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$237+ Cheap flights from Washington, D.C. (WAS) to Portugal

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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LIS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Portugal

Keep the following information in mind while searching for Washington, D.C. to Portugal flight deals. Data was last updated September 11, 2025.

Round-trip from

$367
(Booking.com)

One-way from

$237
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$878

Good round-trip deal

$620 or less

Good one-way deal

$293 or less
From Washington, D.C. (WAS) to Portugal
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One-way flight from Washington, D.C. (WAS) to Portugal
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Highest demand for flights based on searches. 2% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 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 Washington, D.C. (WAS) to Portugal.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Portugal.
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Find flight deals from Washington, D.C. to Portugal

Cheapest flights from Washington, D.C. to Portugal
Explore the most affordable flight options available from Washington, D.C. to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:50 pmBWI - LIS
1 stop20h 30mPLAY
Fri 10/179:20 pmLIS - BWI
1 stop25h 20mPLAY
Deal found 9/10$367
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.
Sun 10/56:50 pmBWI - LIS
1 stop20h 30mPLAY
Fri 10/109:20 pmLIS - BWI
1 stop25h 20mPLAY
Deal found 9/9$376
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:50 pmBWI - LIS
1 stop20h 30mPLAY
Fri 10/179:20 pmLIS - BWI
1 stop25h 20mPLAY
Deal found 9/10$386
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 9/256:50 pmBWI - LIS
1 stop20h 30mPLAY
Fri 10/109:20 pmLIS - BWI
1 stop25h 20mPLAY
Deal found 9/10$414
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:50 pmBWI - LIS
1 stop20h 30mPLAY
Mon 10/139:25 pmLIS - BWI
1 stop25h 15mPLAY
Deal found 9/9$442
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/191:51 pmBWI - OPO
2 stops15h 39mDelta
Tue 12/1611:10 amOPO - BWI
2 stops18h 17mDelta
Deal found 9/11$478
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:35 pmBWI - OPO
2 stops14h 55mDelta
Wed 11/196:00 amOPO - BWI
2 stops22h 49mDelta
Deal found 9/11$479
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:49 pmIAD - FAO
2 stops39h 31mScandinavian Airlines
Wed 12/310:35 amFAO - IAD
2 stops35h 40mScandinavian Airlines
Deal found 9/10$488
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:50 pmBWI - LIS
1 stop20h 30mPLAY
Mon 10/209:25 pmLIS - BWI
1 stop25h 15mPLAY
Deal found 9/11$512
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.
Sun 9/216:50 pmBWI - LIS
2 stops22h 10mMultiple Airlines
Wed 9/2410:10 pmLIS - BWI
3 stops24h 30mMultiple Airlines
Deal found 9/9$521
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:56 amBWI - OPO
2 stops19h 44mMultiple Airlines
Tue 12/166:00 amOPO - BWI
3 stops20h 19mMultiple Airlines
Deal found 9/11$522
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.
Fri 10/1710:20 pmIAD - FAO
1 stop20h 30mTAP AIR PORTUGAL
Sun 11/24:35 pmFAO - IAD
1 stop27h 40mTAP AIR PORTUGAL
Deal found 9/11$525

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Portugal 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 Washington, D.C. to Portugal that are best for you.

Fly from

Washington, D.C.

Fly to

Portugal

Route

Depart

Return

Price

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 11/19

1:51 pm-10:30 am

2 stops15h 39m

Porto

Tue 12/16

11:10 am-12:27 am

2 stops18h 17m

$478

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 11/12

2:35 pm-10:30 am

2 stops14h 55m

Porto

Wed 11/19

6:00 am-11:49 pm

2 stops22h 49m

$479

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 1/21

3:30 pm-10:30 am

2 stops14h 00m

Porto

Wed 2/11

6:00 am-10:59 pm

2 stops21h 59m

$479

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 11/19

10:56 am-11:40 am

2 stops19h 44m

Porto

Tue 12/16

6:00 am-9:19 pm

3 stops20h 19m

$522

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Wed 10/29

11:30 pm-3:45 pm

1 stop12h 15m

Faro

Tue 11/4

6:05 am-2:35 pm

1 stop13h 30m

$525

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Thu 10/23

1:00 pm-8:25 am

2 stops14h 25m

Porto

Tue 11/4

11:10 am-11:02 pm

2 stops16h 52m

$528

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 10/14

10:20 am-11:30 am

2 stops20h 10m

Porto

Thu 10/23

6:00 am-9:05 pm

2 stops20h 05m

$543

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 11/19

9:45 am-11:40 am

2 stops20h 55m

Porto

Sat 12/13

6:00 am-5:30 pm

2 stops16h 30m

$548

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Thu 11/27

7:49 pm-4:20 pm

2 stops39h 31m

Faro

Tue 12/2

10:50 am-5:15 pm

1 stop35h 25m

$551

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 10/14

9:45 am-7:00 pm

3 stops28h 15m

Porto

Tue 10/21

10:50 pm-9:05 pm

2 stops27h 15m

$557

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 Washington, D.C. to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Portugal (average of $612). Flying from Washington, D.C. to Portugal in June is currently the most expensive (average of $1,127). 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 WAS to PT?

Find hourly flight availability from Washington, D.C. to Portugal. 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.

It’s typically best to fly out from Washington, D.C. to Portugal in the morning. Doing so could potentially save you 9% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. to Portugal?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Portugal. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Portugal flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and Aer Lingus from Washington, D.C. to Portugal. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.2
Good
1,271 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
TAP AIR PORTUGAL
7.1
Good
1,977 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Royal Air Maroc
6.2
Okay
511 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Portugal. 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 Washington, D.C. to Portugal?

    Delta, TAP AIR PORTUGAL, and Air Canada can get you from Washington, D.C. to Portugal in just under 12h 15m. Your travel time can differ by up to 7h 55m. Washington, D.C. and Portugal are separated by a distance of 3688 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 Washington, D.C. to Portugal one-way?

    One-way options have recently been found by users for as low as $256 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include WorldTicket from $322 and United Airlines from $389 one-way.

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

    While some choose either Baltimore/Washington - Lisbon Humberto Delgado or Washington, D.C. Reagan-National - Lisbon Humberto Delgado, Washington, D.C. Dulles Intl - Lisbon Humberto Delgado is the most popular route from Washington, D.C. to Portugal.

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

    The top 3 most reliable airlines when flying from Washington, D.C. to Portugal are JetBlue (57%), Air Canada (55%) and United Airlines (55%).

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

    Looking for the cheapest flight from Washington, D.C. to Portugal? While on average our users pay $1,371, our data indicates the cheapest price to be $214. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $451.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to Portugal 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 Washington, D.C. to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Portugal (average of $612). Flying from Washington, D.C. to Portugal in June is currently the most expensive (average of $1,127). 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 Washington, D.C. to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington, D.C. to Portugal

Discover the top 10 airlines that operate flights from Washington, D.C. to Portugal. 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
PLAYCheapest$338Average$420FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$418Average$1,134FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$430Average$731FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$469Average$921FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$480Average$881FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$508Average$783FlexibilityNo cancel feeOn-time71%
IberiaCheapest$515Average$721FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$520Average$1,068FlexibilityNo cancel feeOn-time69%
Royal Air MarocCheapest$552Average$649FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$586Average$667FlexibilityNo cancel feeOn-time77%

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