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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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — HRL
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
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 19, 2026.

This United Airlines deal was found by Cheapflights users on 2/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:35 pm
DCA
-
HRL
1 stop6h 25m
United Airlines
Sat 5/95:18 pm
HRL
-
DCA
1 stop5h 40m
United Airlines
Deal found 2/15$251
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Tue 5/510:00 am
DCA
-
HRL
2 stops9h 15m
American Airlines
Sat 5/92:51 pm
HRL
-
DCA
1 stop7h 04m
American Airlines
Deal found 2/15$275
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Wed 5/66:57 am
DCA
-
HRL
1 stop8h 20m
American Airlines
Sat 5/96:00 am
HRL
-
DCA
2 stops9h 47m
American Airlines
Deal found 2/15$301
This United Airlines deal was found by Cheapflights users on 2/16. 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.
Mon 3/162:45 pm
DCA
-
HRL
1 stop6h 11m
United Airlines
Fri 3/207:00 am
HRL
-
DCA
1 stop5h 43m
United Airlines
Deal found 2/16$369
This United Airlines deal was found by Cheapflights users on 2/16. 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
Thu 4/912:05 pm
HRL
-
DCA
1 stop8h 00m
United Airlines
Deal found 2/16$375
This Southwest deal was found by Cheapflights users on 2/16. 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 3/166:50 pm
DCA
-
HRL
1 stop6h 15m
Southwest
Fri 3/206:00 am
HRL
-
DCA
1 stop5h 10m
Southwest
Deal found 2/16$389
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 United Airlines deal was found by Cheapflights users on 2/16. 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.
Mon 2/238:10 am
DCA
-
HRL
1 stop8h 54m
United Airlines
Sat 2/285:22 pm
HRL
-
DCA
1 stop5h 28m
United Airlines
Deal found 2/16$409
This American Airlines deal was found by Cheapflights users on 2/16. 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 3/232:14 pm
DCA
-
HRL
1 stop6h 22m
American Airlines
Fri 3/272:45 pm
HRL
-
DCA
1 stop7h 15m
American Airlines
Deal found 2/16$413

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 19, 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.
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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 19, 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

Wed 5/6

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Sat 5/9

5:18 pm-11:58 pm

1 stop5h 40m

$251

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Tue 5/5

2:35 pm-8:00 pm

1 stop6h 25m

Harlingen Valley Intl

Sat 5/9

5:18 pm-11:58 pm

1 stop5h 40m

$251

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Tue 5/5

10:00 am-6:15 pm

2 stops9h 15m

Harlingen Valley Intl

Sat 5/9

2:51 pm-10:55 pm

1 stop7h 04m

$275

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Wed 5/6

6:57 am-2:17 pm

1 stop8h 20m

Harlingen Valley Intl

Sat 5/9

6:00 am-4:47 pm

2 stops9h 47m

$301

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Mon 3/16

2:45 pm-7:56 pm

1 stop6h 11m

Harlingen Valley Intl

Fri 3/20

7:00 am-1:43 pm

1 stop5h 43m

$369

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

Thu 4/9

12:05 pm-9:05 pm

1 stop8h 00m

$375

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Mon 3/16

6:50 pm-12:05 am

1 stop6h 15m

Harlingen Valley Intl

Fri 3/20

6:00 am-12:10 pm

1 stop5h 10m

$389

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Mon 3/23

2:14 pm-7:36 pm

1 stop6h 22m

Harlingen Valley Intl

Fri 3/27

2:45 pm-11:00 pm

1 stop7h 15m

$413

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 4/4

6:00 am-11:35 am

1 stop6h 35m

Harlingen Valley Intl

Sat 4/11

6:05 am-2:45 pm

1 stop7h 40m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

  • 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 $456). 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 American Airlines fly from Washington, D.C. Reagan-National Airport to Harlingen, Texas in about 6h 23m. The time it takes to get you to your destination can typically vary by up to 2h 52m. 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 $456). 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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