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

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

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

As of September 2026, there is 1 operator available to choose from for flights from Washington, D.C. Reagan-National Airport to Harlingen Valley Intl Airport.

What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

The travel and health documents you'll need for your trip to Harlingen Valley Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Harlingen Valley Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$112 Cheap Flights from Washington, D.C. Reagan-National Airport to Harlingen in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Reagan-National Airport to Harlingen

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

7h 57m1 stop Houston George Bush Intcntl

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

5h 42m1 stop Houston George Bush Intcntl

$313United Airlines

Tue, Nov 10 - Wed, Nov 11

6:05 am - 12:15 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 10m1 stop Houston Hobby

4:45 pm - 11:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 10m1 stop Houston Hobby

$320Southwest

Fri, Oct 30 - Sun, Nov 1

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

5h 45m1 stop Houston Hobby

5:50 am - 2:00 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

7h 10m2 stops Houston Hobby Dallas Love Field

$355Southwest

Fri, Oct 30 - Sun, Nov 1

6:00 am - 1:23 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 23m1 stop Houston George Bush Intcntl

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

5h 48m1 stop Houston George Bush Intcntl

$359United Airlines

Wed, Oct 14 - Wed, Oct 21

4:44 pm - 9:52 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 08m1 stop Houston George Bush Intcntl

2:00 pm - 10:14 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

7h 14m1 stop Houston George Bush Intcntl

$359United Airlines

Tue, Oct 6 - Wed, Oct 21

6:00 am - 1:23 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 23m1 stop Houston George Bush Intcntl

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

5h 48m1 stop Houston George Bush Intcntl

$359United Airlines

Wed, Oct 14 - Tue, Oct 20

6:05 am - 5:35 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

12h 30m1 stop Dallas Love Field

1:00 pm - 8:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 55m2 stops Houston Hobby Atlanta Hartsfield-Jackson

$370Southwest

Wed, Oct 14 - Tue, Oct 20

6:05 am - 12:15 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 10m1 stop Houston Hobby

6:00 am - 12:20 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 20m1 stop Houston Hobby

$379Southwest

Fri, Oct 23 - Sun, Oct 25

3:35 pm - 11:40 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

9h 05m2 stops Oklahoma City Will Rogers World Houston Hobby

1:00 pm - 8:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 55m2 stops Houston Hobby Dallas Love Field

$393Southwest

Fri, Oct 30 - Sun, Nov 1

4:00 pm - 10:00 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 00m2 stops Nashville Intl Houston Hobby

4:35 pm - 11:40 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 05m1 stop Houston Hobby

$399Southwest

Tue, Oct 6 - Wed, Oct 21

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 1:24 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 24m1 stop Houston George Bush Intcntl

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

5h 41m1 stop Houston George Bush Intcntl

$456United Airlines

Mon, Sep 21 - Tue, Sep 22

6:50 am - 11:20 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 30m1 stop Houston Hobby

4:25 pm - 11:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 30m2 stops Houston Hobby Nashville Intl

$461Southwest

Mon, Sep 21 - Tue, Sep 22

8:20 am - 1:24 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 04m1 stop Houston George Bush Intcntl

1:59 pm - 10:13 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

7h 14m1 stop Houston George Bush Intcntl

$506United Airlines

Wed, Sep 16 - Fri, Sep 18

7:25 am - 2:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 25m2 stops Atlanta Hartsfield-Jackson Dallas Love Field

4:40 pm - 10:25 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

4h 45m1 stop Houston Hobby

$511Southwest

Wed, Sep 16 - Fri, Sep 18

2:40 pm - 9:52 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 12m1 stop Houston George Bush Intcntl

1:59 pm - 10:13 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

7h 14m1 stop Houston George Bush Intcntl

$543United Airlines

Wed, Sep 16 - Sat, Sep 19

4:05 pm - 10:40 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 35m2 stops Dallas Love Field Houston Hobby

4:25 pm - 11:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 30m2 stops Houston Hobby Nashville Intl

$546Southwest

Mon, Sep 21 - Tue, Sep 22

12:57 pm - 7:39 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 42m1 stop Houston George Bush Intcntl

5:05 am - 11:54 amHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 49m1 stop Houston George Bush Intcntl

$566United Airlines

Wed, Sep 16 - Sun, Sep 20

2:40 pm - 7:39 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 59m1 stop Houston George Bush Intcntl

5:05 am - 11:54 amHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 49m1 stop Houston George Bush Intcntl

$566United Airlines

Wed, Sep 16 - Fri, Sep 18

7:25 am - 2:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 25m2 stops Atlanta Hartsfield-Jackson Dallas Love Field

6:20 am - 3:50 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 30m2 stops Austin Bergstrom Nashville Intl

$566Southwest

Wed, Sep 16 - Fri, Sep 18

6:00 am - 1:24 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 24m1 stop Houston George Bush Intcntl

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

5h 41m1 stop Houston George Bush Intcntl

$596United Airlines

Thu, Sep 17 - Sat, Sep 19

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

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

Southwest

Oct 30

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

7h 10m

1 stop

HRL12:15 pmHarlingen Valley Intl

Nov 1

HRL4:45 pmHarlingen Valley Intl

6h 10m

1 stop

DCA11:55 pmWashington, D.C. Reagan-National

$320

Southwest

Dec 2

DCA9:00 amWashington, D.C. Reagan-National

9h 20m

2 stops

HRL5:20 pmHarlingen Valley Intl

Dec 10

HRL4:30 pmHarlingen Valley Intl

5h 30m

1 stop

DCA11:00 pmWashington, D.C. Reagan-National

$344

Southwest

Oct 30

DCA6:55 pmWashington, D.C. Reagan-National

5h 45m

1 stop

HRL11:40 pmHarlingen Valley Intl

Nov 1

HRL5:50 amHarlingen Valley Intl

7h 10m

2 stops

DCA2:00 pmWashington, D.C. Reagan-National

$355

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

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

American Airlines

Oct 14

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

6h 08m

1 stop

HRL10:08 amHarlingen Valley Intl

Oct 21

HRL2:46 pmHarlingen Valley Intl

8h 13m

2 stops

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

$528

American Airlines

Oct 14

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

6h 08m

1 stop

HRL10:08 amHarlingen Valley Intl

Oct 21

HRL2:46 pmHarlingen Valley Intl

8h 13m

2 stops

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

$545

American Airlines

Oct 14

DCA3:15 pmWashington, D.C. Reagan-National

8h 35m

2 stops

HRL10:50 pmHarlingen Valley Intl

Oct 24

HRL2:46 pmHarlingen Valley Intl

8h 13m

1 stop

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

$605

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Tue 11/10

12:50 pm-7:47 pm

1 stop7h 57m

Harlingen Valley Intl

Wed 11/11

5:05 am-11:47 am

1 stop5h 42m

$313

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Fri 10/30

6:05 am-12:15 pm

1 stop7h 10m

Harlingen Valley Intl

Sun 11/1

4:45 pm-11:55 pm

1 stop6h 10m

$320

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Fri 10/30

6:55 pm-11:40 pm

1 stop5h 45m

Harlingen Valley Intl

Sun 11/1

5:50 am-2:00 pm

2 stops7h 10m

$355

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Wed 10/14

6:00 am-1:23 pm

1 stop8h 23m

Harlingen Valley Intl

Wed 10/21

5:05 am-11:53 am

1 stop5h 48m

$359

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Tue 10/6

4:44 pm-9:52 pm

1 stop6h 08m

Harlingen Valley Intl

Wed 10/21

2:00 pm-10:14 pm

1 stop7h 14m

$359

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Wed 10/14

6:00 am-1:23 pm

1 stop8h 23m

Harlingen Valley Intl

Tue 10/20

5:05 am-11:53 am

1 stop5h 48m

$359

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Wed 10/14

6:05 am-5:35 pm

1 stop12h 30m

Harlingen Valley Intl

Tue 10/20

1:00 pm-8:55 pm

2 stops6h 55m

$370

Quickest round-trip

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Fri 10/23

6:05 am-12:15 pm

1 stop7h 10m

Harlingen Valley Intl

Sun 10/25

6:00 am-12:20 pm

1 stop5h 20m

$379

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Fri 10/30

3:35 pm-11:40 pm

2 stops9h 05m

Harlingen Valley Intl

Sun 11/1

1:00 pm-8:55 pm

2 stops6h 55m

$393

Washington, D.C.Harlingen

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

DCAHRL

Washington, D.C. Reagan-National

Tue 10/6

4:00 pm-10:00 pm

2 stops7h 00m

Harlingen Valley Intl

Wed 10/21

4:35 pm-11:40 pm

1 stop6h 05m

$399

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 Washington, D.C. Reagan-National Airport to Harlingen

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 Harlingen?

If you aren’t able to travel during the month of November, then book flights to Harlingen from Washington, D.C. Reagan-National Airport during September instead. Flights to Harlingen in September, while not as cheap as those in November, still average around $0.

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

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

Estimated round-trip price

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

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

Best Price Found	$112
Fastest flight time	5h 10m
Direct flights	None

The best one-way flight to Harlingen from Washington, D.C. Reagan-National Airport in the past 72 hours is $112. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to Harlingen found on momondo in the last 72 hours is $313.

The fastest flight from Washington, D.C. Reagan-National Airport to Harlingen takes 5h 10m

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

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

How far is Washington, D.C. Reagan-National to Harlingen Valley Intl by plane?
The distance between Washington, D.C. Reagan-National and Harlingen Valley Intl is about 1480.9 mi. 5h 10m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Harlingen Valley Intl Airport?
Prices for flights from Washington, D.C. Reagan-National Airport to Harlingen Valley Intl Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Harlingen Valley Intl Airport?
As of September 2026, there is 1 operator available to choose from for flights from Washington, D.C. Reagan-National Airport to Harlingen Valley Intl Airport.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Harlingen Valley Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Harlingen Valley Intl Airport.
What documentation or ID do you need to fly to Harlingen Valley Intl Airport?
The travel and health documents you'll need for your trip to Harlingen Valley Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Harlingen Valley Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. Reagan-National Airport to Harlingen?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. Reagan-National Airport to Harlingen is United Airlines, representing 100% of all bookings.

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

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.4 10,208 reviews		Search United Airlines flights

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

Finding the right flight to Harlingen from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Harlingen quick and easy, saving you time and money.

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

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

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

Once all potential Washington, D.C. to Harlingen flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Washington, D.C. to Harlingen now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Harlingen and let you know when they change.

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Cheap flights from Washington, D.C. Reagan-National Airport to Harlingen from $112

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

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

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

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

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

What is the cheapest month to fly to Harlingen?

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

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

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

Best Price Found

Fastest flight time

Direct flights

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

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

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

Why use momondo?

An easier way to manage your Harlingen 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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