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Portugal

$375+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LIS
May 9 — May 161
Sat 5/9
Sat 5/16
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 April 9, 2026.

This FlightHub deal was found by Cheapflights users on 4/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:30 pm
DCA
-
LIS
2 stops21h 05m
Scandinavian Airlines
Wed 9/164:25 pm
LIS
-
DCA
2 stops35h 47m
Scandinavian Airlines
Deal found 4/5$717
This FlightHub deal was found by Cheapflights users on 4/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:00 am
DCA
-
LIS
2 stops23h 35m
Multiple Airlines
Wed 9/97:15 am
LIS
-
DCA
2 stops19h 35m
Multiple Airlines
Deal found 4/6$722
This AirNGo deal was found by Cheapflights users on 4/5. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:00 pm
DCA
-
LIS
2 stops23h 05m
Scandinavian Airlines
Wed 12/97:00 am
LIS
-
DCA
2 stops19h 55m
Scandinavian Airlines
Deal found 4/5$727
This Justfly.com deal was found by Cheapflights users on 4/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:00 am
DCA
-
LIS
2 stops31h 00m
Multiple Airlines
Tue 9/229:15 pm
LIS
-
DCA
2 stops29h 35m
Multiple Airlines
Deal found 4/6$729
This FlightHub deal was found by Cheapflights users on 4/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:00 am
DCA
-
LIS
2 stops30h 05m
Scandinavian Airlines
Wed 9/164:25 pm
LIS
-
DCA
2 stops35h 47m
Scandinavian Airlines
Deal found 4/4$730
This CheapOair deal was found by Cheapflights users on 4/7. 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.
Tue 9/111:00 am
DCA
-
LIS
2 stops23h 35m
Multiple Airlines
Tue 9/1512:45 pm
LIS
-
DCA
2 stops39h 27m
Multiple Airlines
Deal found 4/7$735
This FlightHub deal was found by Cheapflights users on 4/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 am
DCA
-
LIS
2 stops28h 50m
Multiple Airlines
Mon 5/117:00 am
LIS
-
DCA
2 stops21h 24m
Multiple Airlines
Deal found 4/8$736
This FlightHub deal was found by Cheapflights users on 4/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:00 am
DCA
-
OPO
2 stops20h 50m
Air Canada
Wed 11/116:00 am
OPO
-
DCA
2 stops31h 57m
Air Canada
Deal found 4/6$745
This FlightHub deal was found by Cheapflights users on 4/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:00 am
DCA
-
LIS
2 stops23h 35m
Scandinavian Airlines
Tue 9/1512:10 pm
LIS
-
DCA
2 stops40h 02m
Scandinavian Airlines
Deal found 4/4$747
This United Airlines deal was found by Cheapflights users on 4/5. 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 11/184:30 pm
DCA
-
OPO
1 stop12h 00m
United Airlines
Fri 11/2712:35 pm
OPO
-
DCA
1 stop11h 58m
United Airlines
Deal found 4/5$750
This Scandinavian Airlines deal was found by Cheapflights users on 4/5. 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.
Tue 12/112:00 pm
DCA
-
LIS
2 stops23h 05m
Scandinavian Airlines
Thu 12/104:55 pm
LIS
-
DCA
2 stops35h 35m
Scandinavian Airlines
Deal found 4/5$751
This FlightHub deal was found by Cheapflights users on 4/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:00 am
DCA
-
LIS
2 stops28h 40m
Multiple Airlines
Wed 10/217:15 am
LIS
-
DCA
2 stops19h 40m
Multiple Airlines
Deal found 4/5$752

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 April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$717
(FlightHub)

One-way from

$375
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$871
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. 20% potential increase in price ($238 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 9, 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

Sun 7/26

11:00 am-10:25 am

1 stop18h 25m

Porto

Fri 8/21

11:25 am-11:12 pm

2 stops16h 47m

$833

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 7/26

11:00 am-10:25 am

1 stop18h 25m

Porto

Fri 8/21

12:45 pm-11:12 pm

1 stop15h 27m

$840

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 9/20

5:00 pm-10:25 am

1 stop12h 25m

Porto

Mon 10/12

12:15 pm-11:04 pm

1 stop15h 49m

$870

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 4/26

5:00 pm-3:25 pm

2 stops17h 25m

Porto

Fri 5/8

5:00 am-4:33 pm

2 stops16h 33m

$909

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Fri 9/11

4:30 pm-6:55 am

1 stop9h 25m

Porto

Tue 9/22

9:00 am-3:53 pm

1 stop11h 53m

$971

Washington, D.C.Pico Island

DCA - PIX

DCAPIX

Washington, D.C. Reagan-National

Thu 4/30

9:00 pm-9:10 am

2 stops32h 10m

Pico Island

Tue 5/5

11:40 am-7:59 am

2 stops24h 19m

$976

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 4/26

6:00 pm-9:45 am

1 stop10h 45m

Porto

Thu 5/7

12:35 pm-7:31 pm

1 stop11h 56m

$991

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 9/6

3:05 pm-6:55 am

1 stop10h 50m

Porto

Sat 9/19

9:00 am-3:53 pm

1 stop11h 53m

$1,011

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 7/13

5:00 pm-10:30 am

1 stop12h 30m

Porto

Tue 7/28

12:25 pm-10:59 pm

1 stop15h 34m

$1,022

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sat 8/29

5:00 pm-10:20 am

1 stop12h 20m

Porto

Mon 9/7

5:00 am-6:11 pm

2 stops18h 11m

$1,024

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/6

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 April 9, 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
9,554 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,554 reviews
United Airlines
7.4
Good
9,554 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 $971, KLM can have you in Portugal from Washington, D.C. Reagan-National Airport in 9h 25m. 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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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 April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$520Average$1,075FlexibilityNo cancel feeOn-time69%

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