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Harlingen

$251+ Cheap flights from Reagan-National (DCA) to Harlingen, TX (HRL)

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — HRL
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap flight deals from Reagan-National to Harlingen

Cheapest flights from Reagan-National to Harlingen
Explore the most affordable flight options available from Reagan-National to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.

This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sat 5/211:05 am
DCA
-
HRL
1 stop5h 59m
United Airlines
Tue 5/57:00 am
HRL
-
DCA
1 stop5h 35m
United Airlines
Deal found 2/19$251
This Delta deal was found by Cheapflights users on 2/19. 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.
Sat 5/26:00 am
DCA
-
HRL
2 stops10h 05m
Delta
Tue 5/54:02 pm
HRL
-
DCA
1 stop6h 41m
Delta
Deal found 2/19$256
This United Airlines deal was found by Cheapflights users on 2/19. 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 4/178:30 am
DCA
-
HRL
1 stop8h 34m
United Airlines
Sun 4/195:18 pm
HRL
-
DCA
1 stop5h 41m
United Airlines
Deal found 2/19$289
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 4/166:00 am
DCA
-
HRL
1 stop6h 23m
United Airlines
Sun 4/195:18 pm
HRL
-
DCA
1 stop5h 41m
United Airlines
Deal found 2/19$331
This United Airlines deal was found by Cheapflights users on 2/19. 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 3/66:00 am
DCA
-
HRL
1 stop6h 16m
United Airlines
Tue 3/107:00 am
HRL
-
DCA
1 stop5h 43m
United Airlines
Deal found 2/19$339
This Southwest deal was found by Cheapflights users on 2/19. 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.
Sat 5/23:30 pm
DCA
-
HRL
2 stops7h 05m
Southwest
Tue 5/510:45 am
HRL
-
DCA
2 stops9h 00m
Southwest
Deal found 2/19$344
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Sat 4/44:34 pm
DCA
-
HRL
1 stop6h 25m
United Airlines
Fri 4/105:18 pm
HRL
-
DCA
1 stop5h 41m
United Airlines
Deal found 2/17$392
This Southwest deal was found by Cheapflights users on 2/19. 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 3/66:50 pm
DCA
-
HRL
1 stop6h 15m
Southwest
Tue 3/106:05 am
HRL
-
DCA
2 stops6h 10m
Southwest
Deal found 2/19$424
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:00 am
DCA
-
HRL
1 stop5h 59m
United Airlines
Sat 10/315:16 pm
HRL
-
DCA
1 stop5h 29m
United Airlines
Deal found 2/20$429
This United Airlines deal was found by Cheapflights users on 2/17. 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 4/36:00 am
DCA
-
HRL
1 stop6h 23m
United Airlines
Fri 4/105:18 pm
HRL
-
DCA
1 stop5h 41m
United Airlines
Deal found 2/17$435
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Mon 2/234:59 pm
DCA
-
HRL
1 stop7h 04m
American Airlines
Sat 2/282:45 pm
HRL
-
DCA
1 stop7h 15m
American Airlines
Deal found 2/19$439

Find flight deals from Reagan-National to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Harlingen (HRL). 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 February 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$288
Provider with most accurate pricing for Washington, D.C. Reagan-National-Harlingen Valley Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Harlingen Valley Intl flights.
Search Deals
From Washington, D.C. Reagan-National to Harlingen Valley Intl
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($164 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Harlingen 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 February 21, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Harlingen that are best for you.

Fly from

Reagan-National

Fly to

Harlingen

Route

Depart

Return

Price

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 5/2

6:05 am-3:05 pm

1 stop10h 00m

Harlingen Valley Intl

Tue 5/5

4:02 pm-11:43 pm

1 stop6h 41m

$251

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Fri 4/17

8:30 am-4:04 pm

1 stop8h 34m

Harlingen Valley Intl

Sun 4/19

5:18 pm-11:59 pm

1 stop5h 41m

$289

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 4/16

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Sun 4/19

5:18 pm-11:59 pm

1 stop5h 41m

$331

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Fri 3/6

6:00 am-11:16 am

1 stop6h 16m

Harlingen Valley Intl

Tue 3/10

7:00 am-1:43 pm

1 stop5h 43m

$339

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 5/2

3:30 pm-9:35 pm

2 stops7h 05m

Harlingen Valley Intl

Tue 5/5

10:45 am-8:45 pm

2 stops9h 00m

$344

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Fri 3/6

6:50 pm-12:05 am

1 stop6h 15m

Harlingen Valley Intl

Tue 3/10

6:05 am-1:15 pm

2 stops6h 10m

$424

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Fri 4/3

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Fri 4/10

5:18 pm-11:59 pm

1 stop5h 41m

$435

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 4/4

2:45 pm-11:55 pm

2 stops10h 10m

Harlingen Valley Intl

Fri 4/10

5:00 pm-11:25 pm

1 stop5h 25m

$444

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Fri 4/3

3:40 pm-12:05 am

2 stops9h 25m

Harlingen Valley Intl

Fri 4/10

12:30 pm-8:55 pm

1 stop7h 25m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Harlingen, Texas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Reagan-National Airport-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Harlingen, Texas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Harlingen, Texas 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 Washington, D.C. Reagan-National Airport-Harlingen, Texas 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 Reagan-National to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen 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 Harlingen

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Harlingen, Texas (average of $236). Flying from Washington, D.C. Reagan-National Airport to Harlingen, Texas in February is currently the most expensive (average of $458). 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.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Harlingen. 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 into for flights to Harlingen from Washington, D.C. Reagan-National?

    For a flight from Washington, D.C. Reagan-National to Harlingen, you will be flying into Valley Intl. Harlingen Valley Intl (HRL) is just 3.7 mi from the center of the city. Valley Intl is the only Harlingen airport and it handles 0 inbound flights from Washington, D.C. Reagan-National per day. 0 airlines have flights to Harlingen Valley Intl from Washington, D.C. Reagan-National on a regular basis.

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

    Airlines like United Airlines and Delta fly from Washington, D.C. Reagan-National Airport to Harlingen, Texas in about 5h 59m. The time it takes to get you to your destination can typically vary by up to 4h 06m. There are 1477 mi between Washington, D.C. Reagan-National Airport and Harlingen, Texas. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Harlingen, Texas (average of $236). Flying from Washington, D.C. Reagan-National Airport to Harlingen, Texas in February is currently the most expensive (average of $458). 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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