How long is the flight from Portugal to Washington, D.C.?

A quick flight from Portugal to Washington, D.C. can take about 14h 35m. Scandinavian Airlines provides one of the quickest options available for as low as $573. The distance between Portugal and Washington, D.C. is about 3537 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from Portugal to Washington, D.C. one-way?

To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $339. American Airlines flights start at $353 while deals on British Airways start at $379 one-way.

In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., 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 are the most popular routes from Portugal to Washington, D.C.?

The most popular flight routes from Portugal to Washington, D.C. are Lisbon Humberto Delgado - Washington, D.C. Dulles Intl, Lisbon Humberto Delgado - Baltimore/Washington and Lisbon Humberto Delgado - Washington, D.C. Reagan-National.

What are the cheapest flights from Portugal to Washington, D.C.?

Looking for the cheapest flight from Portugal to Washington, D.C.? While on average our users pay $930, our data indicates the cheapest price to be $444. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $514.

What are the most reliable airlines from Portugal to Washington, D.C.?

No one likes to see their flight delayed. When booking a flight from Portugal to Washington, D.C. consider choosing Air Canada (74%), United Airlines (74%) or Lufthansa (74%) as they are the most reliable in getting you off to your destination on time.

Can I find deals for flights from Portugal to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Portugal to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portugal to Washington, D.C.?

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

Can I find deals for business class flights from Portugal to Washington, D.C.?

Yes. Cheapflights offers flight deals from Portugal to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$290+ Flights from Portugal to Washington, D.C.

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Find flight deals from Portugal to Washington, D.C.

Cheapest flights from Portugal to Washington, D.C.
Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Fri 11/215:35 pmOPO - IAD

1 stop30h 15mScandinavian Airlines

Thu 12/48:30 pmIAD - OPO

1 stop15h 25mScandinavian Airlines

Deal found 10/29

$519

Thu 12/411:25 amLIS - IAD

Nonstop8h 50mTAP AIR PORTUGAL

Tue 12/95:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

Deal found 10/28

$558

Mon 11/246:30 amOPO - IAD

1 stop14h 35mKLM

Mon 12/16:50 pmIAD - OPO

1 stop10h 40mKLM

Deal found 10/29

$572

Mon 11/246:30 amOPO - IAD

1 stop14h 35mDelta

Mon 12/16:50 pmIAD - OPO

1 stop10h 40mDelta

Deal found 10/29

$573

Sat 11/85:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sat 11/156:50 pmIAD - LIS

1 stop15h 20mMultiple Airlines

Deal found 10/27

$576

Fri 11/216:30 amOPO - DCA

2 stops21h 26mDelta

Thu 12/411:13 amDCA - OPO

2 stops18h 12mDelta

Deal found 10/30

$577

Mon 11/246:30 amOPO - DCA

2 stops21h 26mDelta

Mon 12/111:10 amDCA - OPO

2 stops18h 20mDelta

Deal found 10/29

$578

Sun 11/95:00 amLIS - IAD

1 stop16h 05mDelta

Mon 11/246:50 pmIAD - LIS

1 stop11h 30mDelta

Deal found 10/28

$578

Sat 11/226:00 amOPO - IAD

2 stops18h 08mDelta

Sun 4/56:30 pmIAD - OPO

1 stop16h 00mDelta

Deal found 10/29

$578

Wed 11/55:00 amLIS - IAD

1 stop16h 05mDelta

Wed 11/127:49 pmIAD - LIS

2 stops16h 41mDelta

Deal found 10/29

$579

Mon 12/85:30 amLIS - IAD

1 stop16h 05mDelta

Fri 2/612:23 pmIAD - LIS

2 stops17h 57mDelta

Deal found 10/30

$580

Thu 12/185:30 amLIS - IAD

1 stop16h 05mDelta

Thu 1/812:23 pmIAD - LIS

2 stops17h 57mDelta

Deal found 10/29

$581

Best flights from Portugal to Washington, D.C.
Discover carefully curated flight deals from Portugal to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.

Fri 11/215:35 pmOPO - IAD

1 stop30h 15mScandinavian Airlines

Thu 12/48:30 pmIAD - OPO

1 stop15h 25mScandinavian Airlines

Deal found 10/29

$519

Sat 11/226:00 amOPO - IAD

1 stop15h 05mKLM

Sun 4/59:20 pmIAD - OPO

1 stop13h 10mKLM

Deal found 10/29

$572

Mon 11/246:30 amOPO - IAD

1 stop14h 35mDelta

Mon 12/16:50 pmIAD - OPO

1 stop10h 40mDelta

Deal found 10/29

$573

Mon 2/25:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Fri 2/136:50 pmIAD - LIS

1 stop11h 30mMultiple Airlines

Deal found 10/30

$577

Sat 11/226:00 amOPO - IAD

2 stops43h 26mAir Canada

Sun 4/59:55 amIAD - OPO

2 stops27h 35mAir Canada

Deal found 10/29

$591

Sun 2/110:40 amLIS - BWI

1 stop13h 05mAmerican Airlines

Thu 2/268:35 pmBWI - LIS

1 stop13h 10mAmerican Airlines

Deal found 10/28

$594

Thu 12/1812:30 pmOPO - DCA

2 stops34h 35mUnited Airlines

Tue 12/306:30 amDCA - OPO

2 stops24h 10mUnited Airlines

Deal found 10/30

$614

Sun 1/254:55 pmLIS - IAD

1 stop27h 25mScandinavian Airlines

Thu 1/298:30 pmIAD - LIS

2 stops20h 20mScandinavian Airlines

Deal found 10/28

$571

Mon 11/246:30 amOPO - IAD

1 stop14h 35mKLM

Mon 12/16:50 pmIAD - OPO

1 stop10h 40mKLM

Deal found 10/29

$572

Fri 11/216:30 amOPO - DCA

2 stops21h 26mDelta

Thu 12/411:13 amDCA - OPO

2 stops18h 12mDelta

Deal found 10/30

$577

Mon 11/246:30 amOPO - DCA

2 stops15h 30mMultiple Airlines

Mon 12/12:59 pmDCA - OPO

2 stops14h 31mMultiple Airlines

Deal found 10/29

$587

Mon 11/246:00 amOPO - DCA

2 stops21h 42mUnited Airlines

Sun 11/306:05 pmDCA - OPO

1 stop10h 25mUnited Airlines

Deal found 10/29

$614

Mon 11/246:00 amOPO - DCA

2 stops41h 05mAir Canada

Sun 11/306:00 amDCA - OPO

2 stops25h 50mAir Canada

Deal found 10/29

$616

Sun 11/95:00 amLIS - IAD

1 stop16h 05mDelta

Mon 11/246:50 pmIAD - LIS

1 stop17h 40mDelta

Deal found 10/28

$578

Thu 12/188:40 amOPO - IAD

1 stop13h 00mMultiple Airlines

Wed 12/3110:55 pmIAD - OPO

1 stop19h 45mMultiple Airlines

Deal found 10/30

$597

Mon 11/2412:35 pmOPO - DCA

1 stop11h 29mUnited Airlines

Mon 12/11:10 pmDCA - OPO

2 stops17h 30mUnited Airlines

Deal found 10/29

$620

Thu 12/45:00 amLIS - IAD

1 stop16h 05mDelta

Tue 12/97:59 pmIAD - LIS

2 stops16h 31mDelta

Deal found 10/28

$578

Thu 12/1811:20 amOPO - DCA

2 stops16h 37mKLM

Wed 12/312:25 pmDCA - OPO

2 stops15h 05mKLM

Deal found 10/30

$657

Thu 11/135:00 amLIS - IAD

1 stop16h 05mDelta

Fri 11/287:49 pmIAD - LIS

2 stops14h 21mDelta

Deal found 10/28

$578

Mon 11/2412:35 pmOPO - BWI

2 stops26h 24mUnited Airlines

Mon 12/16:15 amBWI - OPO

2 stops24h 25mUnited Airlines

Deal found 10/29

$656

Mon 11/246:30 amOPO - DCA

2 stops21h 26mDelta

Mon 12/111:10 amDCA - OPO

2 stops18h 20mDelta

Deal found 10/29

$578

Fri 12/1911:20 amOPO - BWI

2 stops16h 44mKLM

Tue 12/306:59 pmBWI - OPO

2 stops15h 26mKLM

Deal found 10/30

$707

Sat 11/226:00 amOPO - IAD

2 stops18h 08mDelta

Sun 4/56:30 pmIAD - OPO

1 stop16h 00mDelta

Deal found 10/29

$578

Wed 4/112:35 pmOPO - DCA

1 stop13h 03mUnited Airlines

Sun 4/57:00 pmDCA - OPO

1 stop9h 45mUnited Airlines

Deal found 10/28

$726

Thu 12/1811:20 amOPO - BWI

2 stops16h 43mKLM

Wed 12/312:00 pmBWI - OPO

2 stops15h 30mKLM

Deal found 10/30

$735

Mon 12/85:30 amLIS - IAD

1 stop16h 05mDelta

Fri 2/66:50 pmIAD - LIS

1 stop17h 40mDelta

Deal found 10/30

$580

Fri 11/216:30 amOPO - IAD

1 stop14h 35mDelta

Thu 12/412:19 pmIAD - OPO

2 stops17h 11mDelta

Deal found 10/29

$582

Mon 11/2412:35 pmOPO - BWI

2 stops26h 24mUnited Airlines

Sun 11/3010:56 amBWI - OPO

2 stops19h 44mUnited Airlines

Deal found 10/29

$796

Thu 12/185:00 amLIS - IAD

2 stops19h 19mDelta

Thu 1/812:23 pmIAD - LIS

2 stops17h 57mDelta

Deal found 10/28

$583

Mon 11/246:30 amOPO - BWI

2 stops17h 33mKLM

Mon 12/17:27 pmBWI - OPO

2 stops14h 58mKLM

Deal found 10/29

$863

Last-minute flights from Portugal to Washington, D.C.
Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated October 30, 2025 and is based on user searches.

Wed 11/55:00 amLIS - IAD

1 stop16h 05mDelta

Wed 11/127:49 pmIAD - LIS

2 stops16h 41mDelta

Deal found 10/29

$579

Sat 11/85:00 amLIS - IAD

1 stop16h 05mMultiple Airlines

Sat 11/156:50 pmIAD - LIS

1 stop15h 20mMultiple Airlines

Deal found 10/27

$576

Sat 11/85:00 amLIS - IAD

2 stops19h 18mDelta

Sat 11/156:50 pmIAD - LIS

1 stop15h 20mDelta

Deal found 10/27

$583

Sun 11/95:00 amLIS - IAD

1 stop16h 05mDelta

Mon 11/246:50 pmIAD - LIS

1 stop11h 30mDelta

Deal found 10/28

$578

Fri 11/215:35 pmOPO - IAD

1 stop30h 15mScandinavian Airlines

Thu 12/48:30 pmIAD - OPO

1 stop15h 25mScandinavian Airlines

Deal found 10/29

$519

Fri 11/216:30 amOPO - DCA

2 stops21h 26mDelta

Thu 12/411:13 amDCA - OPO

2 stops18h 12mDelta

Deal found 10/30

$577

Fri 11/215:00 amLIS - IAD

1 stop16h 05mDelta

Thu 12/46:50 pmIAD - LIS

1 stop15h 20mDelta

Deal found 10/29

$580

Fri 11/216:30 amOPO - IAD

1 stop14h 35mDelta

Thu 12/412:19 pmIAD - OPO

2 stops17h 11mDelta

Deal found 10/30

$581

Sat 11/226:00 amOPO - IAD

2 stops18h 08mDelta

Sun 4/56:30 pmIAD - OPO

1 stop16h 00mDelta

Deal found 10/29

$578

Mon 11/246:30 amOPO - IAD

1 stop14h 35mKLM

Mon 12/16:50 pmIAD - OPO

1 stop10h 40mKLM

Deal found 10/29

$572

Mon 11/246:30 amOPO - IAD

1 stop14h 35mDelta

Mon 12/16:50 pmIAD - OPO

1 stop10h 40mDelta

Deal found 10/29

$573

Mon 11/246:30 amOPO - DCA

2 stops21h 26mDelta

Mon 12/111:10 amDCA - OPO

2 stops18h 20mDelta

Deal found 10/29

$578

One-way flights from Portugal to Washington, D.C.
Search for one-way flight options from Portugal to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 30, 2025.

Wed 1/147:35 pmLIS - BWI

2 stops41h 10mMultiple Airlines

Deal found 10/30

$290

Thu 12/188:20 amOPO - IAD

1 stop13h 10mIberia

Deal found 10/29

$339

Wed 4/88:20 amOPO - IAD

1 stop12h 10mIberia

Deal found 10/30

$340

Thu 12/188:20 amOPO - DCA

2 stops15h 22mAmerican Airlines

Deal found 10/29

$353

Thu 12/187:00 amLIS - BWI

1 stop16h 45mAmerican Airlines

Deal found 10/28

$362

Wed 3/1810:40 amLIS - BWI

1 stop13h 05mAmerican Airlines

Deal found 10/30

$363

Tue 2/37:05 amLIS - BWI

1 stop16h 40mBritish Airways

Deal found 10/28

$364

Tue 1/1311:05 amLIS - BWI

2 stops15h 13mAmerican Airlines

Deal found 10/30

$368

Sat 2/216:40 pmLIS - BWI

1 stop29h 05mBritish Airways

Deal found 10/30

$370

Sun 12/2111:05 amLIS - BWI

2 stops13h 20mMultiple Airlines

Deal found 10/28

$375

Wed 12/1711:05 amLIS - BWI

2 stops16h 03mMultiple Airlines

Deal found 10/28

$376

Fri 12/198:20 amOPO - DCA

2 stops17h 39mAmerican Airlines

Deal found 10/29

$377

Cheap flight deals from Portugal to Washington, D.C.

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$460 (Booking.com)
One-way from	$290 (Kiwi.com)
Popular in	July
Cheapest in	September
Average price	$830
Good round-trip deal	$799 or less
Good one-way deal	$831 or less

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

Search Deals

Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. (WAS) flights.

Search Deals

From Portugal to Washington, D.C. (WAS)

Search Deals

One-way flight from Portugal to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($94 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Price to beat on a round-trip flight from Portugal to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from Portugal to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 11/21

5:35 pm-6:50 pm

1 stop30h 15m

Washington, D.C. Dulles Intl

Thu 12/4

8:30 pm-4:55 pm

1 stop15h 25m

$519

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 1/25

4:55 pm-3:20 pm

1 stop27h 25m

Washington, D.C. Dulles Intl

Thu 1/29

8:30 pm-9:50 pm

2 stops20h 20m

$571

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sat 11/22

6:00 am-4:05 pm

1 stop15h 05m

Washington, D.C. Dulles Intl

Sun 4/5

9:20 pm-3:30 pm

1 stop13h 10m

$572

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 11/24

6:30 am-4:05 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Mon 12/1

6:50 pm-10:30 am

1 stop10h 40m

$572

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 11/24

6:30 am-4:05 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Mon 12/1

6:50 pm-10:30 am

1 stop10h 40m

$573

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 2/2

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Fri 2/13

6:50 pm-11:20 am

1 stop11h 30m

$577

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Fri 11/21

6:30 am-10:56 pm

2 stops21h 26m

Washington, D.C. Reagan-National

Thu 12/4

11:13 am-10:25 am

2 stops18h 12m

$577

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 11/9

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Mon 11/24

6:50 pm-5:30 pm

1 stop17h 40m

$578

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 12/4

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Tue 12/9

7:59 pm-5:30 pm

2 stops16h 31m

$578

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 11/13

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Fri 11/28

7:49 pm-3:10 pm

2 stops14h 21m

$578

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results

...

Best time to book a flight from Portugal to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

What is the cheapest month to book a flight from Portugal to Washington, D.C.?

Currently, February is the cheapest month in which you can book a flight from Portugal to Washington, D.C. (average of $485). Flying from Portugal to Washington, D.C. in July is currently the most expensive (average of $695). 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.

What is the cheapest time of day to fly from PT to WAS?

When flying from Portugal to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 37% versus a flight in the morning.

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with United Airlines, TAP AIR PORTUGAL, and Lufthansa from Portugal to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

United Airlines

7.4

Good

8,998 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

TAP AIR PORTUGAL

7.1

Good

2,040 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Lufthansa

6.8

Okay

7,541 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

British Airways

6.7

Okay

7,487 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

How long is the flight from Portugal to Washington, D.C.?
A quick flight from Portugal to Washington, D.C. can take about 14h 35m. Scandinavian Airlines provides one of the quickest options available for as low as $573. The distance between Portugal and Washington, D.C. is about 3537 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from Portugal to Washington, D.C. one-way?
To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $339. American Airlines flights start at $353 while deals on British Airways start at $379 one-way.
What are the most popular routes from Portugal to Washington, D.C.?
The most popular flight routes from Portugal to Washington, D.C. are Lisbon Humberto Delgado - Washington, D.C. Dulles Intl, Lisbon Humberto Delgado - Baltimore/Washington and Lisbon Humberto Delgado - Washington, D.C. Reagan-National.
What are the most reliable airlines from Portugal to Washington, D.C.?
No one likes to see their flight delayed. When booking a flight from Portugal to Washington, D.C. consider choosing Air Canada (74%), United Airlines (74%) or Lufthansa (74%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Portugal to Washington, D.C.?
Looking for the cheapest flight from Portugal to Washington, D.C.? While on average our users pay $930, our data indicates the cheapest price to be $444. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $514.
Can I find deals for flights from Portugal to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Portugal to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Washington, D.C..
Can I find deals for business class flights from Portugal to Washington, D.C.?
Yes. Cheapflights offers flight deals from Portugal to Washington, D.C. 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 Portugal to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from Portugal to Washington, D.C. (average of $485). Flying from Portugal to Washington, D.C. in July is currently the most expensive (average of $695). 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

Alexandria

Woodbridge

Tysons

Arlington

Springfield

Hanover

Silver Spring

Fairfax

Fredericksburg

Falls Church

Owings Mills

Linthicum Heights

Manassas

Largo

Oxon Hill

Laurel

Towson

National Harbor

Waldorf

Bowie

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Portugal to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$480	Average$781	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$493	Average$644	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$534	Average$701	FlexibilityNo cancel fee	On-time69%

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$290+ Cheap flights from Portugal to Washington, D.C. (WAS)

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.

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Find flight deals from Portugal to Washington, D.C.

Cheapest flights from Portugal to Washington, D.C.Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Cheap flight deals from Portugal to Washington, D.C.

Keep the following information in mind while searching for Portugal to Washington, D.C. flight deals. Data was last updated October 30, 2025.

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Best time to book a flight from Portugal to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Portugal with our price prediction graph.

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Everything you need to know about your flight from Portugal to Washington, D.C.

What is the cheapest month to book a flight from Portugal to Washington, D.C.?

What is the cheapest time of day to fly from PT to WAS?

Find hourly flight availability from Portugal to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with United Airlines, TAP AIR PORTUGAL, and Lufthansa from Portugal to Washington, D.C. to help guide your decision. You can also see how each airline stacks up 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 Portugal to Washington, D.C.. 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.?

What are the cheapest airlines to fly from Portugal to Washington, D.C. one-way?

What are the most popular routes from Portugal to Washington, D.C.?

What are the most reliable airlines from Portugal to Washington, D.C.?

What are the cheapest flights from Portugal to Washington, D.C.?

Can I find deals for flights from Portugal to Washington, D.C. that include hotel bookings?

How can I find direct flights from Portugal to Washington, D.C.?

Can I find deals for business class flights from Portugal to Washington, D.C.?

What is the cheapest month to book a flight from Portugal to Washington, D.C.?

Traveling to a place near Washington, D.C.?

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Alternative routes for Portugal to Washington, D.C.

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Top 3 airlines flying from Portugal to Washington, D.C.

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Cheapest flights from Portugal to Washington, D.C.
Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.