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Washington, D.C.

$327+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — WAS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$452
(oojo)

One-way from

$327
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$522

Good round-trip deal

$764 or less

Good one-way deal

$443 or less
From Portugal to Washington, D.C. (WAS)
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One-way flight from Portugal to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 15% potential increase in price ($123 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Portugal to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Portugal to Washington, D.C. (WAS).
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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 September 11, 2025.

This Flightnetwork deal was found by Cheapflights users on 9/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/199:20 pmLIS - BWI
1 stop25h 20mPLAY
Sun 10/56:50 pmBWI - LIS
1 stop20h 30mPLAY
Deal found 9/11$397
This oojo deal was found by Cheapflights users on 9/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/213:45 pmLIS - IAD
1 stop32h 05mScandinavian Airlines
Thu 12/118:30 pmIAD - LIS
1 stop14h 35mScandinavian Airlines
Deal found 9/11$452
This Scandinavian Airlines deal was found by Cheapflights users on 9/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:35 pmOPO - IAD
1 stop30h 15mScandinavian Airlines
Thu 11/138:30 pmIAD - OPO
1 stop15h 25mScandinavian Airlines
Deal found 9/11$469
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:20 pmOPO - BWI
1 stop25h 20mPLAY
Sat 10/116:50 pmBWI - OPO
1 stop20h 15mPLAY
Deal found 9/11$482
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:20 pmOPO - BWI
1 stop25h 20mPLAY
Wed 10/86:50 pmBWI - OPO
1 stop20h 30mPLAY
Deal found 9/10$497
This Rumbo deal was found by Cheapflights users on 9/10. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1112:30 pmOPO - IAD
1 stop13h 20mTAP AIR PORTUGAL
Wed 9/245:50 pmIAD - OPO
1 stop10h 10mTAP AIR PORTUGAL
Deal found 9/10$503
This FlightHub deal was found by Cheapflights users on 9/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1711:00 amOPO - IAD
1 stop14h 50mTAP AIR PORTUGAL
Wed 9/245:50 pmIAD - OPO
1 stop16h 10mTAP AIR PORTUGAL
Deal found 9/11$504
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:55 amLIS - IAD
1 stop15h 20mSWISS
Mon 9/298:45 pmIAD - LIS
1 stop15h 35mSWISS
Deal found 9/9$506
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 10/3111:05 amLIS - BWI
2 stops35h 01mAmerican Airlines
Fri 11/78:35 pmBWI - LIS
1 stop16h 20mAmerican Airlines
Deal found 9/11$518
This Finnair deal was found by Cheapflights users on 9/11. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:55 amLIS - BWI
2 stops30h 49mMultiple Airlines
Fri 11/78:35 pmBWI - LIS
1 stop20h 50mMultiple Airlines
Deal found 9/11$519
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:00 amLIS - IAD
1 stop17h 55mMultiple Airlines
Thu 1/86:20 pmIAD - LIS
1 stop12h 50mMultiple Airlines
Deal found 9/11$521
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Thu 10/307:00 amLIS - IAD
1 stop17h 55mAmerican Airlines
Fri 11/79:45 pmIAD - LIS
1 stop19h 40mAmerican Airlines
Deal found 9/11$522

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Washington, D.C. 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 September 11, 2025.
Use the filters below to find and compare flights from Portugal to Washington, D.C. that are best for you.

Fly from

Portugal

Fly to

Washington, D.C.

Route

Depart

Return

Price

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/25

9:20 pm-5:40 pm

1 stop25h 20m

Baltimore/Washington

Sat 10/11

6:50 pm-8:05 pm

1 stop20h 15m

$482

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/25

9:20 pm-5:40 pm

1 stop25h 20m

Baltimore/Washington

Wed 10/8

6:50 pm-8:20 pm

1 stop20h 30m

$497

LisbonBaltimore

LIS - BWI

LISBWI

Lisbon Humberto Delgado

Thu 10/30

10:55 am-1:44 pm

2 stops30h 49m

Baltimore/Washington

Fri 11/7

8:35 pm-10:25 pm

1 stop20h 50m

$519

LisbonBaltimore

LIS - BWI

LISBWI

Lisbon Humberto Delgado

Sat 11/8

7:00 am-6:45 pm

1 stop16h 45m

Baltimore/Washington

Sat 11/15

8:35 pm-2:50 pm

1 stop13h 15m

$523

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 10/7

7:30 pm-3:35 pm

1 stop25h 05m

Washington, D.C. Dulles Intl

Tue 10/14

9:20 pm-2:50 pm

1 stop12h 30m

$523

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 10/7

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 10/14

7:59 pm-5:50 pm

2 stops16h 51m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/8

7:00 am-3:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Sat 11/15

9:45 pm-2:50 pm

1 stop12h 05m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 10/22

7:59 pm-2:50 pm

2 stops13h 51m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 10/22

9:20 pm-2:50 pm

1 stop12h 30m

$524

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 11/18

7:40 pm-3:35 pm

1 stop24h 55m

Washington, D.C. Dulles Intl

Mon 11/24

9:45 pm-9:55 pm

1 stop19h 10m

$525

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 60 results
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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.
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, August is the cheapest month in which you can book a flight from Portugal to Washington, D.C. (average of $292). Flying from Portugal to Washington, D.C. in April is currently the most expensive (average of $337). 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?

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 September 11, 2025.

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 at noon, which can drop the price by up to 38% versus a flight in the morning.

Weekly flight availability from Portugal to Washington, D.C.

Explore weekly flight availability from Portugal to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from PT0 to WAS are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and TAP AIR PORTUGAL 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.
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
TAP AIR PORTUGAL
7.1
Good
1,977 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Lufthansa
6.8
Okay
7,409 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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.?

    A quick flight from Portugal to Washington, D.C. can take about 15h 35m. PLAY provides one of the quickest options available for as low as $524. The distance between Portugal and Washington, D.C. is about 3580 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 British Airways, which is currently one of the cheapest options available, starting at $367. American Airlines flights start at $399 while deals on TAP AIR PORTUGAL start at $407 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 (62%), United Airlines (62%) or Lufthansa (62%) 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 $1,117, our data indicates the cheapest price to be $359. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $506.

  • 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, August is the cheapest month in which you can book a flight from Portugal to Washington, D.C. (average of $292). Flying from Portugal to Washington, D.C. in April is currently the most expensive (average of $337). 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

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Woodbridge
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

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Alternative routes for Portugal to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
Charles de Gaulle to Dulles Intl flights
Frankfurt to Dulles Intl flights
Charles de Gaulle to Reagan-National flights
Orly to Dulles Intl flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
Istanbul to Dulles Intl flights
London City to Dulles Intl flights
Bruxelles-National to Dulles Intl flights
Frankfurt to Reagan-National flights
Gatwick to Reagan-National flights
Amsterdam to Dulles Intl flights
Vienna to Dulles Intl flights
Madrid to Dulles Intl flights
Barcelona-El Prat to Dulles Intl flights
Leonardo da Vinci/Fiumicino to Dulles Intl flights
Munich to Dulles Intl flights
Stansted to Dulles Intl flights
Madrid to Reagan-National flights
Athens to Dulles Intl flights
Dublin to Dulles Intl flights
Bruxelles-National to Reagan-National flights
Zurich to Dulles Intl flights
Duesseldorf Intl to Dulles Intl flights
Istanbul to Reagan-National flights
Luton to Dulles Intl flights
Vicenza to Dulles Intl flights
Frederic Chopin to Dulles Intl flights
Berlin to Dulles Intl flights
Vienna to Reagan-National flights
Frederic Chopin to Reagan-National flights
Barcelona-El Prat to Reagan-National flights
Amsterdam to Reagan-National flights
Duesseldorf Intl to Reagan-National flights
Athens to Reagan-National flights
Berlin to Reagan-National flights
Lisbon to Dulles Intl flights
Malpensa to Dulles Intl flights
Geneva to Dulles Intl flights
Leonardo da Vinci/Fiumicino to Reagan-National flights
Malpensa to Reagan-National flights
Sabiha Gokcen to Dulles Intl flights
Munich to Reagan-National flights
Copenhagen to Dulles Intl flights
Dublin to Reagan-National flights
London City to Reagan-National flights

Top 4 airlines flying from Portugal to Washington, D.C.

Discover the top 4 airlines that operate flights from Portugal to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$480Average$793FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$493Average$644FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$534Average$635FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$536Average$740FlexibilityNo cancel feeOn-time76%

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