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

Currently, February is the cheapest month in which you can book a flight from Porto to Washington, D.C. Reagan-National Airport (average of $278). Flying from Porto to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest month to fly from Porto to Washington, D.C. Reagan-National Airport?

The best pricing can be found in the month of May. Prices to Washington, D.C. Reagan-National Airport from Porto average $668. You can even find prices in May for less than $668, as users have found deals to Washington, D.C. Reagan-National Airport from as low as $544. The month of September appears to be one of the more expensive times to travel to Washington, D.C. Reagan-National Airport from Porto. Flying in the targeted month can save you up to 22%.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto to Washington, D.C. Reagan-National Airport as you normally would.

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.

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.

$549+ Flights from Porto to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Porto to Reagan-National

Round-trip from	$582 (Gotogate)
One-way from	$549 (Thrive Travel)
Popular in	September
Cheapest in	May
Average price	$646

From Porto to Washington, D.C. Reagan-National

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One-way flight from Porto to Washington, D.C. Reagan-National

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Highest demand for flights based on searches. 5% potential increase in price ($36 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find 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 August 16, 2025.

Sun 9/1411:20 amOPO - DCA

1 stop28h 00mAir Canada

Mon 9/2912:55 pmDCA - OPO

2 stops15h 40mAir Canada

Deal found 8/14

$582

Sun 9/1411:20 amOPO - DCA

1 stop28h 00mUnited Airlines

Mon 9/297:15 pmDCA - OPO

1 stop9h 30mUnited Airlines

Deal found 8/14

$588

Thu 9/1112:10 pmOPO - DCA

1 stop32h 41mAir Canada

Sat 9/274:35 pmDCA - OPO

1 stop12h 00mAir Canada

Deal found 8/14

$591

Wed 10/811:35 amOPO - DCA

2 stops15h 32mDelta

Tue 10/215:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 8/15

$603

Sat 10/46:05 amOPO - DCA

2 stops18h 39mDelta

Sat 10/115:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 8/14

$605

Thu 9/116:30 amOPO - DCA

2 stops18h 14mDelta

Sat 9/275:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 8/14

$610

Wed 12/246:00 amOPO - DCA

2 stops16h 59mDelta

Sat 1/35:05 pmDCA - OPO

2 stops17h 20mDelta

Deal found 8/15

$625

Wed 12/2412:25 pmOPO - DCA

2 stops15h 15mAmerican Airlines

Sat 1/310:40 amDCA - OPO

2 stops16h 00mAmerican Airlines

Deal found 8/14

$718

Fri 10/1012:20 pmOPO - DCA

2 stops15h 37mBritish Airways

Thu 10/235:30 pmDCA - OPO

2 stops13h 10mBritish Airways

Deal found 8/15

$759

Sat 10/412:05 pmOPO - DCA

2 stops25h 53mUnited Airlines

Sat 10/117:29 pmDCA - OPO

1 stop9h 16mUnited Airlines

Deal found 8/14

$848

Best flights from Porto to Reagan-National
Discover carefully curated flight deals from Porto to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2025.

Sun 9/1411:20 amOPO - DCA

1 stop28h 00mAir Canada

Mon 9/2912:55 pmDCA - OPO

2 stops15h 40mAir Canada

Deal found 8/14

$582

Sun 9/1411:20 amOPO - DCA

1 stop28h 00mUnited Airlines

Mon 9/297:15 pmDCA - OPO

1 stop9h 30mUnited Airlines

Deal found 8/14

$588

Wed 10/811:35 amOPO - DCA

2 stops15h 32mDelta

Tue 10/215:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 8/15

$603

Wed 12/2412:25 pmOPO - DCA

2 stops15h 15mAmerican Airlines

Sat 1/310:40 amDCA - OPO

2 stops16h 00mAmerican Airlines

Deal found 8/14

$718

Fri 10/1012:20 pmOPO - DCA

2 stops15h 37mBritish Airways

Thu 10/235:30 pmDCA - OPO

2 stops13h 10mBritish Airways

Deal found 8/15

$759

Thu 9/1112:10 pmOPO - DCA

1 stop32h 41mAir Canada

Sat 9/274:35 pmDCA - OPO

1 stop12h 00mAir Canada

Deal found 8/14

$591

Sat 10/46:05 amOPO - DCA

2 stops18h 39mDelta

Sat 10/115:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 8/14

$605

Thu 9/116:30 amOPO - DCA

2 stops18h 14mDelta

Sat 9/275:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 8/14

$610

Wed 12/246:00 amOPO - DCA

2 stops16h 59mDelta

Sat 1/35:05 pmDCA - OPO

2 stops17h 20mDelta

Deal found 8/15

$625

Last-minute flights from Porto to Reagan-National
Discover last-minute flight deals from Porto to Reagan-National. Data last updated August 16, 2025 and is based on user searches.

Thu 9/1112:10 pmOPO - DCA

1 stop32h 41mAir Canada

Sat 9/274:35 pmDCA - OPO

1 stop12h 00mAir Canada

Deal found 8/14

$591

Thu 9/116:30 amOPO - DCA

2 stops18h 14mDelta

Sat 9/275:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 8/14

$610

Sun 9/1411:20 amOPO - DCA

1 stop28h 00mAir Canada

Mon 9/2912:55 pmDCA - OPO

2 stops15h 40mAir Canada

Deal found 8/14

$582

Sun 9/1411:20 amOPO - DCA

1 stop28h 00mUnited Airlines

Mon 9/297:15 pmDCA - OPO

1 stop9h 30mUnited Airlines

Deal found 8/14

$588

One-way flights from Porto to Reagan-National
Search for one-way flight options from Porto to Reagan-National. Find affordable one-way fares based on user searches. Data last updated August 16, 2025.

Thu 1/86:00 amOPO - DCA

2 stops18h 33mMultiple Airlines

Deal found 8/15

$549

Thu 10/28:15 amOPO - DCA

2 stops18h 04mBritish Airways

Deal found 8/14

$553

Wed 1/78:40 pmOPO - DCA

2 stops30h 59mIberia

Deal found 8/15

$578

Sat 10/259:50 pmOPO - DCA

3 stops43h 14mMultiple Airlines

Deal found 8/15

$616

Mon 1/56:30 amOPO - DCA

2 stops21h 38mDelta

Deal found 8/15

$623

Tue 8/268:35 pmOPO - DCA

2 stops31h 43mIberia

Deal found 8/14

$640

Sat 8/238:55 amOPO - DCA

1 stop16h 40mMultiple Airlines

Deal found 8/15

$701

Mon 8/2512:20 pmOPO - DCA

2 stops36h 56mAmerican Airlines

Deal found 8/15

$771

Thu 8/218:35 pmOPO - DCA

2 stops27h 31mIberia

Deal found 8/14

$775

Tue 8/2612:50 pmOPO - DCA

2 stops28h 32mUnited Airlines

Deal found 8/15

$803

Tue 8/2612:50 pmOPO - DCA

1 stop26h 28mAir Canada

Deal found 8/14

$812

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sun 9/14

11:20 am-10:20 am

1 stop28h 00m

Washington, D.C. Reagan-National

Mon 9/29

12:55 pm-9:35 am

2 stops15h 40m

$582

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sun 9/14

11:20 am-10:20 am

1 stop28h 00m

Washington, D.C. Reagan-National

Mon 9/29

7:15 pm-9:45 am

1 stop9h 30m

$588

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 9/11

12:10 pm-3:51 pm

1 stop32h 41m

Washington, D.C. Reagan-National

Sat 9/27

4:35 pm-9:35 am

1 stop12h 00m

$591

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 10/8

11:35 am-10:07 pm

2 stops15h 32m

Washington, D.C. Reagan-National

Tue 10/21

5:00 pm-3:30 pm

2 stops17h 30m

$603

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sat 10/4

6:05 am-7:44 pm

2 stops18h 39m

Washington, D.C. Reagan-National

Sat 10/11

5:00 pm-3:30 pm

2 stops17h 30m

$605

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 9/11

6:30 am-7:44 pm

2 stops18h 14m

Washington, D.C. Reagan-National

Sat 9/27

5:00 pm-3:30 pm

2 stops17h 30m

$610

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 12/24

6:00 am-5:59 pm

2 stops16h 59m

Washington, D.C. Reagan-National

Sat 1/3

5:05 pm-3:25 pm

2 stops17h 20m

$625

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 12/24

12:25 pm-10:40 pm

2 stops15h 15m

Washington, D.C. Reagan-National

Sat 1/3

10:40 am-7:40 am

2 stops16h 00m

$718

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Fri 10/10

12:20 pm-10:57 pm

2 stops15h 37m

Washington, D.C. Reagan-National

Thu 10/23

5:30 pm-11:40 am

2 stops13h 10m

$759

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 1/8

6:00 am-7:33 pm

2 stops18h 33m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 19 results

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

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.
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.
What is the cheapest month to book a flight from Porto to Washington, D.C. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Porto to Washington, D.C. Reagan-National Airport (average of $278). Flying from Porto to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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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$549+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Porto to Reagan-National with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Porto to Reagan-National

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Porto to Reagan-National

Cheapest flights from Porto to Reagan-NationalExplore 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 August 16, 2025.

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 August 16, 2025.

Cheapflights Fare Finder

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

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.

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?

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

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

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

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

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

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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 August 16, 2025.