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Washington, D.C.

$270+ Cheap flights from Harlingen, TX (HRL) to Washington, D.C. (WAS)

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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — WAS
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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Cheap flight deals from Harlingen to Washington, D.C.

Cheapest flights from Harlingen to Washington, D.C.
Explore the most affordable flight options available from Harlingen to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

This Southwest deal was found by Cheapflights users on 1/31. 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 2/267:00 am
HRL
-
BWI
1 stop8h 35m
Southwest
Sun 3/16:15 am
BWI
-
HRL
1 stop6h 15m
Southwest
Deal found 1/31$314
This Southwest deal was found by Cheapflights users on 1/31. 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 2/196:35 am
HRL
-
BWI
1 stop8h 10m
Southwest
Sat 2/213:55 pm
BWI
-
HRL
1 stop6h 35m
Southwest
Deal found 1/31$318
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/192:45 pm
HRL
-
BWI
1 stop7h 14m
American Airlines
Sun 2/226:00 am
BWI
-
HRL
1 stop9h 14m
American Airlines
Deal found 2/2$319
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/192:45 pm
HRL
-
IAD
1 stop7h 08m
American Airlines
Sun 2/226:00 am
IAD
-
HRL
1 stop9h 14m
American Airlines
Deal found 2/2$324
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/97:00 am
HRL
-
BWI
1 stop8h 06m
United Airlines
Tue 2/108:07 am
BWI
-
HRL
1 stop8h 59m
United Airlines
Deal found 1/31$327
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/2412:10 pm
HRL
-
DCA
1 stop7h 46m
United Airlines
Sat 2/283:59 pm
DCA
-
HRL
1 stop7h 00m
United Airlines
Deal found 1/31$331
This Southwest deal was found by Cheapflights users on 1/31. 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 2/137:00 am
HRL
-
BWI
1 stop8h 35m
Southwest
Mon 2/1612:35 pm
BWI
-
HRL
1 stop10h 35m
Southwest
Deal found 1/31$338
This Southwest deal was found by Cheapflights users on 1/30. 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.
Sun 8/96:50 am
HRL
-
BWI
1 stop5h 20m
Southwest
Tue 8/1112:50 pm
BWI
-
HRL
1 stop8h 20m
Southwest
Deal found 1/30$349
This Southwest deal was found by Cheapflights users on 1/31. 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 2/1112:15 pm
HRL
-
BWI
2 stops8h 45m
Southwest
Sat 2/144:15 pm
BWI
-
HRL
2 stops7h 35m
Southwest
Deal found 1/31$353
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/262:45 pm
HRL
-
IAD
1 stop7h 08m
American Airlines
Sun 3/16:00 am
IAD
-
HRL
1 stop9h 14m
American Airlines
Deal found 2/2$353
This American Airlines deal was found by Cheapflights users on 1/31. 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 2/113:22 pm
HRL
-
DCA
1 stop6h 38m
American Airlines
Sat 2/143:59 pm
DCA
-
HRL
1 stop8h 04m
American Airlines
Deal found 1/31$374
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/912:10 pm
HRL
-
IAD
1 stop7h 39m
United Airlines
Tue 2/108:15 am
IAD
-
HRL
1 stop8h 51m
United Airlines
Deal found 1/31$409

Find flight deals from Harlingen to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to Washington, D.C. (WAS). 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 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$314
(Southwest)

One-way from

$270
(Southwest)
Provider with most accurate pricing for Harlingen Valley Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Harlingen Valley Intl-Washington, D.C. (WAS) flights.
Search Deals
From Harlingen Valley Intl to Washington, D.C. (WAS)
Search Deals
One-way flight from Harlingen Valley Intl to Washington, D.C. (WAS)
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Washington, D.C. 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 2, 2026.
Use the filters below to find and compare flights from Harlingen to Washington, D.C. that are best for you.

Fly from

Harlingen

Fly to

Washington, D.C.

Route

Depart

Return

Price

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Thu 2/26

7:00 am-4:35 pm

1 stop8h 35m

Baltimore/Washington

Sun 3/1

6:15 am-11:30 am

1 stop6h 15m

$314

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Thu 2/19

2:45 pm-10:59 pm

1 stop7h 14m

Baltimore/Washington

Sun 2/22

6:00 am-2:14 pm

1 stop9h 14m

$318

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Thu 2/19

6:35 am-3:45 pm

1 stop8h 10m

Baltimore/Washington

Sat 2/21

3:55 pm-9:30 pm

1 stop6h 35m

$318

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 2/19

2:45 pm-10:53 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

Sun 2/22

6:00 am-2:14 pm

1 stop9h 14m

$324

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 2/24

12:10 pm-8:56 pm

1 stop7h 46m

Washington, D.C. Reagan-National

Sat 2/28

3:59 pm-9:59 pm

1 stop7h 00m

$331

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Fri 2/13

7:00 am-4:35 pm

1 stop8h 35m

Baltimore/Washington

Mon 2/16

12:35 pm-10:10 pm

1 stop10h 35m

$338

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 2/26

2:45 pm-10:53 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

Sun 3/1

6:00 am-2:14 pm

1 stop9h 14m

$353

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Thu 2/26

2:45 pm-10:59 pm

1 stop7h 14m

Baltimore/Washington

Sun 3/1

3:21 pm-10:53 pm

1 stop8h 32m

$394

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sun 3/15

6:30 pm-12:30 am

1 stop5h 00m

$270

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sun 3/15

11:05 am-5:46 pm

3 stops53h 41m

$1,300

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

Cheapflights Insights

Everything you need to know about your flight from Harlingen to Washington, D.C.

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

Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Washington, D.C. (average of $155). Flying from Harlingen, Texas to Washington, D.C. in June is currently the most expensive (average of $348). 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.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated February 2, 2026.
Get a feel of what it's like to fly with Southwest from Harlingen to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,271 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,271 reviews
Southwest
8.0
Very good
4,271 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Harlingen to Washington, D.C.. 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.?

    Harlingen Valley Intl (HRL), located 3.7 mi from the city center, is the airport you fly out of when you book flights from Harlingen to Washington, D.C.. 2 airlines have flights from Valley Intl to Washington, D.C. on a regular basis. Booking flights from Harlingen Valley Intl to Washington, D.C. should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. per day.

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

    Southwest, American Airlines, and United Airlines can get you from Harlingen, Texas to Washington, D.C. in just under 7h 14m. Your travel time can differ by up to 1h 21m. Airlines will cover a distance of 1506 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    United Airlines, at $250, was found to be the cheapest airline from Harlingen, Texas to Washington, D.C.. An alternate airline flying to your destination would be Southwest.

  • What are the most popular routes from Harlingen, Texas to Washington, D.C.?

    When deciding which route to take from Harlingen, Texas to Washington, D.C. consider Harlingen Valley Intl - Washington, D.C. Dulles Intl, Harlingen Valley Intl - Baltimore/Washington or Harlingen Valley Intl - Washington, D.C. Reagan-National as they are the most popular.

  • Can I find deals for flights from Harlingen to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Harlingen to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Harlingen to Washington, D.C.?

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

  • Can I find deals for business class flights from Harlingen to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Harlingen to Washington, D.C. 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 Harlingen, Texas to Washington, D.C.?

    Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Washington, D.C. (average of $155). Flying from Harlingen, Texas to Washington, D.C. in June is currently the most expensive (average of $348). 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

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Harlingen to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Harlingen to Washington, D.C.

Discover the top 2 airlines that operate flights from Harlingen to Washington, D.C.. 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 February 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$155Average$393FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$250Average$398FlexibilityNo cancel feeOn-time69%

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