What airlines fly to Washington, D.C. Reagan-National Airport?

United Airlines, Southwest and American Airlines are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from Harlingen according to our data. United Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Reagan-National Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Harlingen Valley Intl to Washington, D.C. Reagan-National?

United Airlines, Delta, and Southwest are the most popular carriers operating from Harlingen Valley Intl to Washington, D.C. Reagan-National

When did momondo last update prices for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport?

Prices for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport refresh daily.

How many operators does momondo search for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport?

As of October 2026, there are 2 operators available to choose from for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport.

How old do you have to be to fly from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport.

What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$180 Cheap Flights from Harlingen to Washington, D.C. Reagan-National Airport in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to Washington, D.C.

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Cheap round-trip flights

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1:59 pm - 8:58 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 59m1 stop Houston George Bush Intcntl

10:54 am - 3:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 56m1 stop Houston George Bush Intcntl

$297United Airlines

Thu, Nov 26 - Wed, Dec 2

2:05 pm - 10:14 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

7h 09m1 stop Houston George Bush Intcntl

2:28 pm - 7:39 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 11m1 stop Houston George Bush Intcntl

$377United Airlines

Fri, Dec 18 - Mon, Jan 4

2:47 pm - 11:57 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 10m1 stop Dallas/Fort Worth

5:00 am - 10:04 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 04m1 stop Dallas/Fort Worth

$378American Airlines

Wed, Dec 23 - Tue, Dec 29

7:10 am - 2:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 45m1 stop Austin Bergstrom

8:25 am - 3:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 25m2 stops Lambert-St Louis Houston Hobby

$383Southwest

Thu, Nov 26 - Wed, Dec 2

7:10 am - 1:40 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 30m1 stop Houston George Bush Intcntl

6:05 am - 11:14 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 09m1 stop Houston George Bush Intcntl

$385United Airlines

Thu, Nov 26 - Tue, Dec 1

5:25 pm - 11:57 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 32m1 stop Houston George Bush Intcntl

12:50 pm - 7:47 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 57m1 stop Houston George Bush Intcntl

$397United Airlines

Tue, Nov 10 - Sat, Nov 14

5:55 am - 2:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 00m2 stops Houston Hobby Austin Bergstrom

12:45 pm - 8:45 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

9h 00m2 stops Dallas Love Field Austin Bergstrom

$407Southwest

Thu, Nov 26 - Wed, Dec 2

2:32 pm - 9:54 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 22m1 stop Minneapolis St Paul

6:00 am - 1:42 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 42m1 stop Minneapolis St Paul

$428Delta

Wed, Dec 23 - Sat, Jan 2

11:50 am - 8:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 05m2 stops Austin Bergstrom Dallas Love Field

7:00 pm - 11:35 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 35m1 stop Houston Hobby

$433Southwest

Fri, Dec 18 - Mon, Jan 4

2:47 pm - 11:57 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 10m1 stop Dallas/Fort Worth

5:00 am - 10:04 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 04m1 stop Dallas/Fort Worth

$439American Airlines

Fri, Dec 18 - Mon, Jan 4

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United Airlines flights from Harlingen to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on Harlingen to Washington, D.C. Reagan-National Airport flight tickets

United Airlines

Nov 26

HRL1:59 pmHarlingen Valley Intl

5h 59m

1 stop

DCA8:58 pmWashington, D.C. Reagan-National

Dec 2

DCA10:54 amWashington, D.C. Reagan-National

5h 56m

1 stop

HRL3:50 pmHarlingen Valley Intl

$297

United Airlines

Dec 18

HRL2:05 pmHarlingen Valley Intl

7h 09m

1 stop

DCA10:14 pmWashington, D.C. Reagan-National

Jan 4

DCA2:28 pmWashington, D.C. Reagan-National

6h 11m

1 stop

HRL7:39 pmHarlingen Valley Intl

$377

United Airlines

Nov 26

HRL7:10 amHarlingen Valley Intl

5h 30m

1 stop

DCA1:40 pmWashington, D.C. Reagan-National

Dec 1

DCA6:05 amWashington, D.C. Reagan-National

6h 09m

1 stop

HRL11:14 amHarlingen Valley Intl

$385

Delta flights from Harlingen to Washington, D.C. Reagan-National Airport

Our best Delta deals on Harlingen to Washington, D.C. Reagan-National Airport flight tickets

Delta

Dec 23

HRL2:32 pmHarlingen Valley Intl

6h 22m

1 stop

DCA9:54 pmWashington, D.C. Reagan-National

Jan 2

DCA6:00 amWashington, D.C. Reagan-National

8h 42m

1 stop

HRL1:42 pmHarlingen Valley Intl

$428

Delta

Dec 23

HRL2:32 pmHarlingen Valley Intl

6h 22m

1 stop

DCA9:54 pmWashington, D.C. Reagan-National

Jan 2

DCA6:00 amWashington, D.C. Reagan-National

8h 42m

1 stop

HRL1:42 pmHarlingen Valley Intl

$475

momondo 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

Cheapest round-trip

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

1:59 pm-8:58 pm

1 stop5h 59m

Washington, D.C. Reagan-National

Wed 12/2

10:54 am-3:50 pm

1 stop5h 56m

$297

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Fri 12/18

2:05 pm-10:14 pm

1 stop7h 09m

Washington, D.C. Reagan-National

Mon 1/4

2:28 pm-7:39 pm

1 stop6h 11m

$377

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Wed 12/23

2:47 pm-11:57 pm

1 stop8h 10m

Washington, D.C. Reagan-National

Tue 12/29

5:00 am-10:04 am

1 stop6h 04m

$378

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

7:10 am-2:55 pm

1 stop6h 45m

Washington, D.C. Reagan-National

Wed 12/2

8:25 am-3:50 pm

2 stops8h 25m

$383

Quickest round-trip

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

7:10 am-1:40 pm

1 stop5h 30m

Washington, D.C. Reagan-National

Tue 12/1

6:05 am-11:14 am

1 stop6h 09m

$385

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Tue 11/10

5:25 pm-11:57 pm

1 stop5h 32m

Washington, D.C. Reagan-National

Sat 11/14

12:50 pm-7:47 pm

1 stop7h 57m

$397

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

5:55 am-2:55 pm

2 stops8h 00m

Washington, D.C. Reagan-National

Wed 12/2

12:45 pm-8:45 pm

2 stops9h 00m

$407

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Wed 12/23

2:32 pm-9:54 pm

1 stop6h 22m

Washington, D.C. Reagan-National

Sat 1/2

6:00 am-1:42 pm

1 stop8h 42m

$428

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Fri 12/18

11:50 am-8:55 pm

2 stops8h 05m

Washington, D.C. Reagan-National

Mon 1/4

7:00 pm-11:35 pm

1 stop5h 35m

$433

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Fri 12/18

2:47 pm-11:57 pm

1 stop8h 10m

Washington, D.C. Reagan-National

Mon 1/4

5:00 am-10:04 am

1 stop6h 04m

$439

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Harlingen to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

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

The month of March is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Harlingen, with most prices found around $0. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $0.

When to book flights from Harlingen to Washington, D.C. Reagan-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Harlingen to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Harlingen to Washington, D.C. Reagan-National Airport (HRL to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen to Washington, D.C. Reagan-National Airport

Best Price Found	$180
Fastest flight time	5h 32m
Direct flights	None

The best one-way flight to Washington, D.C. Reagan-National Airport from Harlingen in the past 72 hours is $180. The best round-trip flight deal from Harlingen to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $297.

The fastest flight from Harlingen to Washington, D.C. Reagan-National Airport takes 5h 32m

There are no direct flights from Harlingen to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Harlingen to Washington, D.C. Reagan-National Airport.

Search flight deals

Frequently asked questions about flying from Harlingen to Washington, D.C. Reagan-National Airport

How far is Harlingen Valley Intl to Washington, D.C. Reagan-National by plane?
Harlingen Valley Intl and Washington, D.C. Reagan-National are 1480.9 mi apart from one another. Flights usually cover this in 5h 32m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport?
Prices for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport refresh daily.
How many operators does momondo search for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport?
As of October 2026, there are 2 operators available to choose from for flights from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport.
How old do you have to be to fly from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Harlingen Valley Intl Airport to Washington, D.C. Reagan-National Airport.
What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?
The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Harlingen to Washington, D.C. Reagan-National Airport?
Based on momondo bookings for flights between Harlingen and Washington, D.C. Reagan-National Airport, the leading airline is Southwest, making up 54% of the total bookings. Other popular airlines include United Airlines with 46%.

Best airlines flying from Harlingen to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Harlingen to Washington, D.C. Reagan-National Airport with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.3 10,460 reviews		Search United Airlines flights
Southwest	PriceFrom $373	Free Cancellation	Rating 7.9 4,222 reviews		Search Southwest flights

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Glen Burnie

Edgewood

College Park

Camp Springs

Colonial Beach

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Why should I use momondo to find a flight deal from Harlingen to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Harlingen.

Can I find flights from Harlingen to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Harlingen which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Harlingen to Washington, D.C.?

Once you have performed a search for Harlingen to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Harlingen to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from Harlingen. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Harlingen to Washington, D.C. from $180

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to Washington, D.C. departing on 12/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Harlingen to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on Harlingen to Washington, D.C. Reagan-National Airport flight tickets

Delta flights from Harlingen to Washington, D.C. Reagan-National Airport

Our best Delta deals on Harlingen to Washington, D.C. Reagan-National Airport flight tickets

momondo 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.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Harlingen to Washington, D.C. Reagan-National Airport

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

What is the cheapest airline that flies from Harlingen Valley Intl to Washington, D.C. Reagan-National?

What airlines fly to Washington, D.C. Reagan-National Airport?

When to book flights from Harlingen to Washington, D.C. Reagan-National Airport

Cheap Harlingen to Washington, D.C. Reagan-National Airport (HRL to DCA) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Harlingen to Washington, D.C. Reagan-National Airport

Best airlines flying from Harlingen to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Harlingen to Washington, D.C. Reagan-National Airport with momondo

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

Why use momondo?

An easier way to manage your Washington, D.C. Reagan-National Airport trip

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Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington, D.C.

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