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Washington, D.C.

$329+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — WAS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$437
(Mytrip)

One-way from

$329
(oojo)

Popular in

August

Cheapest in

September

Average price

$883

Good round-trip deal

$658 or less

Good one-way deal

$650 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. 10% potential increase in price ($84 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This Mytrip deal was found by Cheapflights users on 7/30. 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 9/49:20 pmOPO - BWI
1 stop25h 20mPLAY
Sat 9/206:50 pmBWI - OPO
1 stop20h 15mPLAY
Deal found 7/30$437
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Sat 9/136:30 amLIS - BWI
2 stops16h 10mMultiple Airlines
Sat 9/206:50 pmBWI - LIS
2 stops22h 05mMultiple Airlines
Deal found 7/30$480
This lol.travel deal was found by Cheapflights users on 7/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:15 pmOPO - IAD
1 stop23h 05mTAP AIR PORTUGAL
Wed 10/110:20 pmIAD - OPO
1 stop13h 45mTAP AIR PORTUGAL
Deal found 7/29$482
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/275:00 amLIS - IAD
1 stop15h 35mDelta
Wed 9/39:20 pmIAD - LIS
1 stop15h 35mDelta
Deal found 7/30$539
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1311:40 amLIS - DCA
2 stops17h 01mDelta
Sat 9/205:00 pmDCA - LIS
2 stops16h 50mDelta
Deal found 7/30$544
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:00 amLIS - BWI
2 stops17h 05mDelta
Sat 9/271:00 pmBWI - LIS
2 stops17h 15mDelta
Deal found 7/30$544
This KLM deal was found by Cheapflights users on 7/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:30 pmLIS - IAD
1 stop25h 05mMultiple Airlines
Wed 11/126:50 pmIAD - LIS
1 stop15h 20mMultiple Airlines
Deal found 7/28$548
This KLM deal was found by Cheapflights users on 7/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:30 pmLIS - IAD
1 stop25h 05mKLM
Sat 9/135:25 pmIAD - LIS
1 stop12h 30mKLM
Deal found 7/29$551
This lol.travel deal was found by Cheapflights users on 7/30. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:05 amLIS - IAD
1 stop13h 25mUnited Airlines
Mon 9/1510:20 pmIAD - LIS
1 stop18h 30mUnited Airlines
Deal found 7/30$553
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:15 amOPO - IAD
1 stop14h 20mDelta
Tue 10/217:59 pmIAD - OPO
2 stops14h 31mDelta
Deal found 7/30$553
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/118:25 amLIS - IAD
1 stop11h 35mAmerican Airlines
Sat 9/2710:45 pmIAD - LIS
1 stop14h 20mAmerican Airlines
Deal found 7/30$559
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:30 amOPO - DCA
2 stops16h 44mDelta
Sat 9/205:15 pmDCA - OPO
2 stops17h 15mDelta
Deal found 7/30$559

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 July 30, 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 9/4

9:20 pm-5:40 pm

1 stop25h 20m

Baltimore/Washington

Sat 9/20

6:50 pm-8:05 pm

1 stop20h 15m

$437

LisbonBaltimore

LIS - BWI

LISBWI

Lisbon Humberto Delgado

Sat 9/13

6:30 am-5:40 pm

2 stops16h 10m

Baltimore/Washington

Sat 9/20

6:50 pm-9:55 pm

2 stops22h 05m

$480

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 9/18

9:15 pm-3:20 pm

1 stop23h 05m

Washington, D.C. Dulles Intl

Wed 10/1

10:20 pm-5:05 pm

1 stop13h 45m

$482

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 8/27

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/3

9:20 pm-5:55 pm

1 stop15h 35m

$539

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Sat 9/13

11:40 am-11:41 pm

2 stops17h 01m

Washington, D.C. Reagan-National

Sat 9/20

5:00 pm-2:50 pm

2 stops16h 50m

$544

LisbonBaltimore

LIS - BWI

LISBWI

Lisbon Humberto Delgado

Thu 9/11

5:00 am-5:05 pm

2 stops17h 05m

Baltimore/Washington

Sat 9/27

1:00 pm-11:15 am

2 stops17h 15m

$544

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/11

7:30 pm-3:35 pm

1 stop25h 05m

Washington, D.C. Dulles Intl

Sat 9/27

9:20 pm-5:55 pm

1 stop15h 35m

$547

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 8/29

7:30 pm-3:35 pm

1 stop25h 05m

Washington, D.C. Dulles Intl

Sat 9/13

5:25 pm-10:55 am

1 stop12h 30m

$551

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/1

5:05 am-1:30 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Mon 9/15

10:20 pm-9:50 pm

1 stop18h 30m

$553

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/11

8:25 am-3:00 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 9/27

10:45 pm-6:05 pm

1 stop14h 20m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 $241). Flying from Portugal to Washington, D.C. in March is currently the most expensive (average of $290). 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 July 30, 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 July 30, 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 July 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Finnair 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
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    To fly one-way, consider booking your trip with WorldTicket, which is currently one of the cheapest options available, starting at $329. PLAY flights start at $365 while deals on Royal Air Maroc start at $394 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.

  • 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 $241). Flying from Portugal to Washington, D.C. in March is currently the most expensive (average of $290). 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
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Easton
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Bowie

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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.
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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$492Average$769FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$493Average$644FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$534Average$634FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$536Average$657FlexibilityNo cancel feeOn-time76%

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