Porto

$260+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — OPO
Feb 27 — Mar 61
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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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$559
(Delta)

One-way from

$260
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$590
Provider with most accurate pricing for Washington, D.C. (WAS)-Porto flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Porto flights.
From Washington, D.C. (WAS) to Porto
One-way flight from Washington, D.C. (WAS) to Porto
Highest demand for flights based on searches. 22% potential increase in price ($198 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Average for round-trip flights in February 2025

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 February 22, 2025.

This Delta deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/210:59 amBWI - OPO
2 stops18h 41mDelta
Wed 4/96:20 amOPO - BWI
2 stops17h 27mDelta
Deal found 2/22$559
This United deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/235:39 pmBWI - OPO
2 stops37h 36mMultiple Airlines
Mon 3/316:00 amOPO - BWI
2 stops44h 42mMultiple Airlines
Deal found 2/22$573
This CheapOair deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/303:42 pmIAD - OPO
2 stops18h 58mMultiple Airlines
Mon 4/72:35 pmOPO - IAD
2 stops30h 40mMultiple Airlines
Deal found 2/21$577
This KLM deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/96:35 pmIAD - OPO
1 stop12h 50mKLM
Sat 3/159:25 amOPO - IAD
1 stop35h 20mKLM
Deal found 2/21$581
This Justfly.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/178:24 amIAD - OPO
2 stops22h 51mAir Canada
Sun 3/236:00 amOPO - IAD
2 stops36h 01mAir Canada
Deal found 2/20$585
This CheapOair deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/176:00 amDCA - OPO
2 stops25h 15mMultiple Airlines
Sun 3/236:00 amOPO - DCA
2 stops30h 57mMultiple Airlines
Deal found 2/22$585
This SWISS deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/229:45 pmIAD - OPO
1 stop16h 50mSWISS
Mon 3/3112:50 pmOPO - IAD
1 stop32h 25mSWISS
Deal found 2/21$587
This Air Canada deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/174:10 pmDCA - OPO
2 stops16h 40mAir Canada
Sun 3/236:00 amOPO - DCA
2 stops30h 57mAir Canada
Deal found 2/21$587
This United deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/206:50 pmIAD - OPO
1 stop12h 45mUnited Airlines
Thu 3/276:00 amOPO - IAD
2 stops38h 17mUnited Airlines
Deal found 2/21$589
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:30 pmIAD - OPO
1 stop13h 30mTAP AIR PORTUGAL
Mon 11/106:00 pmOPO - IAD
1 stop26h 15mTAP AIR PORTUGAL
Deal found 2/22$600
This oojo deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2312:30 pmIAD - OPO
1 stop16h 20mTurkish Airlines
Thu 5/224:50 pmOPO - IAD
1 stop22h 55mTurkish Airlines
Deal found 2/21$616
This American Airlines deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:02 amDCA - OPO
2 stops15h 38mAmerican Airlines
Wed 11/1212:25 pmOPO - DCA
2 stops15h 08mAmerican Airlines
Deal found 2/22$643

Find flights from Washington, D.C. to Porto within your budget

Customize your flight search to find flights from Washington, D.C. to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.

Fly from

Washington, D.C.

Fly to

Porto

Route

Depart

Return

Price

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 4/2

10:59 am-10:40 am

2 stops18h 41m

Porto

Wed 4/9

6:20 am-6:47 pm

2 stops17h 27m

$559

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 3/23

5:39 pm-11:15 am

2 stops37h 36m

Porto

Mon 3/31

6:00 am-9:42 pm

2 stops44h 42m

$573

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 3/17

8:24 am-11:15 am

2 stops22h 51m

Porto

Sun 3/23

6:00 am-2:01 pm

2 stops36h 01m

$585

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 3/16

4:10 pm-11:15 am

2 stops39h 05m

Porto

Sun 3/23

6:00 am-6:07 pm

2 stops40h 07m

$585

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sat 3/22

9:45 pm-11:15 am

1 stop33h 30m

Porto

Mon 3/31

7:20 pm-4:15 pm

1 stop25h 55m

$587

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sat 3/22

3:55 pm-12:05 pm

2 stops16h 10m

Porto

Mon 3/31

12:15 pm-4:15 pm

1 stop33h 00m

$594

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 4/29

5:00 pm-10:00 am

1 stop12h 00m

Porto

Tue 5/6

7:00 am-3:20 pm

1 stop13h 20m

$605

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 3/30

12:35 pm-3:40 pm

2 stops22h 05m

Porto

Mon 4/7

6:00 am-11:59 pm

2 stops22h 59m

$610

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 4/2

4:10 pm-10:05 pm

3 stops24h 55m

Porto

Wed 4/9

7:15 am-9:08 pm

2 stops18h 53m

$612

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 4/23

12:30 pm-3:50 pm

1 stop22h 20m

Porto

Thu 5/8

10:50 am-10:45 am

1 stop28h 55m

$616

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 50 results
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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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Porto flight deals on Cheapflights vs. FlightHub >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 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 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.

Travel insights for flights from Washington, D.C. to Porto

Get recent, data-driven insights about flights from Washington, D.C. to Porto including ideal travel times, pricing trends, and more.

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 February 14, 2025.

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 $1,092). 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?

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 February 22, 2025.

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?

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.

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

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

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

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 February 22, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Porto, such as Delta, Porter Airlines and KLM. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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.

8.0
Very good
8.0
Very good

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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.

8.0
Very good

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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.

8.0
Very good

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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.

8.0
Very good

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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.

8.0
Very good

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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

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.?

    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 $559. Other airlines that can offer you cheap pricing are Air Canada, from $585, and SWISS, from $587. Delta is priced at 16% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $369. Royal Air Maroc flights start at $381 while deals on Delta start at $412 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?

    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 6.9 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 $18.

  • 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 $38 per day.

  • What are points of interest worth seeing during a layover in Amsterdam?

    If you're on a layover in Amsterdam and looking for things to do, consider visiting Anne Frank Huis, De Dam, or Van Gogh Museum. Anne Frank Huis, De Dam, and Van Gogh Museum are located about 6.8 mi, 7.0 mi, and 6.0 mi, respectively from Amsterdam Schiphol. Those looking to explore during their layover in Amsterdam can rent a car from Amsterdam Schiphol for about $34 per day.

  • 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?

    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 $1,092). 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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Top 8 airlines flying from Washington, D.C. to Porto

Discover the top 8 airlines that operate flights from Washington, D.C. to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$422Average$818FlexibilityNo cancel feeOn-time77%
DeltaCheapest$424Average$813FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$430Average$679FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$459Average$784FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$538Average$1,086FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$538Average$826FlexibilityNo cancel feeOn-time76%
IberiaCheapest$543Average$672FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$567Average$736FlexibilityNo cancel feeOn-time71%
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