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 time of day to fly from PT to DCA?

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

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

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

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

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

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

Yes. Cheapflights offers flight deals from Portugal 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.

$367+ Flights from Portugal to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Portugal to Reagan-National

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$521 (Delta)
One-way from	$367 (American Airlines)
Popular in	July
Cheapest in	September
Average price	$726

Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. (WAS) flight deals.

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

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

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Highest demand for flights based on searches. 10% potential increase in price ($85 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in January 2026

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Find flight deals from Portugal to Reagan-National

Cheapest flights from Portugal to Reagan-National
Explore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.

Sat 1/2411:15 amOPO - DCA

2 stops16h 44mDelta

Tue 1/2711:10 amDCA - OPO

2 stops18h 20mDelta

Deal found 1/6

$521

Thu 1/1510:55 amLIS - DCA

1 stop10h 55mBritish Airways

Wed 1/215:45 pmDCA - LIS

2 stops16h 05mBritish Airways

Deal found 1/6

$521

Thu 1/1511:15 amOPO - DCA

2 stops16h 33mDelta

Wed 1/2812:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 1/5

$522

Fri 2/138:20 amLIS - DCA

2 stops29h 25mBritish Airways

Sat 2/217:41 pmDCA - LIS

2 stops32h 24mBritish Airways

Deal found 1/4

$527

Thu 1/1511:25 amLIS - DCA

2 stops16h 23mDelta

Wed 1/212:35 pmDCA - LIS

2 stops15h 45mDelta

Deal found 1/6

$530

Mon 1/125:00 amLIS - DCA

2 stops16h 29mMultiple Airlines

Sun 1/255:59 pmDCA - LIS

2 stops16h 11mMultiple Airlines

Deal found 1/5

$532

Thu 1/1510:55 amLIS - DCA

1 stop15h 35mAmerican Airlines

Wed 1/211:44 pmDCA - LIS

1 stop14h 11mAmerican Airlines

Deal found 1/5

$533

Wed 1/215:00 amLIS - DCA

2 stops17h 53mDelta

Fri 1/3011:10 amDCA - LIS

1 stop15h 50mDelta

Deal found 1/5

$534

Tue 2/38:20 amOPO - DCA

2 stops15h 36mIberia

Tue 2/171:44 pmDCA - OPO

2 stops17h 01mIberia

Deal found 1/6

$536

Wed 1/2110:00 amLIS - DCA

1 stop17h 48mKLM

Fri 1/306:00 amDCA - LIS

1 stop21h 00mKLM

Deal found 1/6

$536

Thu 1/158:20 amOPO - DCA

2 stops15h 36mAmerican Airlines

Wed 1/281:35 pmDCA - OPO

2 stops13h 05mAmerican Airlines

Deal found 1/5

$537

Wed 2/410:40 amLIS - DCA

2 stops16h 23mBritish Airways

Sun 2/84:43 pmDCA - LIS

1 stop11h 22mBritish Airways

Deal found 1/5

$542

Best flights from Portugal to Reagan-National
Discover carefully curated flight deals from Portugal to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 6, 2026.

Sat 1/2411:15 amOPO - DCA

2 stops16h 44mDelta

Tue 1/2711:10 amDCA - OPO

2 stops18h 20mDelta

Deal found 1/6

$521

Wed 2/1111:05 amLIS - DCA

1 stop10h 45mBritish Airways

Fri 2/204:34 pmDCA - LIS

2 stops24h 51mBritish Airways

Deal found 1/5

$521

Tue 2/38:20 amOPO - DCA

2 stops15h 36mIberia

Tue 2/171:44 pmDCA - OPO

2 stops17h 01mIberia

Deal found 1/6

$536

Mon 6/158:20 amOPO - DCA

2 stops28h 26mAmerican Airlines

Sun 7/199:42 amDCA - OPO

2 stops21h 03mAmerican Airlines

Deal found 1/4

$537

Sat 1/245:00 amOPO - DCA

2 stops16h 29mKLM

Tue 1/277:30 pmDCA - OPO

2 stops14h 55mKLM

Deal found 1/6

$543

Thu 4/166:00 amOPO - DCA

2 stops21h 43mUnited Airlines

Sun 4/196:00 pmDCA - OPO

1 stop10h 45mUnited Airlines

Deal found 1/5

$598

Fri 2/1311:05 amLIS - DCA

1 stop14h 41mBritish Airways

Wed 2/181:28 pmDCA - LIS

2 stops20h 22mBritish Airways

Deal found 1/5

$521

Mon 2/238:20 amOPO - DCA

2 stops29h 39mAmerican Airlines

Sun 3/811:32 amDCA - OPO

2 stops16h 08mAmerican Airlines

Deal found 1/6

$537

Thu 2/198:20 amOPO - DCA

2 stops19h 15mIberia

Thu 2/266:14 pmDCA - OPO

2 stops12h 31mIberia

Deal found 1/5

$537

Thu 2/1210:55 amLIS - DCA

1 stop14h 48mBritish Airways

Sun 2/151:30 pmDCA - LIS

2 stops17h 35mBritish Airways

Deal found 1/5

$521

Mon 2/2312:35 pmOPO - DCA

1 stop12h 00mUnited Airlines

Sun 3/86:00 pmDCA - OPO

1 stop11h 30mUnited Airlines

Deal found 1/6

$619

Thu 2/1210:55 amLIS - DCA

1 stop14h 48mBritish Airways

Wed 2/181:28 pmDCA - LIS

2 stops20h 22mBritish Airways

Deal found 1/5

$521

Sat 1/248:20 amOPO - DCA

2 stops15h 48mIberia

Wed 1/281:59 pmDCA - OPO

2 stops16h 46mIberia

Deal found 1/6

$580

Fri 2/1311:05 amLIS - DCA

1 stop14h 41mBritish Airways

Sun 2/1512:25 pmDCA - LIS

2 stops21h 25mBritish Airways

Deal found 1/5

$521

Fri 2/1311:05 amLIS - DCA

1 stop14h 41mBritish Airways

Fri 2/204:34 pmDCA - LIS

2 stops20h 21mBritish Airways

Deal found 1/5

$521

Wed 2/1111:05 amLIS - DCA

1 stop10h 45mBritish Airways

Sun 2/152:16 pmDCA - LIS

2 stops16h 49mBritish Airways

Deal found 1/5

$521

Sat 2/1410:40 amLIS - DCA

1 stop14h 09mBritish Airways

Wed 2/185:00 pmDCA - LIS

2 stops16h 50mBritish Airways

Deal found 1/5

$521

Sat 2/710:40 amLIS - DCA

1 stop11h 10mBritish Airways

Sun 2/153:40 pmDCA - LIS

2 stops15h 25mBritish Airways

Deal found 1/4

$521

Wed 2/1111:05 amLIS - DCA

1 stop10h 45mBritish Airways

Tue 2/172:16 pmDCA - LIS

2 stops19h 29mBritish Airways

Deal found 1/5

$521

Sun 2/811:05 amLIS - DCA

1 stop10h 45mBritish Airways

Sun 2/153:40 pmDCA - LIS

2 stops18h 10mBritish Airways

Deal found 1/4

$521

Sat 2/1410:40 amLIS - DCA

1 stop14h 09mBritish Airways

Tue 2/175:00 pmDCA - LIS

2 stops16h 45mBritish Airways

Deal found 1/5

$521

Last-minute flights from Portugal to Reagan-National
Discover last-minute flight deals from Portugal to Reagan-National. Data last updated January 6, 2026 and is based on user searches.

Mon 1/125:00 amLIS - DCA

2 stops16h 29mMultiple Airlines

Sun 1/255:59 pmDCA - LIS

2 stops16h 11mMultiple Airlines

Deal found 1/5

$532

Thu 1/1510:55 amLIS - DCA

1 stop10h 55mBritish Airways

Wed 1/215:45 pmDCA - LIS

2 stops16h 05mBritish Airways

Deal found 1/6

$521

Thu 1/1511:15 amOPO - DCA

2 stops16h 33mDelta

Wed 1/2812:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 1/5

$522

Thu 1/1511:25 amLIS - DCA

2 stops16h 23mDelta

Wed 1/212:35 pmDCA - LIS

2 stops15h 45mDelta

Deal found 1/6

$530

Thu 1/1510:55 amLIS - DCA

1 stop15h 35mAmerican Airlines

Wed 1/211:44 pmDCA - LIS

1 stop14h 11mAmerican Airlines

Deal found 1/5

$533

Thu 1/158:20 amOPO - DCA

2 stops15h 36mAmerican Airlines

Wed 1/281:35 pmDCA - OPO

2 stops13h 05mAmerican Airlines

Deal found 1/5

$537

Wed 1/215:00 amLIS - DCA

2 stops17h 53mDelta

Fri 1/3011:10 amDCA - LIS

1 stop15h 50mDelta

Deal found 1/5

$534

Wed 1/2110:00 amLIS - DCA

1 stop17h 48mKLM

Fri 1/306:00 amDCA - LIS

1 stop21h 00mKLM

Deal found 1/6

$536

Sat 1/2411:15 amOPO - DCA

2 stops16h 44mDelta

Mon 1/2612:00 pmDCA - OPO

2 stops17h 30mDelta

Deal found 1/6

$521

Tue 2/38:20 amOPO - DCA

2 stops15h 36mIberia

Tue 2/171:44 pmDCA - OPO

2 stops17h 01mIberia

Deal found 1/6

$536

Wed 2/410:40 amLIS - DCA

2 stops16h 23mBritish Airways

Sun 2/84:43 pmDCA - LIS

1 stop11h 22mBritish Airways

Deal found 1/5

$542

Fri 2/138:20 amLIS - DCA

2 stops29h 25mBritish Airways

Sat 2/217:41 pmDCA - LIS

2 stops32h 24mBritish Airways

Deal found 1/4

$527

One-way flights from Portugal to Reagan-National
Search for one-way flight options from Portugal to Reagan-National. Find affordable one-way fares based on user searches. Data last updated January 6, 2026.

Wed 6/38:20 amOPO - DCA

2 stops19h 50mAmerican Airlines

Deal found 1/6

$367

Wed 3/188:20 amLIS - DCA

2 stops17h 56mIberia

Deal found 1/6

$371

Wed 3/1811:05 amLIS - DCA

1 stop13h 38mBritish Airways

Deal found 1/6

$373

Tue 3/248:20 amLIS - DCA

2 stops17h 56mIberia

Deal found 1/6

$375

Thu 5/76:35 amLIS - DCA

2 stops20h 40mIberia

Deal found 1/3

$377

Sat 3/77:00 amLIS - DCA

2 stops17h 13mBritish Airways

Deal found 1/5

$383

Wed 6/38:20 amOPO - DCA

2 stops18h 10mBritish Airways

Deal found 1/6

$387

Fri 4/176:35 amLIS - DCA

2 stops20h 58mFinnair

Deal found 1/4

$394

Tue 5/1912:30 pmLIS - DCA

2 stops14h 47mIberia

Deal found 1/5

$396

Wed 2/258:20 amLIS - DCA

2 stops18h 10mAmerican Airlines

Deal found 1/5

$400

Wed 3/2511:05 amLIS - DCA

2 stops15h 11mAmerican Airlines

Deal found 1/6

$406

Tue 6/168:20 amOPO - DCA

2 stops16h 40mBritish Airways

Deal found 1/5

$510

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal 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

Sat 1/24

11:15 am-10:59 pm

2 stops16h 44m

Washington, D.C. Reagan-National

Tue 1/27

11:10 am-10:30 am

2 stops18h 20m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Wed 2/11

11:05 am-4:50 pm

1 stop10h 45m

Washington, D.C. Reagan-National

Fri 2/20

4:34 pm-10:25 pm

2 stops24h 51m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Fri 2/13

11:05 am-8:46 pm

1 stop14h 41m

Washington, D.C. Reagan-National

Wed 2/18

1:28 pm-2:50 pm

2 stops20h 22m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 2/12

10:55 am-8:43 pm

1 stop14h 48m

Washington, D.C. Reagan-National

Sun 2/15

1:30 pm-12:05 pm

2 stops17h 35m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 2/12

10:55 am-8:43 pm

1 stop14h 48m

Washington, D.C. Reagan-National

Wed 2/18

1:28 pm-2:50 pm

2 stops20h 22m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Fri 2/13

11:05 am-8:46 pm

1 stop14h 41m

Washington, D.C. Reagan-National

Sun 2/15

12:25 pm-2:50 pm

2 stops21h 25m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Fri 2/13

11:05 am-8:46 pm

1 stop14h 41m

Washington, D.C. Reagan-National

Fri 2/20

4:34 pm-5:55 pm

2 stops20h 21m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Wed 2/11

11:05 am-4:50 pm

1 stop10h 45m

Washington, D.C. Reagan-National

Sun 2/15

2:16 pm-12:05 pm

2 stops16h 49m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Sat 2/14

10:40 am-7:49 pm

1 stop14h 09m

Washington, D.C. Reagan-National

Wed 2/18

5:00 pm-2:50 pm

2 stops16h 50m

$521

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Sat 2/7

10:40 am-4:50 pm

1 stop11h 10m

Washington, D.C. Reagan-National

Sun 2/15

3:40 pm-12:05 pm

2 stops15h 25m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 42 results

...

Best time to book a flight from Portugal to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Portugal 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 Portugal to Washington, D.C. Reagan-National Airport

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Related info for your journey

How long is the flight from Portugal to Washington, D.C. Reagan-National Airport?
Departing from Portugal to Washington, D.C. Reagan-National Airport will take you 10h 45m. Airlines will cover a distance of 3562 mi. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Portugal to Reagan-National that include hotel bookings?
Yes. In addition to deals on Portugal to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Reagan-National.
Can I find deals for business class flights from Portugal to Reagan-National?
Yes. Cheapflights offers flight deals from Portugal 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

Alexandria

Woodbridge

Tysons

Arlington

Owings Mills

Springfield

Silver Spring

Hanover

Fredericksburg

Linthicum Heights

Rockville

Laurel

Towson

Manassas

National Harbor

Bowie

Largo

McLean

Clinton

Cordova

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$367+ Cheap flights from Portugal 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portugal 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 Portugal to Reagan-National

Keep the following information in mind while searching for Portugal to Reagan-National flight deals. Data was last updated January 6, 2026.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portugal to Reagan-National

Cheapest flights from Portugal to Reagan-NationalExplore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.

Explore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.

Cheapflights Fare Finder

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

Best time to book a flight from Portugal to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Portugal with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Washington, D.C. Reagan-National Airport

Related info for your journey

Find useful and relevant information for your journey from Portugal to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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Cheapest flights from Portugal to Reagan-National
Explore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.