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

Flying on United Airlines is currently your cheapest option to Harlingen, Texas, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $303 and $344, respectively. You may be able to fly from Washington, D.C. to Harlingen, Texas for 47% less than the average price by searching for these airlines.

What is the cheapest day to fly from Washington, D.C. to Harlingen, Texas?

Travelers seeking maximum savings on their Washington, D.C. to Harlingen, Texas flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

While some choose either Baltimore/Washington - Harlingen Valley Intl or Washington, D.C. Reagan-National - Harlingen Valley Intl, Washington, D.C. Dulles Intl - Harlingen Valley Intl is the most popular route from Washington, D.C. to Harlingen, Texas.

What is the cheapest day to fly round-trip from Washington, D.C. to Harlingen, Texas?

Travelers have found that booking a Tuesday departure is the best way to save up to 45% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

What is the cheapest month to fly from Washington, D.C. to Harlingen, Texas?

February is one of the best times of the year to fly to Harlingen, Texas from Washington, D.C.. Prices for February average $452 per person but you can even find prices for as low as $288. The most expensive prices can be found in the month of July. Opting for a February flight can save you 52% on your journey compared to booking in July

Most accurate provider : When it comes to deals on Washington, D.C.-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.-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Harlingen, Texas flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-Harlingen, Texas flights, Cheapflights users trust eDreams the most. eDreams 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.-Harlingen, Texas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Harlingen from Washington, D.C.?

Harlingen Valley Intl (HRL), located 3.7 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Harlingen. 3 airlines have flights to Valley Intl from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Harlingen Valley Intl should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. per day.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$119+ Flights from Washington, D.C. to Harlingen, TX - Compare & Save Big

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$237 (United Airlines)
One-way from	$119 (American Airlines)
Popular in	July
Cheapest in	February
Average price	$536

Provider with most accurate pricing for Washington, D.C. (WAS)-Harlingen Valley Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Harlingen Valley Intl flights.

Search Deals

From Washington, D.C. (WAS) to Harlingen Valley Intl

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One-way flight from Washington, D.C. (WAS) to Harlingen Valley Intl

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($74 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in May 2025

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

Cheapest flights from Washington, D.C. to Harlingen
Explore the most affordable flight options available from Washington, D.C. to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Thu 5/158:05 amDCA - HRL

1 stop6h 19mUnited Airlines

Mon 5/192:14 pmHRL - DCA

1 stop7h 01mUnited Airlines

Deal found 4/30

$237

Thu 5/156:00 amIAD - HRL

1 stop6h 24mUnited Airlines

Mon 5/192:14 pmHRL - IAD

1 stop6h 59mUnited Airlines

Deal found 4/30

$270

Thu 5/156:17 amIAD - HRL

1 stop6h 11mAmerican Airlines

Mon 5/1912:05 pmHRL - IAD

2 stops10h 57mAmerican Airlines

Deal found 4/30

$303

Thu 5/156:15 amBWI - HRL

1 stop11h 30mSouthwest

Tue 5/205:25 pmHRL - BWI

1 stop6h 05mSouthwest

Deal found 5/1

$344

Tue 5/137:18 pmBWI - HRL

1 stop5h 41mAmerican Airlines

Sat 5/1710:21 amHRL - BWI

2 stops11h 05mAmerican Airlines

Deal found 5/1

$375

Thu 5/155:00 amDCA - HRL

2 stops7h 28mAmerican Airlines

Mon 5/1912:05 pmHRL - DCA

1 stop6h 37mAmerican Airlines

Deal found 4/30

$377

Fri 8/292:54 pmBWI - HRL

1 stop5h 39mUnited Airlines

Tue 9/27:00 amHRL - BWI

1 stop8h 17mUnited Airlines

Deal found 5/1

$390

Tue 12/236:02 amBWI - HRL

1 stop9h 34mDelta

Thu 1/13:35 pmHRL - BWI

1 stop7h 16mDelta

Deal found 5/1

$453

Tue 5/66:35 pmDCA - HRL

1 stop5h 25mSouthwest

Thu 5/152:45 pmHRL - DCA

2 stops7h 45mSouthwest

Deal found 4/30

$476

Tue 12/236:07 amIAD - HRL

1 stop9h 29mDelta

Thu 1/13:35 pmHRL - IAD

1 stop7h 19mDelta

Deal found 5/1

$664

Best flights from Washington, D.C. to Harlingen
Discover carefully curated flight deals from Washington, D.C. to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Thu 5/158:05 amDCA - HRL

1 stop6h 19mUnited Airlines

Mon 5/192:14 pmHRL - DCA

1 stop7h 01mUnited Airlines

Deal found 4/30

$237

Thu 5/156:17 amIAD - HRL

1 stop6h 11mAmerican Airlines

Mon 5/1912:05 pmHRL - IAD

2 stops10h 57mAmerican Airlines

Deal found 4/30

$303

Thu 5/156:15 amBWI - HRL

1 stop11h 30mSouthwest

Tue 5/205:25 pmHRL - BWI

1 stop6h 05mSouthwest

Deal found 5/1

$344

Thu 5/156:00 amIAD - HRL

1 stop6h 24mUnited Airlines

Mon 5/192:14 pmHRL - IAD

1 stop6h 59mUnited Airlines

Deal found 4/30

$270

Tue 5/137:18 pmBWI - HRL

1 stop5h 41mAmerican Airlines

Sat 5/1710:21 amHRL - BWI

2 stops11h 05mAmerican Airlines

Deal found 5/1

$375

Thu 5/155:00 amDCA - HRL

2 stops7h 28mAmerican Airlines

Mon 5/1912:05 pmHRL - DCA

1 stop6h 37mAmerican Airlines

Deal found 4/30

$377

Fri 8/292:54 pmBWI - HRL

1 stop5h 39mUnited Airlines

Tue 9/27:00 amHRL - BWI

1 stop8h 17mUnited Airlines

Deal found 5/1

$390

Last-minute flights from Washington, D.C. to Harlingen
Discover last-minute flight deals from Washington, D.C. to Harlingen. Data last updated May 1, 2025 and is based on user searches.

Tue 5/66:00 amDCA - HRL

1 stop8h 24mUnited Airlines

Thu 5/157:15 amHRL - DCA

1 stop5h 36mUnited Airlines

Deal found 4/30

$420

Tue 5/68:25 amIAD - HRL

1 stop5h 59mUnited Airlines

Thu 5/157:15 amHRL - IAD

1 stop6h 05mUnited Airlines

Deal found 4/30

$420

Tue 5/67:00 amBWI - HRL

1 stop8h 20mSouthwest

Thu 5/155:35 pmHRL - BWI

1 stop5h 00mSouthwest

Deal found 4/30

$430

Tue 5/66:35 pmDCA - HRL

1 stop5h 25mSouthwest

Thu 5/152:45 pmHRL - DCA

2 stops7h 45mSouthwest

Deal found 4/30

$476

Tue 5/65:02 amIAD - HRL

2 stops7h 26mAmerican Airlines

Thu 5/154:27 pmHRL - IAD

1 stop5h 30mAmerican Airlines

Deal found 4/30

$741

Tue 5/137:18 pmBWI - HRL

1 stop5h 41mAmerican Airlines

Sat 5/1710:21 amHRL - BWI

2 stops11h 05mAmerican Airlines

Deal found 5/1

$375

Thu 5/158:05 amDCA - HRL

1 stop6h 19mUnited Airlines

Mon 5/192:14 pmHRL - DCA

1 stop7h 01mUnited Airlines

Deal found 4/30

$237

Thu 5/156:00 amIAD - HRL

1 stop6h 24mUnited Airlines

Mon 5/192:14 pmHRL - IAD

1 stop6h 59mUnited Airlines

Deal found 4/30

$270

Thu 5/156:17 amIAD - HRL

1 stop6h 11mAmerican Airlines

Mon 5/1912:05 pmHRL - IAD

2 stops10h 57mAmerican Airlines

Deal found 4/30

$303

Thu 5/156:15 amBWI - HRL

1 stop11h 30mSouthwest

Tue 5/205:25 pmHRL - BWI

1 stop6h 05mSouthwest

Deal found 5/1

$344

Thu 5/155:00 amDCA - HRL

2 stops7h 28mAmerican Airlines

Mon 5/1912:05 pmHRL - DCA

1 stop6h 37mAmerican Airlines

Deal found 4/30

$377

One-way flights from Washington, D.C. to Harlingen
Search for one-way flight options from Washington, D.C. to Harlingen. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Thu 5/1510:37 amDCA - HRL

1 stop6h 20mAmerican Airlines

Deal found 5/1

$119

Thu 5/156:17 amIAD - HRL

1 stop6h 11mAmerican Airlines

Deal found 5/1

$119

Thu 5/153:00 pmDCA - HRL

2 stops8h 10mSouthwest

Deal found 4/29

$284

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 5/15

8:05 am-1:24 pm

1 stop6h 19m

Harlingen Valley Intl

Mon 5/19

2:14 pm-10:15 pm

1 stop7h 01m

$237

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 5/15

6:00 am-11:24 am

1 stop6h 24m

Harlingen Valley Intl

Mon 5/19

2:14 pm-10:13 pm

1 stop6h 59m

$270

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 5/15

6:17 am-11:28 am

1 stop6h 11m

Harlingen Valley Intl

Mon 5/19

12:05 pm-12:02 am

2 stops10h 57m

$303

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Thu 5/15

6:15 am-4:45 pm

1 stop11h 30m

Harlingen Valley Intl

Tue 5/20

5:25 pm-12:30 am

1 stop6h 05m

$344

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Tue 5/13

7:18 pm-11:59 pm

1 stop5h 41m

Harlingen Valley Intl

Sat 5/17

10:21 am-10:26 pm

2 stops11h 05m

$375

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 5/15

5:00 am-11:28 am

2 stops7h 28m

Harlingen Valley Intl

Mon 5/19

12:05 pm-7:42 pm

1 stop6h 37m

$377

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Fri 8/29

2:54 pm-7:33 pm

1 stop5h 39m

Harlingen Valley Intl

Tue 9/2

7:00 am-4:17 pm

1 stop8h 17m

$390

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 5/15

10:37 am-3:57 pm

1 stop6h 20m

$119

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 5/15

6:17 am-11:28 am

1 stop6h 11m

$119

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Thu 5/15

3:00 pm-10:10 pm

2 stops8h 10m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Compare providers for flights from Washington, D.C. to Harlingen

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Harlingen in May.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 Washington, D.C.-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.-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Harlingen, Texas flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Harlingen, Texas flights, Cheapflights users trust eDreams the most. eDreams 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.-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 Washington, D.C. to Harlingen

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

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Harlingen, Texas (average of $267). Flying from Washington, D.C. to Harlingen, Texas in July is currently the most expensive (average of $411). 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.

What is the cheapest time of day to fly from WAS to HRL?

One of the essential ways to save on airfare from Washington, D.C. to Harlingen, Texas is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 9% on airfare.

Rainfall in Harlingen by month

In terms of precipitation, rainfall in Harlingen, Texas ranges from 1.1 - 5.2 inches per month. September is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Harlingen, Texas when rainfall is around 1.1 in.

Temperature in Harlingen by month

If weather is an important factor for your trip to Harlingen, Texas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 60.8 F).

Reviews of airlines servicing Harlingen

To help decide which airline to fly from Washington, D.C. to Harlingen, see what other customers have to say about Southwest, United Airlines and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,293 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Southwest

8.0

Very good

4,293 reviews

Southwest

8.0

Very good

4,293 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

United Airlines

7.4

Good

8,696 reviews

Southwest

8.0

Very good

4,293 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,293 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

What airport do you fly into for flights to Harlingen from Washington, D.C.?
Harlingen Valley Intl (HRL), located 3.7 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Harlingen. 3 airlines have flights to Valley Intl from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Harlingen Valley Intl should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. per day.
What are the cheapest airlines flying from Washington, D.C. to Harlingen, Texas round-trip?
Flying on United Airlines is currently your cheapest option to Harlingen, Texas, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $303 and $344, respectively. You may be able to fly from Washington, D.C. to Harlingen, Texas for 47% less than the average price by searching for these airlines.
What are the most popular routes from Washington, D.C. to Harlingen, Texas?
While some choose either Baltimore/Washington - Harlingen Valley Intl or Washington, D.C. Reagan-National - Harlingen Valley Intl, Washington, D.C. Dulles Intl - Harlingen Valley Intl is the most popular route from Washington, D.C. to Harlingen, Texas.
Can I find deals for flights from Washington, D.C. to Harlingen that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Harlingen flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Harlingen?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Harlingen.
Can I find deals for business class flights from Washington, D.C. to Harlingen?
Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Harlingen, Texas?
Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Harlingen, Texas (average of $267). Flying from Washington, D.C. to Harlingen, Texas in July is currently the most expensive (average of $411). 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

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Washington, D.C. to Harlingen

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$210	Average$443	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$228	Average$373	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$258	Average$479	FlexibilityNo cancel fee	On-time69%

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$119+ Cheap flights from Washington, D.C. (WAS) 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Harlingen with Cheapflights

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

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

Cheapest flights from Washington, D.C. to HarlingenExplore the most affordable flight options available from Washington, D.C. to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from Washington, D.C. to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Harlingen that are best for you.

Compare providers for flights from Washington, D.C. to Harlingen

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 Washington, D.C. to Harlingen in May.

Best time to book a flight from Washington, D.C. to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Washington, D.C. with our price prediction graph.

Cheapflights Insights

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

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

What is the cheapest time of day to fly from WAS to HRL?

Find hourly flight availability from Washington, D.C. to Harlingen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Rainfall in Harlingen by month

Plan your trip to Harlingen by taking into account the average rainfall totals by month.

Temperature in Harlingen by month

Plan your trip to Harlingen by taking into account the average temperature totals by month.

Reviews of airlines servicing Harlingen

To help decide which airline to fly from Washington, D.C. to Harlingen, see what other customers have to say about Southwest, United Airlines and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Harlingen

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Washington, D.C. to Harlingen

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Cheapest flights from Washington, D.C. to Harlingen
Explore the most affordable flight options available from Washington, D.C. to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.