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Portugal

$340+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LIS
Jun 22 — Jun 291
Mon 6/22
Mon 6/29
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 May 23, 2026.

This Mytrip deal was found by Cheapflights users on 5/21. 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.
Mon 7/2012:40 pm
DCA
-
PDL
3 stops31h 05m
Multiple Airlines
Tue 7/2810:30 am
PDL
-
DCA
1 stop16h 01m
Multiple Airlines
Deal found 5/21$792
This Mytrip deal was found by Cheapflights users on 5/18. 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.
Mon 6/86:00 am
DCA
-
PDL
2 stops20h 40m
Multiple Airlines
Mon 6/159:35 am
PDL
-
DCA
2 stops30h 26m
Multiple Airlines
Deal found 5/18$793
This KLM deal was found by Cheapflights users on 5/21. 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.
Tue 11/105:00 pm
DCA
-
FAO
2 stops15h 50m
KLM
Wed 11/182:40 pm
FAO
-
DCA
2 stops30h 51m
KLM
Deal found 5/21$834
This Mytrip deal was found by Cheapflights users on 5/22. 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 6/76:00 am
DCA
-
PDL
3 stops24h 20m
Multiple Airlines
Sat 6/1311:30 am
PDL
-
DCA
1 stop14h 58m
Multiple Airlines
Deal found 5/22$839
This Mytrip deal was found by Cheapflights users on 5/22. 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 7/146:00 am
DCA
-
FAO
3 stops33h 55m
Multiple Airlines
Wed 7/226:10 pm
FAO
-
DCA
3 stops32h 38m
Multiple Airlines
Deal found 5/22$851
This KLM deal was found by Cheapflights users on 5/22. 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.
Tue 9/227:30 pm
DCA
-
FAO
2 stops19h 00m
KLM
Tue 9/2910:00 am
FAO
-
DCA
2 stops18h 12m
KLM
Deal found 5/22$862
This Delta deal was found by Cheapflights users on 5/18. 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.
Sun 7/2611:00 am
DCA
-
OPO
1 stop18h 25m
Delta
Fri 8/215:00 am
OPO
-
DCA
2 stops16h 59m
Delta
Deal found 5/18$863
This Scandinavian Airlines deal was found by Cheapflights users on 5/21. 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 11/2712:00 pm
DCA
-
FNC
2 stops22h 35m
Scandinavian Airlines
Tue 12/13:00 pm
FNC
-
DCA
2 stops37h 04m
Scandinavian Airlines
Deal found 5/21$874
This Delta deal was found by Cheapflights users on 5/20. 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 10/811:00 am
DCA
-
OPO
2 stops16h 30m
Delta
Thu 10/151:25 pm
OPO
-
DCA
1 stop14h 39m
Delta
Deal found 5/20$875
This Orbitz deal was found by Cheapflights users on 5/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:55 pm
DCA
-
OPO
2 stops15h 50m
Iberia
Mon 10/268:40 pm
OPO
-
DCA
2 stops29h 35m
Iberia
Deal found 5/20$876
This Mytrip deal was found by Cheapflights users on 5/20. 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 8/166:00 am
DCA
-
PDL
2 stops22h 10m
Multiple Airlines
Sat 8/2211:30 am
PDL
-
DCA
2 stops28h 30m
Multiple Airlines
Deal found 5/20$878
This Mytrip deal was found by Cheapflights users on 5/18. 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.
Mon 6/156:00 am
DCA
-
OPO
2 stops24h 45m
Multiple Airlines
Mon 6/221:30 pm
OPO
-
DCA
2 stops25h 48m
Multiple Airlines
Deal found 5/18$878

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 May 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$792
(Mytrip)

One-way from

$340
(KLM)

Popular in

June

Cheapest in

January

Average price

$1,233
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. 24% potential increase in price ($304 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 23, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 9/8

1:30 pm-10:55 am

2 stops16h 25m

Porto

Tue 9/15

1:05 pm-10:59 pm

1 stop14h 54m

$906

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 8/3

5:00 pm-10:30 am

1 stop12h 30m

Porto

Tue 8/11

5:00 am-5:54 pm

2 stops17h 54m

$920

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 7/14

11:00 am-10:30 am

1 stop18h 30m

Porto

Tue 7/28

5:00 am-5:49 pm

2 stops17h 49m

$920

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Thu 9/17

11:00 am-10:30 am

1 stop18h 30m

Porto

Mon 9/21

5:00 am-7:09 pm

2 stops19h 09m

$923

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 7/7

11:00 am-10:30 am

1 stop18h 30m

Porto

Wed 7/15

12:40 pm-10:59 pm

1 stop15h 19m

$928
Quickest round-trip

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 7/20

5:40 pm-10:30 am

1 stop11h 50m

Porto

Wed 8/5

12:40 pm-8:59 pm

1 stop13h 19m

$928

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sat 10/10

2:00 pm-10:20 am

1 stop15h 20m

Porto

Mon 10/12

12:15 pm-10:54 pm

1 stop15h 39m

$931

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Fri 9/18

6:00 am-10:30 am

1 stop23h 30m

Porto

Sat 9/26

6:10 am-11:12 pm

2 stops22h 02m

$937

Washington, D.C.Faro

DCA - FAO

DCAFAO

Washington, D.C. Reagan-National

Mon 8/3

5:55 pm-9:20 am

1 stop10h 25m

Faro

Thu 8/13

11:40 am-7:49 am

1 stop25h 09m

$952

Washington, D.C.Faro

DCA - FAO

DCAFAO

Washington, D.C. Reagan-National

Sun 7/5

5:55 pm-9:55 am

1 stop11h 00m

Faro

Tue 7/21

11:40 am-3:23 pm

1 stop32h 43m

$952

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

Showing 1-10 of 60 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 May 23, 2026.
Get a feel of what it's like to fly with United Airlines 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
9,751 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,751 reviews
United Airlines
7.4
Good
9,751 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 $876, Delta can have you in Portugal from Washington, D.C. Reagan-National Airport in 15h 50m. There are 3520 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 - Ponta Delgada Nordela.

  • 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.

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 Keflavik Intl flights
Baltimore to Lisbon flights
Baltimore to Frankfurt flights
Baltimore to Barcelona-El Prat flights
Reagan-National to Lisbon flights
Dulles Intl to Florence flights

Top airline flying from Reagan-National to Portugal

Discover the top airline 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 May 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$520Average$872FlexibilityNo cancel feeOn-time69%

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