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

To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $550. Iberia flights start at $555 while deals on American Airlines start at $556 one-way.

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 $719. You can even find prices in May for less than $719, as users have found deals to Washington, D.C. Reagan-National Airport from as low as $544. The month of June 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 42%.

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.

$459+ 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	$572 (United Airlines)
One-way from	$459 (Mytrip)
Popular in	June
Cheapest in	May
Average price	$822

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. 11% potential increase in price ($89 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 1, 2025.

Mon 9/86:00 amOPO - DCA

2 stops20h 03mUnited Airlines

Sun 9/144:12 pmDCA - OPO

1 stop9h 43mUnited Airlines

Deal found 6/29

$572

Mon 9/812:20 pmOPO - DCA

2 stops15h 47mAmerican Airlines

Sun 9/141:39 pmDCA - OPO

2 stops12h 56mAmerican Airlines

Deal found 6/29

$581

Thu 10/211:35 amOPO - DCA

2 stops17h 06mDelta

Sun 10/125:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 7/1

$606

Sun 9/288:15 amOPO - DCA

2 stops19h 52mIberia

Tue 10/1411:30 amDCA - OPO

2 stops15h 05mIberia

Deal found 7/1

$616

Tue 9/3011:35 amOPO - DCA

2 stops15h 36mKLM

Sun 10/123:30 pmDCA - OPO

2 stops14h 10mKLM

Deal found 7/1

$625

Thu 8/149:55 amOPO - DCA

2 stops26h 54mBritish Airways

Thu 8/212:54 pmDCA - OPO

2 stops24h 26mBritish Airways

Deal found 6/30

$706

Thu 7/1712:10 pmOPO - DCA

1 stop14h 38mAir Canada

Mon 7/2112:55 pmDCA - OPO

2 stops15h 40mAir Canada

Deal found 6/30

$713

Thu 8/214:00 pmOPO - DCA

3 stops32h 42mMultiple Airlines

Wed 9/312:55 pmDCA - OPO

2 stops15h 25mMultiple Airlines

Deal found 6/29

$969

Wed 10/86:10 pmOPO - DCA

1 stop18h 59mTAP AIR PORTUGAL

Tue 10/211:35 pmDCA - OPO

2 stops19h 30mTAP AIR PORTUGAL

Deal found 7/1

$1,155

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 July 1, 2025.

Mon 9/86:00 amOPO - DCA

2 stops20h 03mUnited Airlines

Sun 9/144:12 pmDCA - OPO

1 stop9h 43mUnited Airlines

Deal found 6/29

$572

Mon 9/812:20 pmOPO - DCA

2 stops15h 47mAmerican Airlines

Sun 9/141:39 pmDCA - OPO

2 stops12h 56mAmerican Airlines

Deal found 6/29

$581

Thu 10/211:35 amOPO - DCA

2 stops17h 06mDelta

Sun 10/125:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 7/1

$606

Sun 9/288:15 amOPO - DCA

2 stops19h 52mIberia

Tue 10/1411:30 amDCA - OPO

2 stops15h 05mIberia

Deal found 7/1

$616

Tue 9/3011:35 amOPO - DCA

2 stops15h 36mKLM

Sun 10/123:30 pmDCA - OPO

2 stops14h 10mKLM

Deal found 7/1

$625

Thu 8/149:55 amOPO - DCA

2 stops26h 54mBritish Airways

Thu 8/212:54 pmDCA - OPO

2 stops24h 26mBritish Airways

Deal found 6/30

$706

Thu 7/1712:10 pmOPO - DCA

1 stop14h 38mAir Canada

Mon 7/2112:55 pmDCA - OPO

2 stops15h 40mAir Canada

Deal found 6/30

$713

Thu 8/214:00 pmOPO - DCA

3 stops32h 42mMultiple Airlines

Wed 9/312:55 pmDCA - OPO

2 stops15h 25mMultiple Airlines

Deal found 6/29

$969

Wed 10/86:10 pmOPO - DCA

1 stop18h 59mTAP AIR PORTUGAL

Tue 10/211:35 pmDCA - OPO

2 stops19h 30mTAP AIR PORTUGAL

Deal found 7/1

$1,155

Last-minute flights from Porto to Reagan-National
Discover last-minute flight deals from Porto to Reagan-National. Data last updated July 1, 2025 and is based on user searches.

Thu 7/1712:10 pmOPO - DCA

1 stop14h 38mAir Canada

Mon 7/2112:55 pmDCA - OPO

2 stops15h 40mAir Canada

Deal found 6/30

$713

Thu 7/1712:20 pmOPO - DCA

2 stops15h 51mIberia

Mon 7/211:25 pmDCA - OPO

2 stops13h 10mIberia

Deal found 7/1

$922

Sun 7/278:15 amOPO - DCA

2 stops16h 10mAmerican Airlines

Sun 8/31:25 pmDCA - OPO

2 stops13h 10mAmerican Airlines

Deal found 6/29

$889

Thu 8/149:55 amOPO - DCA

2 stops26h 54mBritish Airways

Thu 8/212:54 pmDCA - OPO

2 stops24h 26mBritish Airways

Deal found 6/30

$706

Thu 8/219:50 amOPO - DCA

1 stop11h 31mUnited Airlines

Wed 9/33:00 pmDCA - OPO

1 stop10h 05mUnited Airlines

Deal found 6/29

$647

Thu 8/214:00 pmOPO - DCA

3 stops32h 42mMultiple Airlines

Wed 9/312:55 pmDCA - OPO

2 stops15h 25mMultiple Airlines

Deal found 6/29

$969

Mon 8/2511:30 amOPO - DCA

2 stops17h 11mDelta

Sun 9/74:45 pmDCA - OPO

2 stops17h 50mDelta

Deal found 7/1

$629

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 July 1, 2025.

Tue 7/88:30 amOPO - DCA

3 stops32h 33mMultiple Airlines

Deal found 7/1

$459

Fri 10/1711:15 amOPO - DCA

2 stops16h 42mBritish Airways

Deal found 6/29

$550

Tue 9/238:15 amOPO - DCA

2 stops19h 52mIberia

Deal found 6/30

$555

Sat 9/2012:20 pmOPO - DCA

2 stops26h 41mAmerican Airlines

Deal found 6/30

$556

Sun 9/711:20 amOPO - DCA

1 stop28h 00mUnited Airlines

Deal found 6/30

$804

Thu 8/1412:10 pmOPO - DCA

1 stop32h 38mAir Canada

Deal found 7/1

$831

Mon 9/16:05 pmOPO - DCA

1 stop20h 40mTAP AIR PORTUGAL

Deal found 7/1

$859

Sun 8/39:20 amOPO - DCA

2 stops18h 39mAir France

Deal found 7/1

$1,329

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

Mon 9/8

6:00 am-9:03 pm

2 stops20h 03m

Washington, D.C. Reagan-National

Sun 9/14

4:12 pm-6:55 am

1 stop9h 43m

$572

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 9/8

12:20 pm-11:07 pm

2 stops15h 47m

Washington, D.C. Reagan-National

Sun 9/14

1:39 pm-7:35 am

2 stops12h 56m

$581

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 10/2

11:35 am-11:41 pm

2 stops17h 06m

Washington, D.C. Reagan-National

Sun 10/12

5:00 pm-3:30 pm

2 stops17h 30m

$606

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sun 9/28

8:15 am-11:07 pm

2 stops19h 52m

Washington, D.C. Reagan-National

Tue 10/14

11:30 am-7:35 am

2 stops15h 05m

$616

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Tue 9/30

11:35 am-10:11 pm

2 stops15h 36m

Washington, D.C. Reagan-National

Sun 10/12

3:30 pm-10:40 am

2 stops14h 10m

$625

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 8/14

9:55 am-7:49 am

2 stops26h 54m

Washington, D.C. Reagan-National

Thu 8/21

2:54 pm-8:20 pm

2 stops24h 26m

$706

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 7/17

12:10 pm-9:48 pm

1 stop14h 38m

Washington, D.C. Reagan-National

Mon 7/21

12:55 pm-9:35 am

2 stops15h 40m

$713

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 8/21

4:00 pm-7:42 pm

3 stops32h 42m

Washington, D.C. Reagan-National

Wed 9/3

12:55 pm-9:20 am

2 stops15h 25m

$969

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 10/8

6:10 pm-8:09 am

1 stop18h 59m

Washington, D.C. Reagan-National

Tue 10/21

1:35 pm-2:05 pm

2 stops19h 30m

$1,155

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Tue 7/8

8:30 am-12:03 pm

3 stops32h 33m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 17 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.

Reviews of airlines servicing Reagan-National

See what other customers who have flown with Delta, KLM, and Air France from Porto to Washington, D.C. Reagan-National Airport have to say. 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

7,973 reviews

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

7,973 reviews

Delta

8.0

Very good

7,973 reviews

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

1,366 reviews

Delta

8.0

Very good

7,973 reviews

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!

Air France

7.5

Good

1,472 reviews

Delta

8.0

Very good

7,973 reviews

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

8,858 reviews

Delta

8.0

Very good

7,973 reviews

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

7,973 reviews

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

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.
What are the cheapest airlines to fly from Porto to Washington, D.C. Reagan-National Airport one-way?
To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $550. Iberia flights start at $555 while deals on American Airlines start at $556 one-way.
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.

See more FAQs

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$459+ 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 7/8. 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

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Porto to Reagan-National

Round-trip from

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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 July 1, 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 July 1, 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.

Reviews of airlines servicing Reagan-National

See what other customers who have flown with Delta, KLM, and Air France from Porto to Washington, D.C. Reagan-National Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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 Porto?

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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 July 1, 2025.