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$394+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LIS
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
1 adult, Economy
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Cheap 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 marzo 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$655
(United)

One-way from

$394
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$776
Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.
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From Washington, D.C. Reagan-National to Portugal
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One-way flight from Washington, D.C. Reagan-National to Portugal
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Highest demand for flights based on searches. 0% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 marzo 25, 2025.

This United deal was found by Cheapflights users on 3/24. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/17:00 pmDCA - OPO
1 stop30h 55mMultiple Airlines
dom. 8/2411:20 amOPO - DCA
1 stop27h 58mMultiple Airlines
Deal found 3/24$655
This Air Canada deal was found by Cheapflights users on 3/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/18:40 pmDCA - OPO
2 stops31h 55mAir Canada
dom. 8/2411:20 amOPO - DCA
1 stop27h 58mAir Canada
Deal found 3/24$668
This United deal was found by Cheapflights users on 3/24. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/134:30 pmDCA - OPO
1 stop12h 00mUnited Airlines
mié. 9/109:35 amOPO - DCA
1 stop11h 48mUnited Airlines
Deal found 3/24$672
This Mytrip deal was found by Cheapflights users on 3/24. 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.
mié. 5/286:59 amDCA - LIS
1 stop18h 51mMultiple Airlines
mar. 6/38:15 amLIS - DCA
3 stops32h 46mMultiple Airlines
Deal found 3/24$680
This American Airlines deal was found by Cheapflights users on 3/24. 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.
vie. 8/12:54 pmDCA - OPO
2 stops15h 46mAmerican Airlines
lun. 8/258:15 amOPO - DCA
2 stops16h 00mAmerican Airlines
Deal found 3/24$691
This Delta deal was found by Cheapflights users on 3/24. 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.
mar. 7/14:56 pmDCA - OPO
2 stops17h 34mDelta
mar. 7/89:20 amOPO - DCA
2 stops19h 10mDelta
Deal found 3/24$716
This CheapOair deal was found by Cheapflights users on 3/23. 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.
jue. 5/812:35 pmDCA - OPO
2 stops26h 45mBritish Airways
sáb. 5/178:15 amOPO - DCA
2 stops19h 21mBritish Airways
Deal found 3/23$718
This United Airlines deal was found by Cheapflights users on 3/24. 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.
mar. 11/46:00 amDCA - LIS
1 stop22h 20mUnited Airlines
jue. 11/1311:00 amLIS - DCA
1 stop33h 19mUnited Airlines
Deal found 3/24$727
This Mytrip deal was found by Cheapflights users on 3/23. 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.
jue. 5/86:00 amDCA - FAO
2 stops30h 40mMultiple Airlines
jue. 5/157:40 pmFAO - DCA
2 stops31h 13mMultiple Airlines
Deal found 3/23$733
This KLM deal was found by Cheapflights users on 3/24. 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.
mié. 10/293:30 pmDCA - LIS
1 stop13h 30mKLM
vie. 11/710:00 amLIS - DCA
1 stop13h 12mKLM
Deal found 3/24$738
This Air Canada deal was found by Cheapflights users on 3/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/36:59 amDCA - LIS
1 stop21h 21mAir Canada
vie. 11/1411:00 amLIS - DCA
1 stop12h 07mAir Canada
Deal found 3/24$739
This Delta deal was found by Cheapflights users on 3/24. 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.
mié. 10/293:30 pmDCA - LIS
1 stop13h 30mDelta
jue. 11/610:00 amLIS - DCA
1 stop13h 12mDelta
Deal found 3/24$741

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 marzo 25, 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

vie. 8/1

7:00 pm-6:55 am

1 stop30h 55m

Porto

dom. 8/24

11:20 am-10:18 am

1 stop27h 58m

$655

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

vie. 8/1

8:40 pm-9:35 am

2 stops31h 55m

Porto

dom. 8/24

11:20 am-10:18 am

1 stop27h 58m

$668

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mié. 8/13

4:30 pm-9:30 am

1 stop12h 00m

Porto

mié. 9/10

9:35 am-4:23 pm

1 stop11h 48m

$672

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

vie. 8/1

2:54 pm-11:40 am

2 stops15h 46m

Porto

lun. 8/25

8:15 am-7:15 pm

2 stops16h 00m

$691

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

lun. 5/12

6:00 am-6:40 pm

2 stops31h 40m

Lisbon Humberto Delgado

mié. 5/21

8:05 pm-9:53 pm

2 stops30h 48m

$708

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 7/1

4:56 pm-3:30 pm

2 stops17h 34m

Porto

mar. 7/8

9:20 am-11:30 pm

2 stops19h 10m

$716

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

jue. 5/8

12:35 pm-8:20 pm

2 stops26h 45m

Porto

sáb. 5/17

8:15 am-10:36 pm

2 stops19h 21m

$718

Washington, D.C.Faro

DCA - FAO

DCAFAO

Washington, D.C. Reagan-National

jue. 5/8

6:00 am-5:40 pm

2 stops30h 40m

Faro

jue. 5/15

7:40 pm-9:53 pm

2 stops31h 13m

$733

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

dom. 4/20

6:25 am-8:00 am

1 stop20h 35m

Lisbon Humberto Delgado

mié. 4/30

12:45 pm-10:04 pm

1 stop14h 19m

$778

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

mié. 5/7

11:10 am-8:00 am

1 stop15h 50m

Lisbon Humberto Delgado

mié. 5/14

10:00 am-6:07 pm

1 stop13h 07m

$800

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Portugal (average of $612). Flying from Washington, D.C. Reagan-National Airport to Portugal in June is currently the most expensive (average of $1,219). 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 marzo 25, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Portugal as you normally would.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 marzo 25, 2025.
Get a feel of what it's like to fly with Delta, KLM and LOT from Washington, D.C. to Portugal 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.
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,318 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
LOT
7.6
Good
1,061 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Cathay Pacific
7.5
Good
833 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,422 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Portugal one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Reagan-National Airport to Portugal are Air Canada ($472), Scandinavian Airlines ($487), and United Airlines ($492).

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Portugal (average of $612). Flying from Washington, D.C. Reagan-National Airport to Portugal in June is currently the most expensive (average of $1,219). 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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Top 7 airlines flying from Reagan-National to Portugal

Discover the top 7 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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$512Average$1,101FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$562Average$1,202FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$567Average$1,212FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$592Average$1,004FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$619Average$1,029FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$942Average$1,101FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$968Average$968FlexibilityNo cancel feeOn-time76%
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