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$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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LIS
abr. 20 — abr. 271
dom. 4/20
dom. 4/27
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 abril 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$630
(United)

One-way from

$375
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$885
Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lisbon Humberto Delgado flights.
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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. 1% potential increase in price ($11 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 April 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 abril 15, 2025.

This United deal was found by Cheapflights users on 4/14. 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.
lun. 8/187:00 amDCA - OPO
1 stop21h 45mMultiple Airlines
jue. 8/2812:10 pmOPO - DCA
1 stop32h 38mMultiple Airlines
Deal found 4/14$630
This United Airlines deal was found by Cheapflights users on 4/14. 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.
lun. 9/159:40 amDCA - OPO
1 stop18h 55mUnited Airlines
mié. 12/1712:30 pmOPO - DCA
2 stops26h 47mUnited Airlines
Deal found 4/14$634
This Delta deal was found by Cheapflights users on 4/14. 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. 9/165:45 pmDCA - OPO
2 stops16h 45mDelta
mié. 12/1711:45 amOPO - DCA
2 stops27h 37mDelta
Deal found 4/14$636
This Air Canada deal was found by Cheapflights users on 4/14. 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.
mié. 8/2012:55 pmDCA - OPO
2 stops15h 25mAir Canada
mar. 8/2612:50 pmOPO - DCA
1 stop13h 58mAir Canada
Deal found 4/14$637
This American Airlines deal was found by Cheapflights users on 4/15. 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.
dom. 5/1112:35 pmDCA - OPO
2 stops14h 00mAmerican Airlines
dom. 5/258:15 amOPO - DCA
2 stops15h 52mAmerican Airlines
Deal found 4/15$657
This Orbitz deal was found by Cheapflights users on 4/15. 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.
sáb. 6/72:54 pmDCA - OPO
2 stops24h 41mBritish Airways
vie. 11/218:20 amOPO - DCA
2 stops18h 40mBritish Airways
Deal found 4/15$684
This Mytrip deal was found by Cheapflights users on 4/13. 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.
mar. 6/36:59 amDCA - LIS
2 stops18h 31mMultiple Airlines
mar. 6/178:15 amLIS - DCA
2 stops19h 13mMultiple Airlines
Deal found 4/13$687
This Scandinavian Airlines deal was found by Cheapflights users on 4/13. 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.
lun. 10/2011:00 amDCA - LIS
2 stops28h 40mScandinavian Airlines
mié. 11/197:05 amLIS - DCA
2 stops20h 14mScandinavian Airlines
Deal found 4/13$702
This KLM deal was found by Cheapflights users on 4/14. 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.
lun. 6/237:55 pmDCA - OPO
2 stops14h 40mKLM
mié. 7/26:25 amOPO - DCA
2 stops15h 08mKLM
Deal found 4/14$720
This Flysmarter deal was found by Cheapflights users on 4/14. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/61:15 pmDCA - OPO
1 stop15h 30mLufthansa
mié. 5/1412:35 pmOPO - DCA
1 stop14h 07mLufthansa
Deal found 4/14$729
This Mytrip deal was found by Cheapflights users on 4/15. 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.
mar. 5/279:40 amDCA - LIS
3 stops20h 25mAir Canada
mié. 6/412:50 pmLIS - DCA
1 stop11h 53mAir Canada
Deal found 4/15$798
This United Airlines deal was found by Cheapflights users on 4/14. 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.
mié. 8/137:00 pmDCA - PDL
1 stop9h 40mUnited Airlines
jue. 8/2111:00 amPDL - DCA
1 stop10h 23mUnited Airlines
Deal found 4/14$804

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 abril 15, 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

lun. 8/18

7:00 am-9:45 am

1 stop21h 45m

Porto

jue. 8/28

12:10 pm-3:48 pm

1 stop32h 38m

$630

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 9/15

9:40 am-9:35 am

1 stop18h 55m

Porto

mié. 12/17

12:30 pm-10:17 am

2 stops26h 47m

$634

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 9/16

5:45 pm-3:30 pm

2 stops16h 45m

Porto

mar. 12/16

11:45 am-10:22 am

2 stops27h 37m

$636

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mié. 8/20

12:55 pm-9:20 am

2 stops15h 25m

Porto

mar. 8/26

12:50 pm-9:48 pm

1 stop13h 58m

$637

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

dom. 5/11

12:35 pm-7:35 am

2 stops14h 00m

Porto

dom. 5/25

8:15 am-7:07 pm

2 stops15h 52m

$657

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

sáb. 6/7

2:54 pm-8:35 pm

2 stops24h 41m

Porto

vie. 11/21

8:20 am-10:00 pm

2 stops18h 40m

$684

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

mar. 6/3

6:59 am-6:30 am

2 stops18h 31m

Lisbon Humberto Delgado

mar. 6/17

8:15 am-10:28 pm

2 stops19h 13m

$687

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 6/23

7:55 pm-3:35 pm

2 stops14h 40m

Porto

mié. 7/2

6:25 am-4:33 pm

2 stops15h 08m

$720

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 5/6

1:15 pm-9:45 am

1 stop15h 30m

Porto

mié. 5/14

12:35 pm-9:42 pm

1 stop14h 07m

$729

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

lun. 9/15

11:00 am-10:05 pm

2 stops30h 05m

Lisbon Humberto Delgado

sáb. 9/27

7:15 am-10:19 pm

2 stops20h 04m

$793

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

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 $1,203). 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 abril 15, 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 abril 15, 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
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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
1,323 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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
1,065 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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.
United Airlines
7.4
Good
8,658 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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 Scandinavian Airlines ($414), American Airlines ($511), and British Airways ($522).

  • 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 $1,203). 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 abril 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$512Average$1,088FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$562Average$1,029FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$567Average$1,188FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$592Average$1,040FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$619Average$1,029FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$942Average$1,113FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$968Average$968FlexibilityNo cancel feeOn-time76%

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