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 September 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.

$217 Cheap Flights from Harlingen to Washington, D.C. Reagan-National Airport in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 11:00 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 30m1 stop Houston Hobby

11:40 am - 3:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 10m1 stop Houston Hobby

$339Southwest

Thu, Dec 3 - Mon, Dec 7

5:18 pm - 11:59 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 41m1 stop Houston George Bush Intcntl

8:55 am - 3:59 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 04m1 stop Houston George Bush Intcntl

$339United Airlines

Thu, Oct 1 - Mon, Oct 5

2:13 pm - 11:44 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 31m1 stop Minneapolis St Paul

6:05 am - 1:23 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 18m1 stop Minneapolis St Paul

$339Delta

Thu, Oct 8 - Sat, Oct 10

2:13 pm - 11:44 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 31m1 stop Minneapolis St Paul

6:10 am - 1:23 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 13m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul

$344Delta

Thu, Oct 8 - Sat, Oct 10

4:30 pm - 11:00 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 30m1 stop Houston Hobby

2:40 pm - 9:45 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 05m2 stops Lambert-St Louis Houston Hobby

$344Southwest

Thu, Dec 3 - Mon, Dec 7

1:50 pm - 10:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 05m1 stop Dallas Love Field

5:05 pm - 11:40 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 35m2 stops Nashville Intl Houston Hobby

$369Southwest

Thu, Oct 1 - Mon, Oct 5

7:25 am - 3:50 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

7h 25m2 stops Houston Hobby Nashville Intl

6:55 pm - 11:40 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 45m1 stop Houston Hobby

$379Southwest

Wed, Sep 30 - Mon, Oct 5

5:51 am - 1:43 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 52m1 stop Dallas/Fort Worth

5:00 am - 9:58 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 58m1 stop Dallas/Fort Worth

$409American Airlines

Wed, Sep 23 - Sun, Sep 27

5:05 am - 11:53 amHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 48m1 stop Houston George Bush Intcntl

8:20 am - 1:23 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 03m1 stop Houston George Bush Intcntl

$409United Airlines

Fri, Sep 25 - Tue, Sep 29

5:05 am - 11:47 amHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 42m1 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

$429United Airlines

Sun, Nov 8 - Sat, Nov 14

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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

Oct 1

HRL5:18 pmHarlingen Valley Intl

5h 41m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

Oct 5

DCA8:55 amWashington, D.C. Reagan-National

8h 04m

1 stop

HRL3:59 pmHarlingen Valley Intl

$339

United Airlines

Jan 26

HRL7:18 amHarlingen Valley Intl

7h 47m

1 stop

DCA4:05 pmWashington, D.C. Reagan-National

Jan 27

DCA8:15 amWashington, D.C. Reagan-National

8h 19m

1 stop

HRL3:34 pmHarlingen Valley Intl

$429

United Airlines

Jan 26

HRL5:05 amHarlingen Valley Intl

11h 00m

2 stops

DCA5:05 pmWashington, D.C. Reagan-National

Jan 27

DCA8:15 amWashington, D.C. Reagan-National

8h 19m

1 stop

HRL3:34 pmHarlingen Valley Intl

$434

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

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

American Airlines

Sep 23

HRL5:51 amHarlingen Valley Intl

6h 52m

1 stop

DCA1:43 pmWashington, D.C. Reagan-National

Sep 27

DCA5:00 amWashington, D.C. Reagan-National

5h 58m

1 stop

HRL9:58 amHarlingen Valley Intl

$409

American Airlines

Nov 13

HRL5:40 amHarlingen Valley Intl

6h 09m

1 stop

DCA12:49 pmWashington, D.C. Reagan-National

Nov 15

DCA3:31 pmWashington, D.C. Reagan-National

8h 28m

1 stop

HRL10:59 pmHarlingen Valley Intl

$454

American Airlines

Nov 13

HRL2:26 pmHarlingen Valley Intl

8h 33m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

Nov 15

DCA10:00 amWashington, D.C. Reagan-National

9h 11m

1 stop

HRL6:11 pmHarlingen Valley Intl

$464

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

Quickest round-trip

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 12/3

4:30 pm-11:00 pm

1 stop5h 30m

Washington, D.C. Reagan-National

Mon 12/7

11:40 am-3:50 pm

1 stop5h 10m

$339

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/1

5:18 pm-11:59 pm

1 stop5h 41m

Washington, D.C. Reagan-National

Mon 10/5

8:55 am-3:59 pm

1 stop8h 04m

$339

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/8

2:13 pm-11:44 pm

1 stop8h 31m

Washington, D.C. Reagan-National

Sat 10/10

6:05 am-1:23 pm

1 stop8h 18m

$339

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/8

2:13 pm-11:44 pm

1 stop8h 31m

Washington, D.C. Reagan-National

Sat 10/10

6:10 am-1:23 pm

2 stops8h 13m

$344

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 12/3

4:30 pm-11:00 pm

1 stop5h 30m

Washington, D.C. Reagan-National

Mon 12/7

2:40 pm-9:45 pm

2 stops8h 05m

$344

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/1

1:50 pm-10:55 pm

1 stop8h 05m

Washington, D.C. Reagan-National

Mon 10/5

5:05 pm-11:40 pm

2 stops7h 35m

$369

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Wed 9/30

7:25 am-3:50 pm

2 stops7h 25m

Washington, D.C. Reagan-National

Mon 10/5

6:55 pm-11:40 pm

1 stop5h 45m

$379

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Wed 9/23

5:51 am-1:43 pm

1 stop6h 52m

Washington, D.C. Reagan-National

Sun 9/27

5:00 am-9:58 am

1 stop5h 58m

$409

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Fri 9/25

5:05 am-11:53 am

1 stop5h 48m

Washington, D.C. Reagan-National

Tue 9/29

8:20 am-1:23 pm

1 stop6h 03m

$409

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Sun 11/8

5:05 am-11:47 am

1 stop5h 42m

Washington, D.C. Reagan-National

Sat 11/14

12:50 pm-7:47 pm

1 stop7h 57m

$429

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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

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

Southwest is the most popular carrier operating from Harlingen Valley Intl to Washington, D.C. Reagan-National

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

United Airlines, American Airlines and Southwest 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 67% 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.

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	$217
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 $217. The best round-trip flight deal from Harlingen to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $339.

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.

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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 September 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 United Airlines, making up 59% of the total bookings. Other popular airlines include Southwest with 41%.

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 7.4 10,197 reviews		Search United Airlines flights
Southwest	PriceFrom $328	Free Cancellation	Rating 8.0 4,195 reviews		Search Southwest flights

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Springfield

Colonial Beach

Glen Burnie

Edgewood

Bethesda

College Park

Why use momondo?

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 $217

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 9/16. 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

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

Our best American Airlines 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 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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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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