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Reagan-National

$217+ Cheap flights from Harlingen (HRL) to Reagan-National (DCA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — DCA
Aug 10 — Aug 171
Mon 8/10
Mon 8/17
1 adult, Economy
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Cheap flight deals from Harlingen to Reagan-National

Cheapest flights from Harlingen to Reagan-National
Explore the most affordable flight options available from Harlingen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2026.

This United Airlines deal was found by Cheapflights users on 7/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:20 am
HRL
-
DCA
1 stop5h 37m
United Airlines
Tue 8/1110:58 am
DCA
-
HRL
1 stop6h 01m
United Airlines
Deal found 7/7$217
This Southwest deal was found by Cheapflights users on 7/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:30 am
HRL
-
DCA
1 stop11h 40m
Southwest
Sun 10/257:00 am
DCA
-
HRL
1 stop6h 00m
Southwest
Deal found 7/10$279
This Southwest deal was found by Cheapflights users on 7/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:25 pm
HRL
-
DCA
1 stop4h 55m
Southwest
Tue 8/1112:55 pm
DCA
-
HRL
2 stops8h 15m
Southwest
Deal found 7/7$288
This Southwest deal was found by Cheapflights users on 7/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:50 pm
HRL
-
DCA
1 stop8h 05m
Southwest
Fri 10/236:55 pm
DCA
-
HRL
1 stop5h 40m
Southwest
Deal found 7/7$294
This United Airlines deal was found by Cheapflights users on 7/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:16 pm
HRL
-
DCA
1 stop5h 34m
United Airlines
Wed 12/98:15 am
DCA
-
HRL
1 stop8h 19m
United Airlines
Deal found 7/7$307
This Southwest deal was found by Cheapflights users on 7/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/211:55 pm
HRL
-
DCA
1 stop6h 00m
Southwest
Sun 8/236:00 am
DCA
-
HRL
1 stop9h 35m
Southwest
Deal found 7/10$331
This Southwest deal was found by Cheapflights users on 7/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:25 pm
HRL
-
DCA
1 stop6h 50m
Southwest
Sun 8/235:00 pm
DCA
-
HRL
1 stop7h 10m
Southwest
Deal found 7/7$332
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:18 pm
HRL
-
DCA
1 stop5h 41m
United Airlines
Mon 8/244:38 pm
DCA
-
HRL
1 stop6h 14m
United Airlines
Deal found 7/10$335

Find flight deals from Harlingen to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to Reagan-National (DCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(United Airlines)

Popular in

May

Cheapest in

January

Average price

$453
Provider with most accurate pricing for Harlingen Valley Intl-Washington, D.C. Reagan-National flight deals.
Search Deals
Provider most trusted by Cheapflights users for Harlingen Valley Intl-Washington, D.C. Reagan-National flights.
Search Deals
From Harlingen Valley Intl to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Reagan-National 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 July 11, 2026.
Use the filters below to find and compare flights from Harlingen to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 8/4

1:45 pm-10:20 pm

2 stops7h 35m

Washington, D.C. Reagan-National

Tue 8/11

12:55 pm-8:10 pm

2 stops8h 15m

$293
Quickest round-trip

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Mon 10/19

1:50 pm-10:55 pm

1 stop8h 05m

Washington, D.C. Reagan-National

Fri 10/23

6:55 pm-11:35 pm

1 stop5h 40m

$294

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 12/8

5:16 pm-11:50 pm

1 stop5h 34m

Washington, D.C. Reagan-National

Wed 12/9

8:15 am-3:34 pm

1 stop8h 19m

$307

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Fri 8/21

1:55 pm-8:55 pm

1 stop6h 00m

Washington, D.C. Reagan-National

Sun 8/23

6:00 am-2:35 pm

1 stop9h 35m

$331

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Fri 7/24

1:15 pm-11:55 pm

1 stop9h 40m

Washington, D.C. Reagan-National

Tue 7/28

6:10 am-1:30 pm

2 stops8h 20m

$410

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 7/25

11:25 am-9:40 pm

1 stop9h 15m

Washington, D.C. Reagan-National

Wed 7/29

6:10 am-12:05 pm

2 stops6h 55m

$435

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Wed 7/22

10:50 am-8:55 pm

1 stop9h 05m

Washington, D.C. Reagan-National

Sat 7/25

9:20 am-4:30 pm

1 stop8h 10m

$453
Cheapest one-way
Quickest one-way

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sun 9/20

5:05 am-11:54 am

1 stop5h 49m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Sorted by cheapest first

Compare providers for flights from Harlingen to Reagan-National

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Harlingen to Reagan-National in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Harlingen-Washington, D.C. Reagan-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harlingen-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harlingen-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Harlingen-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Harlingen-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Harlingen to Reagan-National

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

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. 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 Reagan-National. Reviews last updated July 11, 2026.
Get a feel of what it's like to fly with Southwest and United Airlines from Harlingen to Washington, D.C. Reagan-National Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,248 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

7.9

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
7.9
Good
4,248 reviews
Southwest
7.9
Good
4,248 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

7.9

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
United Airlines
7.4
Good
9,976 reviews
Southwest
7.9
Good
4,248 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

7.9

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

Find useful and relevant information for your journey from Harlingen to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Harlingen to Washington, D.C. Reagan-National?

    Most people fly from Harlingen Valley Intl (HRL) if they book a flight from Harlingen to Washington, D.C. Reagan-National. On average, Valley Intl has 0 outbound flights to Washington, D.C. Reagan-National per day from 2 airlines. Harlingen Valley Intl is conveniently located just 3.7 mi from Harlingen’s city center.

  • How long is the flight from Harlingen to Washington, D.C. Reagan-National Airport?

    Southwest and United Airlines can get you from Harlingen to Washington, D.C. Reagan-National Airport in just under 5h 34m. Your travel time can differ by up to 2h 01m. The distance from Harlingen to Washington, D.C. Reagan-National Airport is about 1477 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Harlingen to Washington, D.C. Reagan-National Airport round-trip?

    Flying on United Airlines is currently your cheapest option to Washington, D.C. Reagan-National Airport, with prices starting at $270. Another option worth looking into is Southwest, starting at $328 round trip. United Airlines is 38% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Harlingen to Reagan-National 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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Manassas
Falls Church
Fredericksburg
Hanover
Laurel
Silver Spring
Clinton
Hunt Valley
Cordova
Woodbridge

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Harlingen to Reagan-National

Discover the top 2 airlines that operate flights from Harlingen to Reagan-National. 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 July 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$270Average$386FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$328Average$427FlexibilityNo cancel feeOn-time63%

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