What is the cheapest airline to fly from Harlingen, Texas to Washington, D.C. Reagan-National Airport round-trip?

According to our current data, Southwest ($333), offers the cheapest pricing from Harlingen, Texas to Washington, D.C. Reagan-National Airport. You may be able to fly from Harlingen, Texas to Washington, D.C. Reagan-National Airport for 18% less than the average price by searching for this airline.

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

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

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

Departing on a Monday is a good option for securing a great price. You can expect to save up to 5% when planning your travel around this day of the week.

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

The best pricing can be found in the month of September. Prices to Washington, D.C. Reagan-National Airport from Harlingen, Texas average $345. You can even find prices in September for less than $345, as users have found deals to Washington, D.C. Reagan-National Airport from as low as $226. The month of January appears to be one of the more expensive times to travel to Washington, D.C. Reagan-National Airport from Harlingen, Texas. Flying in the targeted month can save you up to 40%.

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

When flying from Harlingen, Texas to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Most people fly from Harlingen Valley Intl (HRL) if they book a flight from Harlingen to Washington, D.C. Reagan-National. On average, Valley Intl has 0 outbound flights to Washington, D.C. Reagan-National per day from 1 airline. Harlingen Valley Intl is conveniently located just 3.7 mi from Harlingen’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Harlingen to Reagan-National 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+ Cheap Flights from Harlingen, TX to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Harlingen to Reagan-National

Round-trip from	$251 (Delta)
One-way from	$119 (American Airlines)
Popular in	June
Cheapest in	July
Average price	$377

From Harlingen Valley Intl to Washington, D.C. Reagan-National

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One-way flight from Harlingen Valley Intl to Washington, D.C. Reagan-National

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Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Harlingen to Reagan-National

Cheapest flights from Harlingen to Reagan-National
Explore the most affordable flight options available from Harlingen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Sat 12/63:00 pmHRL - DCA

1 stop7h 31mDelta

Sat 1/107:40 amDCA - HRL

1 stop7h 49mDelta

Deal found 8/16

$251

Sat 12/610:30 amHRL - DCA

2 stops8h 00mSouthwest

Sat 1/1010:05 amDCA - HRL

2 stops9h 55mSouthwest

Deal found 8/16

$261

Thu 9/256:19 pmHRL - DCA

1 stop5h 36mAmerican Airlines

Mon 9/295:00 amDCA - HRL

1 stop5h 41mAmerican Airlines

Deal found 8/18

$284

Sun 8/242:47 pmHRL - DCA

1 stop7h 12mAmerican Airlines

Sun 8/3110:20 amDCA - HRL

1 stop8h 30mAmerican Airlines

Deal found 8/17

$349

Thu 9/255:00 amHRL - DCA

1 stop5h 34mUnited Airlines

Mon 9/2910:30 amDCA - HRL

2 stops10h 11mUnited Airlines

Deal found 8/18

$593

Sun 8/242:45 pmHRL - DCA

2 stops7h 15mSouthwest

Sun 8/312:00 pmDCA - HRL

2 stops8h 15mSouthwest

Deal found 8/17

$604

Best flights from Harlingen to Reagan-National
Discover carefully curated flight deals from Harlingen to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2025.

Sat 12/63:00 pmHRL - DCA

1 stop7h 31mDelta

Sat 1/107:40 amDCA - HRL

1 stop7h 49mDelta

Deal found 8/16

$251

Sat 12/610:30 amHRL - DCA

2 stops8h 00mSouthwest

Sat 1/1010:05 amDCA - HRL

2 stops9h 55mSouthwest

Deal found 8/16

$261

Thu 9/256:19 pmHRL - DCA

1 stop5h 36mAmerican Airlines

Mon 9/295:00 amDCA - HRL

1 stop5h 41mAmerican Airlines

Deal found 8/18

$284

Thu 9/255:00 amHRL - DCA

1 stop5h 34mUnited Airlines

Mon 9/2910:30 amDCA - HRL

2 stops10h 11mUnited Airlines

Deal found 8/18

$593

Last-minute flights from Harlingen to Reagan-National
Discover last-minute flight deals from Harlingen to Reagan-National. Data last updated August 18, 2025 and is based on user searches.

Sun 8/242:47 pmHRL - DCA

1 stop7h 12mAmerican Airlines

Sun 8/3110:20 amDCA - HRL

1 stop8h 30mAmerican Airlines

Deal found 8/17

$349

Sun 8/242:45 pmHRL - DCA

2 stops7h 15mSouthwest

Sun 8/312:00 pmDCA - HRL

2 stops8h 15mSouthwest

Deal found 8/17

$604

Thu 9/256:19 pmHRL - DCA

1 stop5h 36mAmerican Airlines

Mon 9/295:00 amDCA - HRL

1 stop5h 41mAmerican Airlines

Deal found 8/18

$284

Thu 9/255:00 amHRL - DCA

1 stop5h 34mUnited Airlines

Mon 9/2910:30 amDCA - HRL

2 stops10h 11mUnited Airlines

Deal found 8/18

$593

One-way flights from Harlingen to Reagan-National
Search for one-way flight options from Harlingen to Reagan-National. Find affordable one-way fares based on user searches. Data last updated August 18, 2025.

Tue 9/305:45 amHRL - DCA

1 stop5h 52mAmerican Airlines

Deal found 8/16

$119

Tue 9/3011:15 amHRL - DCA

2 stops8h 25mSouthwest

Deal found 8/16

$124

Mon 9/296:35 pmHRL - DCA

1 stop5h 23mAmerican Airlines

Deal found 8/16

$126

Mon 9/295:45 amHRL - DCA

2 stops8h 15mSouthwest

Deal found 8/16

$215

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 12/6

3:00 pm-11:31 pm

1 stop7h 31m

Washington, D.C. Reagan-National

Sat 1/10

7:40 am-2:29 pm

1 stop7h 49m

$251

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 12/6

10:30 am-7:30 pm

2 stops8h 00m

Washington, D.C. Reagan-National

Sat 1/10

10:05 am-7:00 pm

2 stops9h 55m

$261

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Thu 9/25

6:19 pm-12:55 am

1 stop5h 36m

Washington, D.C. Reagan-National

Mon 9/29

5:00 am-9:41 am

1 stop5h 41m

$284

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Thu 9/25

5:00 am-11:34 am

1 stop5h 34m

Washington, D.C. Reagan-National

Mon 9/29

10:30 am-7:41 pm

2 stops10h 11m

$593

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 9/30

5:45 am-12:37 pm

1 stop5h 52m

$119

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 9/30

11:15 am-8:40 pm

2 stops8h 25m

$124

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Mon 9/29

6:35 pm-12:58 am

1 stop5h 23m

$126

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Mon 9/29

5:45 am-3:00 pm

2 stops8h 15m

$215

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Best time to book a flight from Harlingen to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National 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. Reagan-National Airport

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

Currently, February is the cheapest month in which you can book a flight from Harlingen, Texas to Washington, D.C. Reagan-National Airport (average of $278). Flying from Harlingen, Texas to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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 Reagan-National

Get a feel of what it's like to fly with Southwest from Harlingen to Washington, D.C. Reagan-National Airport 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

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Southwest

8.0

Very good

4,246 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

What airport do you fly from for flights from Harlingen to Washington, D.C. Reagan-National?
Most people fly from Harlingen Valley Intl (HRL) if they book a flight from Harlingen to Washington, D.C. Reagan-National. On average, Valley Intl has 0 outbound flights to Washington, D.C. Reagan-National per day from 1 airline. Harlingen Valley Intl is conveniently located just 3.7 mi from Harlingen’s city center.
How long is the flight from Harlingen, Texas to Washington, D.C. Reagan-National Airport?
Delta, Southwest, and American Airlines can get you from Harlingen, Texas to Washington, D.C. Reagan-National Airport in just under 5h 36m. Your travel time can differ by up to 2h 24m. The distance between Harlingen, Texas and Washington, D.C. Reagan-National Airport is about 1477 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What is the cheapest airline to fly from Harlingen, Texas to Washington, D.C. Reagan-National Airport round-trip?
According to our current data, Southwest ($333), offers the cheapest pricing from Harlingen, Texas to Washington, D.C. Reagan-National Airport. You may be able to fly from Harlingen, Texas to Washington, D.C. Reagan-National Airport for 18% less than the average price by searching for this airline.
Can I find deals for flights from Harlingen to Reagan-National that include hotel bookings?
Yes. In addition to deals on Harlingen to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Harlingen to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to Reagan-National.
Can I find deals for business class flights from Harlingen to Reagan-National?
Yes. Cheapflights offers flight deals from Harlingen to Reagan-National 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. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Harlingen, Texas to Washington, D.C. Reagan-National Airport (average of $278). Flying from Harlingen, Texas to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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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Tysons

Silver Spring

Springfield

Fredericksburg

Gaithersburg

Towson

Linthicum Heights

Fairfax

Manassas

Falls Church

Laurel

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Oxon Hill

National Harbor

Dundalk

Waldorf

Bowie

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Harlingen to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$333	Average$448	FlexibilityNo cancel fee	On-time63%

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$119+ Cheap flights from Harlingen, TX (HRL) to Reagan-National (DCA)

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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Harlingen to Reagan-National with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Harlingen to Reagan-National

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Harlingen to Reagan-National

Cheapest flights from Harlingen to Reagan-NationalExplore the most affordable flight options available from Harlingen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Explore the most affordable flight options available from Harlingen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Harlingen to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Harlingen with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Harlingen to Washington, D.C. Reagan-National Airport

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

Reviews of airlines servicing Reagan-National

Get a feel of what it's like to fly with Southwest from Harlingen to Washington, D.C. Reagan-National Airport by reading reviews from past customers. Users have also rated airlines 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 Harlingen to Reagan-National. 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. Reagan-National?

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

What is the cheapest airline to fly from Harlingen, Texas to Washington, D.C. Reagan-National Airport round-trip?

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

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

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

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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Harlingen to Reagan-National

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

Top airline flying from Harlingen to Reagan-National

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Cheapest flights from Harlingen to Reagan-National
Explore the most affordable flight options available from Harlingen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.