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Portugal

$308+ Cheap flights from Reagan-National (DCA) 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LIS
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheap flight deals from Reagan-National to Portugal

Cheapest flights from Reagan-National to Portugal
Explore the most affordable flight options available from Reagan-National to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 10, 2025.

This Delta deal was found by Cheapflights users on 12/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:13 amDCA - OPO
2 stops18h 17mDelta
Wed 12/176:00 amOPO - DCA
2 stops16h 59mDelta
Deal found 12/9$798
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:54 pmDCA - OPO
2 stops20h 21mBritish Airways
Thu 12/188:20 amOPO - DCA
2 stops18h 40mBritish Airways
Deal found 12/10$880
This Iberia deal was found by Cheapflights users on 12/8. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/132:02 pmDCA - OPO
2 stops12h 38mIberia
Mon 2/28:20 amOPO - DCA
2 stops15h 36mIberia
Deal found 12/8$910
This oojo deal was found by Cheapflights users on 12/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:49 pmDCA - PDL
1 stop29h 31mMultiple Airlines
Thu 12/185:45 pmPDL - DCA
1 stop24h 15mMultiple Airlines
Deal found 12/10$925
This oojo deal was found by Cheapflights users on 12/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/137:55 pmDCA - OPO
2 stops34h 55mMultiple Airlines
Mon 2/212:40 pmOPO - DCA
2 stops24h 56mMultiple Airlines
Deal found 12/10$1,026
This oojo deal was found by Cheapflights users on 12/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:05 amDCA - OPO
1 stop19h 50mTAP AIR PORTUGAL
Wed 12/176:00 pmOPO - DCA
2 stops43h 28mTAP AIR PORTUGAL
Deal found 12/9$1,071
This Mytrip deal was found by Cheapflights users on 12/8. 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.
Wed 12/244:10 pmDCA - LIS
2 stops24h 05mMultiple Airlines
Mon 1/199:25 amLIS - DCA
3 stops31h 54mMultiple Airlines
Deal found 12/8$1,073
This Gurufare deal was found by Cheapflights users on 12/9. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:45 pmDCA - LIS
1 stop10h 50mMultiple Airlines
Mon 2/211:40 amLIS - DCA
1 stop12h 09mMultiple Airlines
Deal found 12/9$1,092
This Scandinavian Airlines deal was found by Cheapflights users on 12/9. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amDCA - LIS
2 stops33h 35mScandinavian Airlines
Mon 1/194:55 pmLIS - DCA
2 stops34h 53mScandinavian Airlines
Deal found 12/9$1,098
This Scandinavian Airlines deal was found by Cheapflights users on 12/9. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amDCA - LIS
2 stops33h 35mScandinavian Airlines
Sat 1/176:55 pmLIS - DCA
2 stops32h 53mScandinavian Airlines
Deal found 12/9$1,128
This oojo deal was found by Cheapflights users on 12/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:49 pmDCA - FNC
2 stops33h 16mMultiple Airlines
Thu 12/1811:55 amFNC - DCA
2 stops27h 40mMultiple Airlines
Deal found 12/10$1,132
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Tue 12/164:10 pmDCA - LIS
2 stops22h 00mMultiple Airlines
Mon 12/229:25 amLIS - DCA
2 stops28h 30mMultiple Airlines
Deal found 12/9$1,140

Find flight deals from Reagan-National to Portugal

Keep the following information in mind while searching for Reagan-National to Portugal flight deals. Data was last updated December 10, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$486
(United Airlines)

One-way from

$308
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,391
Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lisbon Humberto Delgado flights.
Search Deals
From Washington, D.C. Reagan-National to Portugal
Search Deals
One-way flight from Washington, D.C. Reagan-National to Portugal
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 December 10, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Portugal that are best for you.

Fly from

Reagan-National

Fly to

Portugal

Route

Depart

Return

Price

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 2/16

4:15 pm-12:05 pm

2 stops14h 50m

Porto

Mon 2/23

7:20 pm-9:58 pm

2 stops31h 38m

$488

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 1/12

1:45 pm-3:25 pm

2 stops20h 40m

Porto

Mon 1/26

11:15 am-4:19 pm

2 stops34h 04m

$489

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 2/24

12:20 pm-10:30 am

2 stops17h 10m

Porto

Tue 3/3

5:00 am-6:59 pm

2 stops18h 59m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 2/24

12:59 pm-10:30 am

2 stops16h 31m

Porto

Tue 3/3

5:00 am-5:04 pm

2 stops17h 04m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 1/19

10:25 am-10:30 am

2 stops19h 05m

Porto

Mon 1/26

11:15 am-4:29 pm

2 stops34h 14m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 1/21

1:40 pm-10:30 am

2 stops15h 50m

Porto

Wed 1/28

5:00 am-4:29 pm

2 stops16h 29m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 2/24

4:10 pm-9:30 am

1 stop12h 20m

Porto

Tue 3/3

12:35 pm-7:35 pm

1 stop12h 00m

$495

Washington, D.C.Faro

DCA - FAO

DCAFAO

Washington, D.C. Reagan-National

Mon 1/19

11:10 am-10:50 am

2 stops18h 40m

Faro

Tue 2/3

11:40 am-10:48 pm

2 stops40h 08m

$520

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 2/11

5:45 pm-4:05 pm

2 stops17h 20m

Porto

Tue 2/17

5:30 pm-4:19 pm

2 stops27h 49m

$530

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

Sun 2/15

10:25 am-3:40 pm

2 stops24h 15m

Lisbon Humberto Delgado

Mon 2/23

6:45 am-7:56 pm

2 stops18h 11m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 60 results
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Best time to book a flight from Reagan-National to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Reagan-National 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. Reagan-National Airport to Portugal

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

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Portugal (average of $535). Flying from Washington, D.C. Reagan-National Airport to Portugal in June is currently the most expensive (average of $1,303). 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 DCA to PT?

Find hourly flight availability from Reagan-National 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 December 10, 2025.

It’s typically best to fly out from Washington, D.C. Reagan-National Airport to Portugal in the morning. Doing so could potentially save you 33% 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. Reagan-National Airport to Portugal?

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

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Portugal flight should consider departing on Sunday afternoons when fares are most often at their lowest. Tuesday at noon 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 December 10, 2025.
Get a feel of what it's like to fly with United Airlines and TAP AIR PORTUGAL from Washington, D.C. Reagan-National Airport to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
TAP AIR PORTUGAL
7.1
Good
2,086 reviews
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National Airport to Portugal?

    For as low as $520, Delta can have you in Portugal from Washington, D.C. Reagan-National Airport in 18h 40m. There are 3669 mi between Washington, D.C. Reagan-National Airport and Portugal. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The most popular route from Washington, D.C. Reagan-National Airport to Portugal is Washington, D.C. Reagan-National - Lisbon Humberto Delgado. You may also consider Washington, D.C. Reagan-National - Porto or Washington, D.C. Reagan-National - Funchal Madeira.

  • Can I find deals for flights from Reagan-National to Portugal that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Portugal?

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

  • Can I find deals for business class flights from Reagan-National to Portugal?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Portugal?

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Portugal (average of $535). Flying from Washington, D.C. Reagan-National Airport to Portugal in June is currently the most expensive (average of $1,303). 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 Reagan-National to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Reagan-National to Malpensa flights

Top 2 airlines flying from Reagan-National to Portugal

Discover the top 2 airlines that operate flights from Reagan-National 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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$520Average$1,194FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$592Average$948FlexibilityNo cancel feeOn-timeN/A

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