0

Very good

3,213 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

3,213 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.?
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, United Airlines ($543), KLM ($557), and Air Canada ($560) offers the cheapest pricing from Porto to Washington, D.C.. You may be able to fly from Porto to Washington, D.C. for 25% 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 $384 on Royal Air Maroc. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $418 and PLAY from $474 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. Reagan-National, Porto - Washington, D.C. Dulles Intl 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 $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

Alexandria

Arlington

Woodbridge

Tysons

Fairfax

Springfield

Rockville

Fredericksburg

Silver Spring

Gaithersburg

Linthicum Heights

Falls Church

Laurel

Easton

Towson

Herndon

Bowie

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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$353+ 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 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 Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

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

Most accurate provider

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 abril 29, 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 abril 29, 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 April.

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.

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?

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 abril 29, 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 Emirates, Delta and KLM 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 abril 29, 2025.