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Reagan-National

$366+ Cheap flights from Porto (OPO) to Reagan-National (DCA)

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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — DCA
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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Cheap flight deals from Porto to Reagan-National

Cheapest flights from Porto to Reagan-National
Explore the most affordable flight options available from Porto to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.

This Air Canada deal was found by Cheapflights users on 2/8. 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.
Wed 2/256:00 am
OPO
-
DCA
2 stops21h 35m
Air Canada
Wed 3/1811:05 am
DCA
-
OPO
2 stops20h 10m
Air Canada
Deal found 2/8$607
This Trip.com deal was found by Cheapflights users on 2/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:15 am
OPO
-
DCA
2 stops20h 41m
Air Canada
Sun 6/712:45 pm
DCA
-
OPO
2 stops13h 05m
Air Canada
Deal found 2/7$615
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Mon 2/2312:35 pm
OPO
-
DCA
1 stop14h 24m
United Airlines
Sun 3/86:00 pm
DCA
-
OPO
1 stop11h 30m
United Airlines
Deal found 2/6$623
This Air Canada deal was found by Cheapflights users on 2/5. 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.
Wed 4/156:00 am
OPO
-
DCA
2 stops21h 43m
Air Canada
Sun 4/196:00 am
DCA
-
OPO
2 stops31h 30m
Air Canada
Deal found 2/5$629
This American Airlines deal was found by Cheapflights users on 2/6. 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 3/18:20 am
OPO
-
DCA
2 stops15h 23m
American Airlines
Mon 3/161:48 pm
DCA
-
OPO
2 stops13h 52m
American Airlines
Deal found 2/6$640
This American Airlines deal was found by Cheapflights users on 2/6. 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.
Mon 6/158:20 am
OPO
-
DCA
2 stops28h 26m
American Airlines
Sun 7/191:24 pm
DCA
-
OPO
2 stops17h 21m
American Airlines
Deal found 2/6$641

Find flight deals from Porto to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Reagan-National (DCA). 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 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$607
(Air Canada)

One-way from

$366
(American Airlines)

Popular in

August

Cheapest in

June
Provider with most accurate pricing for Porto-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Porto-Washington, D.C. (WAS) flights.
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From Porto to Washington, D.C. Reagan-National
Search Deals
One-way flight from Porto to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to Reagan-National 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 8, 2026.
Use the filters below to find and compare flights from Porto to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Porto

Fly to

Reagan-National

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 3/2

6:15 am-9:56 pm

2 stops20h 41m

Washington, D.C. Reagan-National

Sun 6/7

12:45 pm-6:50 am

2 stops13h 05m

$615

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 2/23

12:35 pm-9:59 pm

1 stop14h 24m

Washington, D.C. Reagan-National

Sun 3/8

6:00 pm-9:30 am

1 stop11h 30m

$623

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sun 3/1

12:35 pm-9:59 pm

1 stop14h 24m

Washington, D.C. Reagan-National

Mon 3/16

6:00 pm-9:30 am

1 stop11h 30m

$623

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Tue 2/24

11:25 am-10:57 pm

2 stops16h 32m

Washington, D.C. Reagan-National

Wed 3/18

12:16 pm-10:30 am

2 stops18h 14m

$625

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 3/2

5:00 am-4:27 pm

2 stops16h 27m

Washington, D.C. Reagan-National

Sat 5/9

6:25 pm-3:25 pm

2 stops16h 00m

$625

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 4/15

6:00 am-10:43 pm

2 stops21h 43m

Washington, D.C. Reagan-National

Sun 4/19

6:00 am-6:30 pm

2 stops31h 30m

$629

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sun 3/1

8:20 am-6:43 pm

2 stops15h 23m

Washington, D.C. Reagan-National

Mon 3/16

1:48 pm-7:40 am

2 stops13h 52m

$640

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 6/15

8:20 am-7:46 am

2 stops28h 26m

Washington, D.C. Reagan-National

Sun 7/19

1:24 pm-11:45 am

2 stops17h 21m

$641

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 2/25

8:20 am-6:48 pm

2 stops15h 28m

Washington, D.C. Reagan-National

Thu 3/19

6:14 pm-11:45 am

2 stops13h 31m

$641

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 5/28

12:25 pm-11:10 pm

2 stops15h 45m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 17 results
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Best time to book a flight from Porto to Reagan-National

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

Related info for your journey

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

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to Washington, D.C. Reagan-National. 0 airlines have flights from Porto to Washington, D.C. Reagan-National on a regular basis. Booking flights from Porto to Washington, D.C. Reagan-National should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Reagan-National per day.

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

    Departing from Porto to Washington, D.C. Reagan-National Airport will take you 14h 24m. The distance from Porto to Washington, D.C. Reagan-National Airport is about 3520 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto to Reagan-National 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 Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Laurel
Linthicum Heights
Rockville
Upper Marlboro
Manassas
Bowie
Largo
McLean
Clinton
Towson

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