District of Columbia

$324+ Cheap flights from Portugal to District of Columbia

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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — IAD
Mar 17 — Mar 241
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Cheap flight deals from Portugal to District of Columbia

Keep the following information in mind while searching for Portugal to District of Columbia flight deals. Data was last updated March 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$503
(American Airlines)

One-way from

$324
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$720

Good round-trip deal

$551 or less

Good one-way deal

$563 or less
Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. (WAS) flights.
From Portugal to District of Columbia
One-way flight from Portugal to District of Columbia
Highest demand for flights based on searches. 16% potential increase in price ($135 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from Portugal to District of Columbia.
Price to beat on a one-way flight from Portugal to District of Columbia.

Find flight deals from Portugal to District of Columbia

Cheapest flights from Portugal to District of Columbia
Explore the most affordable flight options available from Portugal to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2025.

This American Airlines deal was found by Cheapflights users on 3/11. 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.
Tue 4/158:25 amLIS - IAD
1 stop11h 35mAmerican Airlines
Wed 4/2310:40 pmIAD - LIS
1 stop19h 30mAmerican Airlines
Deal found 3/11$503
This Priceline deal was found by Cheapflights users on 3/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/158:25 amLIS - IAD
1 stop11h 35mMultiple Airlines
Sun 4/2010:40 pmIAD - LIS
1 stop12h 40mMultiple Airlines
Deal found 3/11$504
This Expedia deal was found by Cheapflights users on 3/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/136:35 amLIS - IAD
1 stop13h 25mBritish Airways
Sat 4/1910:45 pmIAD - LIS
1 stop30h 20mBritish Airways
Deal found 3/12$506
This British Airways deal was found by Cheapflights users on 3/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/88:35 pmOPO - IAD
1 stop23h 25mMultiple Airlines
Tue 5/137:25 pmIAD - OPO
1 stop19h 05mMultiple Airlines
Deal found 3/11$513
This American Airlines deal was found by Cheapflights users on 3/11. 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.
Sun 4/138:15 amOPO - IAD
1 stop11h 45mAmerican Airlines
Sat 4/264:35 pmIAD - OPO
1 stop10h 00mAmerican Airlines
Deal found 3/11$519
This Delta deal was found by Cheapflights users on 3/12. 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 3/205:00 amLIS - IAD
1 stop15h 45mDelta
Thu 4/38:21 pmIAD - LIS
2 stops16h 29mDelta
Deal found 3/12$521
This Delta deal was found by Cheapflights users on 3/12. 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 3/205:00 amLIS - DCA
2 stops17h 00mDelta
Thu 4/312:10 pmDCA - LIS
2 stops17h 45mDelta
Deal found 3/12$533
This KLM deal was found by Cheapflights users on 3/12. 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.
Sat 4/127:30 pmLIS - IAD
1 stop25h 05mKLM
Sun 4/205:25 pmIAD - LIS
1 stop16h 10mKLM
Deal found 3/12$534
This American Airlines deal was found by Cheapflights users on 3/11. 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 3/2010:55 amLIS - DCA
1 stop23h 50mAmerican Airlines
Thu 4/312:37 pmDCA - LIS
2 stops14h 08mAmerican Airlines
Deal found 3/11$534
This British Airways deal was found by Cheapflights users on 3/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/87:30 pmOPO - DCA
2 stops32h 06mBritish Airways
Tue 5/1312:35 pmDCA - OPO
2 stops25h 55mBritish Airways
Deal found 3/11$537
This British Airways deal was found by Cheapflights users on 3/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/249:55 amOPO - IAD
1 stop15h 15mBritish Airways
Sat 5/1010:45 pmIAD - OPO
1 stop16h 45mBritish Airways
Deal found 3/12$542
This United Airlines deal was found by Cheapflights users on 3/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:00 amOPO - IAD
2 stops32h 39mUnited Airlines
Tue 5/139:00 amIAD - OPO
2 stops21h 15mUnited Airlines
Deal found 3/11$545

Find flights from Portugal to District of Columbia within your budget

Customize your flight search to find flights from Portugal to District of Columbia 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 March 12, 2025.

Fly from

Portugal

Fly to

District of Columbia

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 4/15

8:25 am-3:00 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 4/23

10:40 pm-11:10 pm

1 stop19h 30m

$503

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 4/15

8:25 am-3:00 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 4/20

10:40 pm-4:20 pm

1 stop12h 40m

$504

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 4/13

6:35 am-3:00 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Sat 4/19

10:45 pm-10:05 am

1 stop30h 20m

$506

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 5/8

8:35 pm-3:00 pm

1 stop23h 25m

Washington, D.C. Dulles Intl

Tue 5/13

7:25 pm-7:30 pm

1 stop19h 05m

$513

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 4/13

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Sat 4/26

4:35 pm-7:35 am

1 stop10h 00m

$519

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 4/12

7:30 pm-3:35 pm

1 stop25h 05m

Washington, D.C. Dulles Intl

Sun 4/20

5:25 pm-2:35 pm

1 stop16h 10m

$534

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 5/22

11:40 am-10:45 pm

2 stops16h 05m

Washington, D.C. Reagan-National

Mon 6/16

11:00 am-8:00 am

1 stop16h 00m

$535

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 5/8

7:30 pm-10:36 pm

2 stops32h 06m

Washington, D.C. Reagan-National

Tue 5/13

12:35 pm-7:30 pm

2 stops25h 55m

$537

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 4/24

9:55 am-8:10 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Sat 5/10

10:45 pm-8:30 pm

1 stop16h 45m

$542

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 4/15

5:00 am-4:39 pm

2 stops16h 39m

Washington, D.C. Dulles Intl

Sun 4/20

5:25 pm-10:55 am

1 stop12h 30m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 60 results
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Best time to book a flight from Portugal to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia 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.

Travel insights for flights from Portugal to District of Columbia

Get recent, data-driven insights about flights from Portugal to District of Columbia including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Portugal to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Portugal to District of Columbia (average of $309). Flying from Portugal to District of Columbia in June is currently the most expensive (average of $388). 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 DC?

Find hourly flight availability from Portugal to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 12, 2025.

When flying from Portugal to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Portugal to District of Columbia

Explore weekly flight availability from Portugal to District of Columbia. 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 March 12, 2025.

The most flights from PT0 to USDC are scheduled on a Monday (5 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 2.6 in.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to District of Columbia, 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).

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated March 12, 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Portugal to District of Columbia by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very good
8.0
Very good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Portugal to District of Columbia. 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 District of Columbia one-way?

    The cheapest airlines for a one-way flight from Portugal to District of Columbia are TAP AIR PORTUGAL ($350), Royal Air Maroc ($366), and Aer Lingus ($434).

  • Can I find deals for flights from Portugal to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Portugal to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to District of Columbia?

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

  • Can I find deals for business class flights from Portugal to District of Columbia?

    Yes. Cheapflights offers flight deals from Portugal to District of Columbia 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 District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Portugal to District of Columbia (average of $309). Flying from Portugal to District of Columbia in June is currently the most expensive (average of $388). 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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Alternative routes for Portugal to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Portugal to District of Columbia

Discover the top 3 airlines that operate flights from Portugal to District of Columbia. 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 March 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$480Average$772FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$536Average$779FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$543Average$683FlexibilityNo cancel feeOn-time69%
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