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$444+ Cheap flights from Reagan-National (DCA) 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — OPO
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap flight deals from Reagan-National to Porto

Cheapest flights from Reagan-National to Porto
Explore the most affordable flight options available from Reagan-National to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This oojo deal was found by Cheapflights users on 12/10. 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.
mar. 12/301:44 pmDCA - OPO
2 stops23h 01mBritish Airways
mié. 1/76:35 pmOPO - DCA
2 stops27h 15mBritish Airways
Deal found 12/10$785
This CheapOair deal was found by Cheapflights users on 12/10. 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.
jue. 12/113:54 pmDCA - OPO
2 stops20h 21mBritish Airways
jue. 12/188:20 amOPO - DCA
2 stops18h 40mBritish Airways
Deal found 12/10$880
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/126:30 pmDCA - OPO
2 stops32h 10mIberia
vie. 12/1912:25 pmOPO - DCA
2 stops35h 33mIberia
Deal found 12/11$941
This Iberia deal was found by Cheapflights users on 12/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/132:02 pmDCA - OPO
2 stops12h 38mIberia
lun. 2/28:20 amOPO - DCA
2 stops15h 36mIberia
Deal found 12/11$977
This CheapOair deal was found by Cheapflights users on 12/10. 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.
jue. 12/113:54 pmDCA - OPO
2 stops20h 21mBritish Airways
mié. 12/1712:25 pmOPO - DCA
2 stops36h 51mBritish Airways
Deal found 12/10$1,017
This oojo deal was found by Cheapflights users on 12/10. 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.
sáb. 12/137:55 pmDCA - OPO
2 stops34h 55mMultiple Airlines
lun. 2/212:40 pmOPO - DCA
2 stops24h 56mMultiple Airlines
Deal found 12/10$1,026
This oojo deal was found by Cheapflights users on 12/10. 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.
mar. 12/308:10 pmDCA - OPO
2 stops17h 45mTAP AIR PORTUGAL
mié. 1/76:35 pmOPO - DCA
1 stop29h 57mTAP AIR PORTUGAL
Deal found 12/10$1,272
This CheapOair deal was found by Cheapflights users on 12/10. 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.
mié. 12/178:19 amDCA - OPO
2 stops27h 26mBritish Airways
mié. 12/246:35 pmOPO - DCA
2 stops31h 55mBritish Airways
Deal found 12/10$1,365
This Mytrip deal was found by Cheapflights users on 12/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/116:59 amDCA - OPO
3 stops34h 21mMultiple Airlines
mié. 12/1712:40 pmOPO - DCA
3 stops34h 25mMultiple Airlines
Deal found 12/10$1,417
This Mytrip deal was found by Cheapflights users on 12/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/124:10 pmDCA - OPO
2 stops18h 05mMultiple Airlines
vie. 12/198:05 pmOPO - DCA
3 stops28h 40mMultiple Airlines
Deal found 12/11$1,445

Find flight deals from Reagan-National to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 diciembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$471
(Mytrip)

One-way from

$444
(oojo)

Popular in

June

Cheapest in

October

Average price

$832
Provider with most accurate pricing for Washington, D.C. Reagan-National-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Porto flights.
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From Washington, D.C. Reagan-National to Porto
Search Deals
One-way flight from Washington, D.C. Reagan-National to Porto
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($126 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 diciembre 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Porto that are best for you.

Fly from

Reagan-National

Fly to

Porto

Route

Depart

Return

Price

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 3/24

8:10 pm-9:30 am

1 stop9h 20m

Porto

mar. 3/31

6:00 am-7:46 pm

2 stops18h 46m

$486

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 3/24

4:15 pm-12:05 pm

2 stops15h 50m

Porto

mar. 3/31

6:00 am-7:53 pm

2 stops18h 53m

$489

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 1/12

1:45 pm-3:25 pm

2 stops20h 40m

Porto

lun. 1/26

11:15 am-4:19 pm

2 stops34h 04m

$489

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 2/24

12:59 pm-10:30 am

2 stops16h 31m

Porto

mar. 3/3

5:00 am-4:27 pm

2 stops16h 27m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 1/19

10:25 am-10:30 am

2 stops19h 05m

Porto

lun. 1/26

11:15 am-4:29 pm

2 stops34h 14m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 2/24

4:10 pm-9:30 am

1 stop12h 20m

Porto

mar. 3/3

12:35 pm-7:35 pm

1 stop12h 00m

$495

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mié. 1/14

8:25 am-11:40 am

3 stops22h 15m

Porto

jue. 1/22

6:00 am-8:55 am

2 stops31h 55m

$502

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 3/24

11:05 am-11:15 am

2 stops20h 10m

Porto

lun. 3/30

4:35 pm-7:53 pm

2 stops32h 18m

$511

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

jue. 3/19

8:10 pm-9:30 am

1 stop9h 20m

Porto

jue. 3/26

6:00 am-6:05 pm

2 stops40h 05m

$532

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

vie. 3/6

4:59 pm-11:50 am

2 stops13h 51m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 18 results
1
2

Compare providers for flights from Reagan-National 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 Reagan-National to Porto in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust 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. Reagan-National Airport-Porto flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Reagan-National Airport-Porto flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Porto 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 Washington, D.C. Reagan-National Airport-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 Reagan-National to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Reagan-National 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. Reagan-National Airport to Porto

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

Find hourly flight availability from Reagan-National 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 diciembre 12, 2025.

One of the essential ways to save on airfare from Washington, D.C. Reagan-National Airport to Porto is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 39% on airfare.

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 diciembre 12, 2025.
Peruse reviews from past customers who have flown with United Airlines from Washington, D.C. Reagan-National Airport to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

    If you book a flight to Porto from Washington, D.C. Reagan-National, you will be flying to Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Washington, D.C. Reagan-National to Porto per day from 1 airline.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Porto?

    There are many flights that can get you from Washington, D.C. Reagan-National Airport to Porto in 9h 20m. Fly via United Airlines, Air Canada, or Delta to get the fastest option. Airlines will cover a distance of 3520 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Porto round-trip?

    Our cheapest airline available from Washington, D.C. Reagan-National Airport to Porto is United Airlines. Our recent data shows that you can find tickets from as low as $520 on this airline.

  • Can I find deals for flights from Reagan-National to Porto that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Porto?

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

  • Can I find deals for business class flights from Reagan-National to Porto?

    Yes. Cheapflights offers flight deals from Reagan-National 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.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra
Vila Nova de Gaia

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Top airline flying from Reagan-National to Porto

Discover the top airline that operate flights from Reagan-National 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 diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$520Average$1,087FlexibilityNo cancel feeOn-time69%

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