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

Cheapflights users have booked flights from Washington, D.C. to Porto round-trip from $673. Other airlines that can offer you cheap pricing are TAP AIR PORTUGAL, from $678, and United Airlines, from $690.

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

To fly one-way, consider booking your trip with PLAY, which is currently one of the cheapest options available, starting at $394. TAP AIR PORTUGAL flights start at $445 while deals on WorldTicket start at $546 one-way.

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

The most popular flight routes from Washington, D.C. to Porto are Washington, D.C. Dulles Intl - Porto, Washington, D.C. Reagan-National - Porto and Baltimore/Washington - Porto.

What are the most popular airlines that fly from Washington, D.C. to Porto?

The most popular airlines flying from Washington, D.C. to Porto are American Airlines, Air France and Delta. Something to consider prior to booking your flight.

Where are the most common layover locations when flying from Washington, D.C. to Porto?

Washington, D.C. to Porto flights have a layover in Lisbon most often. Paris sees the next most layovers on Washington, D.C. to Porto flights.

Where are the least popular layover locations for Washington, D.C. to Porto flights?

Washington, D.C. to Porto flights that have layovers will least frequently stop in Amsterdam. Washington, D.C. to Porto flights stopping in Madrid are the next rarest.

What are some popular things to do or see while on a layover in Lisbon?

Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém are the most popular attractions in Lisbon if you're in need of something to do during your layover. Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém can be accessed by traveling approximately 4.5 mi, 3.6 mi, and 6.8 mi, respectively from Lisbon Humberto Delgado. Those on a layover in Lisbon in need of a rental car can book one at Lisbon Humberto Delgado for about $23.

What are some popular points of interest to see during a layover in Paris?

Most Paris visitors opt to spend their time at Eiffel Tower, Champs-Elysées, and Louvre Museum. Those on a layover in Paris interested in visiting Eiffel Tower, Champs-Elysées, or Louvre Museum can do so by traveling 15.8 mi, 14.7 mi, and 14.3 mi, respectively from Paris Charles de Gaulle. Those landing in Paris looking to spend some time exploring during their layover can rent a car for about $43 per day.

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

Thursday flights are found to be more expensive to fly from Washington, D.C. to Porto. 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 Porto.

How far in advance should I book a flight from Washington, D.C. to Porto?

Users have found that booking a flight from Washington, D.C. to Porto at least 28 days early can save you up to 62% on average compared to booking a flight this week. If booking 28 days before your flight isn’t an option for you, users have found flights from Washington, D.C. to Porto for as little as $625 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $825 for flights departing within the next 3 days.

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

The best pricing can be found in the month of November. Prices to Porto from Washington, D.C. average $673. You can even find prices in November for less than $673, as users have found deals to Porto from as low as $418. The month of June appears to be one of the more expensive times to travel to Porto from Washington, D.C.. Flying in the targeted month can save you up to 30%.

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

Most trusted provider : When it comes to deals on Washington, D.C.-Porto flights, Cheapflights users trust AranGrant the most. AranGrant 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 Washington, D.C.-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Porto from Washington, D.C.?

Most people fly into Porto (OPO) if they book a flight to Porto from Washington, D.C.. On average, Porto has 0 inbound flights from Washington, D.C. per day from 8 airlines. Porto is conveniently located just 6.8 mi from Porto’s city center.

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

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

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

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

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

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

$255+ Flights from Washington, D.C. to Porto

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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”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Washington, D.C. to Porto are usually found in November or October, booked 74 days in advance, depart on a Sunday or Monday and return on a Thursday

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

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$673 (Gotogate)
One-way from	$354 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$708

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

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 21% potential increase in price ($179 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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

Cheapest flights from Washington, D.C. to Porto
Explore the most affordable flight options available from Washington, D.C. to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Wed 10/86:50 pmBWI - OPO

1 stop20h 30mPLAY

Sun 10/129:05 pmOPO - BWI

1 stop25h 35mPLAY

Deal found 4/22

$579

Thu 11/134:35 pmIAD - OPO

2 stops21h 05mAir Canada

Sun 11/166:00 amOPO - IAD

2 stops32h 51mAir Canada

Deal found 4/22

$648

Wed 10/223:30 pmDCA - OPO

2 stops14h 10mKLM

Fri 10/3111:15 amOPO - DCA

2 stops16h 14mKLM

Deal found 4/21

$651

Thu 11/134:35 pmIAD - OPO

2 stops21h 05mMultiple Airlines

Sun 11/166:15 amOPO - IAD

1 stop18h 50mMultiple Airlines

Deal found 4/22

$652

Mon 6/164:35 pmDCA - OPO

1 stop12h 00mAir Canada

Thu 6/2612:10 pmOPO - DCA

1 stop14h 38mAir Canada

Deal found 4/22

$673

Mon 11/310:20 pmIAD - OPO

2 stops19h 05mLufthansa

Mon 11/246:00 amOPO - IAD

2 stops19h 05mLufthansa

Deal found 4/22

$674

Tue 9/95:00 pmIAD - OPO

1 stop10h 00mTAP AIR PORTUGAL

Wed 9/179:00 amOPO - IAD

1 stop11h 20mTAP AIR PORTUGAL

Deal found 4/22

$676

Tue 5/69:40 amDCA - OPO

2 stops24h 20mMultiple Airlines

Tue 5/1310:50 pmOPO - DCA

2 stops24h 13mMultiple Airlines

Deal found 4/22

$683

Tue 7/810:15 pmIAD - OPO

2 stops30h 05mUnited Airlines

Tue 7/2212:50 pmOPO - IAD

2 stops28h 03mUnited Airlines

Deal found 4/22

$690

Mon 6/169:40 amDCA - OPO

1 stop18h 55mUnited Airlines

Tue 6/2412:50 pmOPO - DCA

2 stops29h 08mUnited Airlines

Deal found 4/21

$696

Wed 10/227:50 pmIAD - OPO

2 stops14h 45mDelta

Fri 10/3111:45 amOPO - IAD

2 stops15h 15mDelta

Deal found 4/22

$706

Sun 5/48:45 pmIAD - OPO

1 stop16h 30mSWISS

Mon 5/127:20 pmOPO - IAD

1 stop25h 55mSWISS

Deal found 4/21

$713

Best flights from Washington, D.C. to Porto
Discover carefully curated flight deals from Washington, D.C. to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2025.

Tue 5/68:45 pmIAD - OPO

1 stop30h 00mMultiple Airlines

Tue 5/136:00 amOPO - IAD

2 stops20h 08mMultiple Airlines

Deal found 4/22

$673

Mon 6/164:35 pmDCA - OPO

1 stop12h 00mAir Canada

Thu 6/2612:10 pmOPO - DCA

1 stop14h 38mAir Canada

Deal found 4/22

$673

Sun 7/1310:20 pmIAD - OPO

1 stop19h 40mTAP AIR PORTUGAL

Thu 7/1712:25 pmOPO - IAD

1 stop13h 25mTAP AIR PORTUGAL

Deal found 4/20

$678

Tue 7/85:25 pmIAD - OPO

1 stop11h 20mUnited Airlines

Tue 7/2212:50 pmOPO - IAD

2 stops28h 03mUnited Airlines

Deal found 4/22

$690

Tue 7/18:45 pmIAD - OPO

1 stop33h 40mSWISS

Tue 7/88:40 amOPO - IAD

1 stop12h 35mSWISS

Deal found 4/22

$722

Mon 7/76:30 pmIAD - OPO

1 stop16h 00mKLM

Tue 7/154:20 pmOPO - IAD

1 stop28h 15mKLM

Deal found 4/22

$726

Tue 5/66:50 pmBWI - OPO

2 stops15h 40mDelta

Tue 5/136:20 amOPO - BWI

2 stops19h 24mDelta

Deal found 4/22

$729

Mon 7/216:50 pmBWI - OPO

1 stop20h 15mPLAY

Sat 7/269:05 pmOPO - BWI

1 stop25h 35mPLAY

Deal found 4/22

$790

Tue 7/110:20 pmIAD - OPO

2 stops19h 30mLufthansa

Tue 7/86:15 amOPO - IAD

2 stops14h 35mLufthansa

Deal found 4/22

$797

Sun 4/2710:05 pmIAD - OPO

2 stops19h 10mScandinavian Airlines

Fri 11/145:45 pmOPO - IAD

1 stop28h 30mScandinavian Airlines

Deal found 4/21

$800

Wed 7/28:33 pmIAD - OPO

2 stops13h 57mAir France

Sat 7/129:20 amOPO - IAD

1 stop14h 55mAir France

Deal found 4/22

$806

Thu 6/55:00 pmDCA - OPO

2 stops13h 40mAmerican Airlines

Thu 6/1212:20 pmOPO - DCA

2 stops15h 47mAmerican Airlines

Deal found 4/22

$908

Last-minute flights from Washington, D.C. to Porto
Discover last-minute flight deals from Washington, D.C. to Porto. Data last updated April 22, 2025 and is based on user searches.

Sun 4/2710:20 pmIAD - OPO

1 stop12h 00mMultiple Airlines

Tue 5/610:50 pmOPO - IAD

2 stops25h 15mMultiple Airlines

Deal found 4/22

$769

Sun 4/2710:20 pmIAD - OPO

1 stop15h 40mTAP AIR PORTUGAL

Wed 5/77:00 amOPO - IAD

1 stop13h 20mTAP AIR PORTUGAL

Deal found 4/22

$839

Sun 4/2712:35 pmDCA - OPO

2 stops14h 00mIberia

Fri 11/148:20 amOPO - DCA

2 stops15h 55mIberia

Deal found 4/21

$882

Sun 4/2710:05 pmIAD - OPO

2 stops19h 10mScandinavian Airlines

Wed 5/712:15 pmOPO - IAD

1 stop12h 44mScandinavian Airlines

Deal found 4/22

$905

Mon 4/288:30 pmBWI - OPO

2 stops18h 45mMultiple Airlines

Thu 5/89:10 pmOPO - BWI

1 stop25h 30mMultiple Airlines

Deal found 4/22

$794

Mon 4/285:29 pmIAD - OPO

1 stop11h 16mUnited Airlines

Tue 5/136:00 amOPO - IAD

1 stop14h 50mUnited Airlines

Deal found 4/21

$852

Tue 4/298:45 pmIAD - OPO

1 stop33h 40mSWISS

Wed 5/1412:20 pmOPO - IAD

1 stop32h 55mSWISS

Deal found 4/21

$861

Tue 4/291:44 pmIAD - OPO

2 stops20h 46mDelta

Tue 5/611:25 amOPO - IAD

1 stop33h 10mDelta

Deal found 4/22

$869

Tue 4/291:12 pmDCA - OPO

2 stops17h 03mUnited Airlines

Thu 5/812:35 pmOPO - DCA

1 stop12h 06mUnited Airlines

Deal found 4/22

$877

Tue 4/295:40 pmBWI - OPO

2 stops16h 50mDelta

Fri 5/96:40 amOPO - BWI

2 stops17h 27mDelta

Deal found 4/22

$879

Tue 4/294:31 pmDCA - OPO

2 stops17h 59mDelta

Tue 5/611:25 amOPO - DCA

2 stops17h 19mDelta

Deal found 4/22

$879

Wed 4/3010:20 pmIAD - OPO

2 stops19h 25mLufthansa

Fri 5/911:05 amOPO - IAD

1 stop13h 20mLufthansa

Deal found 4/22

$898

One-way flights from Washington, D.C. to Porto
Search for one-way flight options from Washington, D.C. to Porto. Find affordable one-way fares based on user searches. Data last updated April 22, 2025.

Fri 7/1112:23 pmBWI - OPO

3 stops37h 52mMultiple Airlines

Deal found 4/21

$354

Mon 5/128:30 pmIAD - OPO

3 stops41h 15mMultiple Airlines

Deal found 4/20

$360

Fri 7/116:50 pmBWI - OPO

1 stop20h 15mPLAY

Deal found 4/21

$394

Mon 5/266:00 amDCA - OPO

3 stops28h 35mMultiple Airlines

Deal found 4/22

$420

Thu 7/1010:20 pmIAD - OPO

1 stop11h 40mTAP AIR PORTUGAL

Deal found 4/21

$445

Mon 6/166:50 pmBWI - OPO

1 stop20h 15mWorldTicket

Deal found 4/21

$546

Mon 6/1612:55 pmDCA - OPO

2 stops15h 40mAir Canada

Deal found 4/21

$549

Mon 6/309:45 amIAD - OPO

1 stop18h 50mAir Canada

Deal found 4/22

$553

Mon 6/164:00 pmIAD - OPO

2 stops12h 35mUnited Airlines

Deal found 4/21

$554

Tue 6/1711:19 amBWI - OPO

2 stops15h 26mUnited Airlines

Deal found 4/21

$554

Mon 6/301:00 pmDCA - OPO

2 stops15h 35mUnited Airlines

Deal found 4/22

$558

Mon 6/309:20 pmBWI - OPO

2 stops29h 15mBritish Airways

Deal found 4/22

$561

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 10/8

6:50 pm-8:20 pm

1 stop20h 30m

Porto

Sun 10/12

9:05 pm-5:40 pm

1 stop25h 35m

$579

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 5/6

8:45 pm-7:45 am

1 stop30h 00m

Porto

Tue 5/13

6:00 am-9:08 pm

2 stops20h 08m

$673

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 6/16

4:35 pm-9:35 am

1 stop12h 00m

Porto

Thu 6/26

12:10 pm-9:48 pm

1 stop14h 38m

$673

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 9/9

5:00 pm-8:00 am

1 stop10h 00m

Porto

Wed 9/17

9:00 am-3:20 pm

1 stop11h 20m

$676

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 5/6

9:40 am-3:00 pm

2 stops24h 20m

Porto

Tue 5/13

10:50 pm-6:03 pm

2 stops24h 13m

$683

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 7/8

5:25 pm-9:45 am

1 stop11h 20m

Porto

Tue 7/22

12:50 pm-11:53 am

2 stops28h 03m

$690

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 9/24

9:45 am-9:25 am

1 stop18h 40m

Porto

Tue 10/7

6:00 am-9:25 pm

2 stops20h 25m

$691

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 6/16

9:40 am-9:35 am

1 stop18h 55m

Porto

Tue 6/24

12:50 pm-12:58 pm

2 stops29h 08m

$696

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 5/4

8:45 pm-6:15 pm

1 stop16h 30m

Porto

Mon 5/12

7:20 pm-4:15 pm

1 stop25h 55m

$713

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 5/6

11:40 am-7:35 am

2 stops14h 55m

Porto

Tue 5/13

12:20 pm-10:36 pm

2 stops15h 16m

$717

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 51 results

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

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

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Expedia	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 Washington, D.C.-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Porto flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Porto flights, Cheapflights users trust AranGrant the most. AranGrant 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 Washington, D.C.-Porto 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 Washington, D.C. to Porto

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

How far ahead should I book a flight from Washington, D.C. to Porto?

The best time to book flights from Washington, D.C. to Porto is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Porto (average of $523). Flying from Washington, D.C. to Porto in June is currently the most expensive (average of $1,081). 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 WAS to OPO?

Unlike at noon, when flights are generally more expensive, you can save up to 17% on flights from Washington, D.C. to Porto by exploring options for tickets in the afternoon.

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

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

Rainfall in Porto by month

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Read through reviews of airlines operating flights from Washington, D.C. to Porto, such as Delta, KLM and SWISS. You can also see how each airline compares in terms of 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

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,331 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,582 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France

7.4

Good

1,441 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,683 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly into for flights to Porto from Washington, D.C.?
Most people fly into Porto (OPO) if they book a flight to Porto from Washington, D.C.. On average, Porto has 0 inbound flights from Washington, D.C. per day from 8 airlines. Porto is conveniently located just 6.8 mi from Porto’s city center.
What are the cheapest airlines flying from Washington, D.C. to Porto round-trip?
Cheapflights users have booked flights from Washington, D.C. to Porto round-trip from $673. Other airlines that can offer you cheap pricing are TAP AIR PORTUGAL, from $678, and United Airlines, from $690.
What are the cheapest airlines to fly from Washington, D.C. to Porto one-way?
To fly one-way, consider booking your trip with PLAY, which is currently one of the cheapest options available, starting at $394. TAP AIR PORTUGAL flights start at $445 while deals on WorldTicket start at $546 one-way.
What are the most popular routes from Washington, D.C. to Porto?
The most popular flight routes from Washington, D.C. to Porto are Washington, D.C. Dulles Intl - Porto, Washington, D.C. Reagan-National - Porto and Baltimore/Washington - Porto.
Where are the most common layover locations when flying from Washington, D.C. to Porto?
Washington, D.C. to Porto flights have a layover in Lisbon most often. Paris sees the next most layovers on Washington, D.C. to Porto flights.
What are some popular things to do or see while on a layover in Lisbon?
Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém are the most popular attractions in Lisbon if you're in need of something to do during your layover. Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém can be accessed by traveling approximately 4.5 mi, 3.6 mi, and 6.8 mi, respectively from Lisbon Humberto Delgado. Those on a layover in Lisbon in need of a rental car can book one at Lisbon Humberto Delgado for about $23.
What are some popular points of interest to see during a layover in Paris?
Most Paris visitors opt to spend their time at Eiffel Tower, Champs-Elysées, and Louvre Museum. Those on a layover in Paris interested in visiting Eiffel Tower, Champs-Elysées, or Louvre Museum can do so by traveling 15.8 mi, 14.7 mi, and 14.3 mi, respectively from Paris Charles de Gaulle. Those landing in Paris looking to spend some time exploring during their layover can rent a car for about $43 per day.
Where are the least popular layover locations for Washington, D.C. to Porto flights?
Washington, D.C. to Porto flights that have layovers will least frequently stop in Amsterdam. Washington, D.C. to Porto flights stopping in Madrid are the next rarest.
Can I find deals for flights from Washington, D.C. to Porto that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Porto.
Can I find deals for business class flights from Washington, D.C. to Porto?
Yes. Cheapflights offers flight deals from Washington, D.C. to Porto 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 Washington, D.C. to Porto?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Porto (average of $523). Flying from Washington, D.C. to Porto in June is currently the most expensive (average of $1,081). 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.

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Other flights to Porto

Top 8 airlines flying from Washington, D.C. to Porto

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest$422	Average$818	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$423	Average$753	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$435	Average$685	FlexibilityNo cancel fee	On-time75%
TAP AIR PORTUGAL	Cheapest$457	Average$750	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$538	Average$975	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$567	Average$828	FlexibilityNo cancel fee	On-time71%
Iberia	Cheapest$579	Average$798	FlexibilityNo cancel fee	On-time77%
Lufthansa	Cheapest$603	Average$754	FlexibilityNo cancel fee	On-time76%

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$255+ Cheap flights from Washington, D.C. (WAS) to Porto (OPO)

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Washington, D.C. to Porto are usually found in November or October, booked 74 days in advance, depart on a Sunday or Monday and return on a Thursday

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Cheapest flights from Washington, D.C. to PortoExplore the most affordable flight options available from Washington, D.C. to Porto. 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 Washington, D.C. to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

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

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 Washington, D.C. to Porto in April.

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

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

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

How far ahead should I book a flight from Washington, D.C. to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Porto. Price data was last updated on April 18, 2025.

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

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

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

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Porto. Price data was last updated on December 16, 2024.

Rainfall in Porto by month

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

Temperature in Porto by month

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

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated April 22, 2025.

Read through reviews of airlines operating flights from Washington, D.C. to Porto, such as Delta, KLM and SWISS. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

Where are the most common layover locations when flying from Washington, D.C. to Porto?

What are some popular things to do or see while on a layover in Lisbon?

What are some popular points of interest to see during a layover in Paris?

Where are the least popular layover locations for Washington, D.C. to Porto flights?

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

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

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

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

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Alternative routes for Washington, D.C. to Porto

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Top 8 airlines flying from Washington, D.C. to Porto

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Cheapest flights from Washington, D.C. to Porto
Explore the most affordable flight options available from Washington, D.C. to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.