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$430+ 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — OPO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$668
(Air Canada)

One-way from

$430
(KAYAK)

Popular in

December

Cheapest in

January

Average price

$1,087
From Washington, D.C. Reagan-National to Porto
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One-way flight from Washington, D.C. Reagan-National to Porto
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High demand for flights, 15% potential price rise
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Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/158:40 pmDCA - OPO
2 stops31h 40mAir Canada
Tue 7/2212:50 pmOPO - DCA
2 stops25h 07mAir Canada
Deal found 6/11$668
This United Airlines deal was found by Cheapflights users on 6/9. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:30 amDCA - OPO
2 stops24h 10mUnited Airlines
Sun 11/3012:40 pmOPO - DCA
2 stops34h 27mUnited Airlines
Deal found 6/9$671
This Iberia deal was found by Cheapflights users on 6/12. 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.
Tue 9/163:35 pmDCA - OPO
2 stops35h 00mIberia
Wed 9/248:15 amOPO - DCA
2 stops19h 52mIberia
Deal found 6/12$673
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/202:54 pmDCA - OPO
2 stops15h 46mAmerican Airlines
Tue 7/2912:20 pmOPO - DCA
2 stops15h 51mAmerican Airlines
Deal found 6/11$683
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/144:51 pmDCA - OPO
2 stops17h 39mDelta
Tue 7/229:20 amOPO - DCA
2 stops18h 39mDelta
Deal found 6/10$701
This Gurufare deal was found by Cheapflights users on 6/12. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:35 pmDCA - OPO
2 stops22h 55mBritish Airways
Mon 9/229:10 pmOPO - DCA
2 stops30h 57mBritish Airways
Deal found 6/12$711
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Wed 7/99:40 amDCA - OPO
3 stops19h 20mMultiple Airlines
Wed 7/167:15 amOPO - DCA
2 stops15h 47mMultiple Airlines
Deal found 6/11$739
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/222:59 pmDCA - OPO
1 stop14h 46mTAP AIR PORTUGAL
Fri 10/319:00 amOPO - DCA
2 stops14h 18mTAP AIR PORTUGAL
Deal found 6/11$950

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 June 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

Tue 7/15

8:40 pm-9:20 am

2 stops31h 40m

Porto

Tue 7/22

12:50 pm-8:57 am

2 stops25h 07m

$668

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 11/26

6:30 am-11:40 am

2 stops24h 10m

Porto

Sun 11/30

12:40 pm-6:07 pm

2 stops34h 27m

$671

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 9/16

3:35 pm-7:35 am

2 stops35h 00m

Porto

Wed 9/24

8:15 am-11:07 pm

2 stops19h 52m

$673

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 7/20

2:54 pm-11:40 am

2 stops15h 46m

Porto

Tue 7/29

12:20 pm-11:11 pm

2 stops15h 51m

$683

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 7/14

12:10 pm-8:25 am

2 stops15h 15m

Porto

Thu 7/24

9:20 am-11:53 pm

2 stops19h 33m

$701

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 9/16

3:35 pm-7:30 pm

2 stops22h 55m

Porto

Mon 9/22

9:10 pm-11:07 pm

2 stops30h 57m

$711

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 7/9

9:40 am-10:00 am

3 stops19h 20m

Porto

Wed 7/16

7:15 am-6:02 pm

2 stops15h 47m

$739

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 10/22

2:59 pm-10:45 am

1 stop14h 46m

Porto

Fri 10/31

9:00 am-7:18 pm

2 stops14h 18m

$950

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Thu 10/23

6:05 am-5:05 pm

2 stops30h 00m

$430

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 7/27

11:00 am-10:00 am

3 stops18h 00m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 18 results
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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 June 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 40% on airfare.

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 June 12, 2025.
To help decide which airline to fly from Washington, D.C. to Porto, see what other customers have to say about Delta, KLM and United Airlines. 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
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Scandinavian Airlines
7.3
Good
1,387 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines flying 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 Air Canada. Our recent data shows that you can find tickets from as low as $668 on this airline. Additional options worth looking into are United Airlines and Iberia, starting at $671 and $673 round-trip. Users have found that Air Canada is 23% cheaper than the other options available to this destination.

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

    $430 is the cheapest one-way deal found within the past few days, from Scandinavian Airlines. You may also be able to find cheap deals on United Airlines and Iberia, with prices starting from $469 and $482, respectively.

  • 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.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Porto?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Porto (average of $523). Flying from Washington, D.C. Reagan-National Airport to Porto in June is currently the most expensive (average of $1,047). 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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$520Average$826FlexibilityNo cancel feeOn-time69%

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