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Harlingen

$126+ Cheap flights from Reagan-National (DCA) to Harlingen, TX (HRL)

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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — HRL
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap 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 January 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$280
(Southwest)

One-way from

$135
(United Airlines)
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.
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From Washington, D.C. Reagan-National to Harlingen Valley Intl
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One-way flight from Washington, D.C. Reagan-National to Harlingen Valley Intl
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Find 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 January 8, 2026.

This Southwest deal was found by Cheapflights users on 1/7. 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 3/245:55 pmDCA - HRL
1 stop5h 45mSouthwest
Sat 3/285:05 amHRL - DCA
1 stop5h 00mSouthwest
Deal found 1/7$280
This Southwest deal was found by Cheapflights users on 1/7. 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.
Wed 3/257:30 amDCA - HRL
2 stops9h 40mSouthwest
Sat 3/285:05 amHRL - DCA
1 stop5h 00mSouthwest
Deal found 1/7$316
This United Airlines deal was found by Cheapflights users on 1/8. 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 1/2211:00 amDCA - HRL
1 stop6h 06mUnited Airlines
Mon 1/265:25 pmHRL - DCA
1 stop5h 34mUnited Airlines
Deal found 1/8$319
This Southwest deal was found by Cheapflights users on 1/7. 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.
Thu 3/266:10 amDCA - HRL
1 stop6h 35mSouthwest
Mon 3/306:00 amHRL - DCA
1 stop5h 10mSouthwest
Deal found 1/7$346
This Southwest deal was found by Cheapflights users on 1/8. 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 3/56:50 pmDCA - HRL
1 stop6h 15mSouthwest
Sun 3/812:50 pmHRL - DCA
1 stop9h 05mSouthwest
Deal found 1/8$411
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/202:45 pmDCA - HRL
1 stop8h 14mUnited Airlines
Fri 1/239:20 amHRL - DCA
1 stop5h 37mUnited Airlines
Deal found 1/6$419
This American Airlines deal was found by Cheapflights users on 1/8. 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.
Thu 1/2210:47 amDCA - HRL
1 stop8h 27mAmerican Airlines
Mon 1/266:02 amHRL - DCA
2 stops8h 57mAmerican Airlines
Deal found 1/8$429

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 January 8, 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 3/25

6:00 am-12:05 pm

1 stop7h 05m

Harlingen Valley Intl

Sat 3/28

5:05 am-11:05 am

1 stop5h 00m

$280

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Tue 3/24

5:55 pm-10:40 pm

1 stop5h 45m

Harlingen Valley Intl

Sat 3/28

5:05 am-11:05 am

1 stop5h 00m

$280

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 1/22

11:00 am-4:06 pm

1 stop6h 06m

Harlingen Valley Intl

Mon 1/26

5:25 pm-11:59 pm

1 stop5h 34m

$319

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 3/26

6:10 am-11:45 am

1 stop6h 35m

Harlingen Valley Intl

Mon 3/30

6:00 am-12:10 pm

1 stop5h 10m

$346

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 3/5

6:50 pm-12:05 am

1 stop6h 15m

Harlingen Valley Intl

Sun 3/8

12:50 pm-10:55 pm

1 stop9h 05m

$411

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Tue 1/20

4:28 pm-9:59 pm

1 stop6h 31m

Harlingen Valley Intl

Sat 1/24

5:25 pm-11:59 pm

1 stop5h 34m

$419

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Tue 1/20

2:45 pm-9:59 pm

1 stop8h 14m

Harlingen Valley Intl

Fri 1/23

9:20 am-3:57 pm

1 stop5h 37m

$419

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 2/7

6:00 am-11:26 am

1 stop6h 26m

$126

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 2/7

10:10 am-6:14 pm

2 stops9h 04m

$131

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Fri 2/27

1:10 pm-7:15 pm

1 stop7h 05m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 12 results
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  • 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 July is currently the most expensive (average of $538). 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 Southwest fly from Washington, D.C. Reagan-National Airport to Harlingen, Texas in about 5h 45m. The time it takes to get you to your destination can typically vary by up to . There are 1477 mi between Washington, D.C. Reagan-National Airport and Harlingen, Texas.

  • 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 July is currently the most expensive (average of $538). 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.

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