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Cheap flights from Washington, D.C. Reagan-National Airport to Harlingen from $205

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Harlingen departing on 2/17. 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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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
1:55 pm - 9:50 pm
DCA
-
HRL
8h 55m
1 stop
Southwest Logo
5:45 am - 12:05 pm
HRL
-
DCA
5h 20m
1 stop
$389Southwest
Wed, Feb 25 - Sun, Mar 1
Southwest Logo
1:00 pm - 9:50 pm
DCA
-
HRL
9h 50m
2 stops
Southwest Logo
5:45 am - 12:05 pm
HRL
-
DCA
5h 20m
1 stop
$394Southwest
Wed, Feb 25 - Sun, Mar 1
Southwest Logo
1:55 pm - 9:50 pm
DCA
-
HRL
8h 55m
1 stop
Southwest Logo
5:45 am - 12:05 pm
HRL
-
DCA
5h 20m
1 stop
$409Southwest
Wed, Feb 25 - Sun, Mar 1
Southwest Logo
1:00 pm - 8:50 pm
DCA
-
HRL
8h 50m
2 stops
Southwest Logo
5:45 am - 12:05 pm
HRL
-
DCA
5h 20m
1 stop
$414Southwest
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
12:32 pm - 7:56 pm
DCA
-
HRL
8h 24m
1 stop
United Airlines Logo
5:25 pm - 11:32 pm
HRL
-
DCA
5h 07m
1 stop
$484United Airlines
Sat, Mar 7 - Sat, Mar 14
Southwest Logo
1:00 pm - 8:50 pm
DCA
-
HRL
8h 50m
2 stops
Southwest Logo
5:45 am - 4:00 pm
HRL
-
DCA
9h 15m
2 stops
$502Southwest
Wed, Feb 25 - Sun, Mar 1
Southwest Logo
3:35 pm - 10:10 pm
DCA
-
HRL
7h 35m
2 stops
Southwest Logo
6:20 am - 2:30 pm
HRL
-
DCA
7h 10m
2 stops
$553Southwest
Sun, Mar 1 - Sun, Mar 8
Southwest Logo
6:55 am - 2:55 pm
DCA
-
HRL
9h 00m
1 stop
Southwest Logo
6:20 am - 6:00 pm
HRL
-
DCA
10h 40m
1 stop
$557Southwest
Sun, Mar 1 - Sun, Mar 8
United Airlines Logo
7:59 pm - 11:23 am
DCA
-
HRL
16h 24m
1 stop
United Airlines Logo
5:18 pm - 11:59 pm
HRL
-
DCA
5h 41m
1 stop
$611United Airlines
Sun, Mar 29 - Mon, Mar 30
American Airlines Logo
4:59 pm - 11:03 pm
DCA
-
HRL
7h 04m
1 stop
American Airlines Logo
6:00 am - 3:59 pm
HRL
-
DCA
8h 59m
2 stops
$669American Airlines
Sat, Mar 7 - Sat, Mar 14

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

Our best Southwest deals on Washington, D.C. Reagan-National Airport to Harlingen, Texas flight tickets
Southwest
Feb 25
DCA1:55 pmWashington, D.C. Reagan-National
8h 55m
1 stop
HRL9:50 pmHarlingen Valley Intl
Mar 1
HRL5:45 amHarlingen Valley Intl
5h 20m
1 stop
DCA12:05 pmWashington, D.C. Reagan-National
$389
Southwest
Feb 25
DCA1:00 pmWashington, D.C. Reagan-National
9h 50m
2 stops
HRL9:50 pmHarlingen Valley Intl
Mar 1
HRL5:45 amHarlingen Valley Intl
5h 20m
1 stop
DCA12:05 pmWashington, D.C. Reagan-National
$394
Southwest
Feb 25
DCA1:55 pmWashington, D.C. Reagan-National
8h 55m
1 stop
HRL9:50 pmHarlingen Valley Intl
Mar 1
HRL5:45 amHarlingen Valley Intl
5h 20m
1 stop
DCA12:05 pmWashington, D.C. Reagan-National
$409

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

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Harlingen, Texas flight tickets
United Airlines
Mar 7
DCA12:32 pmWashington, D.C. Reagan-National
8h 24m
1 stop
HRL7:56 pmHarlingen Valley Intl
Mar 14
HRL5:25 pmHarlingen Valley Intl
5h 07m
1 stop
DCA11:32 pmWashington, D.C. Reagan-National
$484
United Airlines
Mar 29
DCA7:59 pmWashington, D.C. Reagan-National
16h 24m
1 stop
HRL11:23 amHarlingen Valley Intl
Mar 30
HRL5:18 pmHarlingen Valley Intl
5h 41m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
$611
United Airlines
Mar 29
DCA6:00 amWashington, D.C. Reagan-National
16h 59m
1 stop
HRL9:59 pmHarlingen Valley Intl
Mar 30
HRL5:18 pmHarlingen Valley Intl
5h 41m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
$692

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Harlingen, Texas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Harlingen, Texas 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

Wed 2/25

1:55 pm-9:50 pm

1 stop8h 55m

Harlingen Valley Intl

Sun 3/1

5:45 am-12:05 pm

1 stop5h 20m

$389

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Wed 2/25

1:00 pm-9:50 pm

2 stops9h 50m

Harlingen Valley Intl

Sun 3/1

5:45 am-12:05 pm

1 stop5h 20m

$394

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Wed 2/25

1:55 pm-9:50 pm

1 stop8h 55m

Harlingen Valley Intl

Sun 3/1

5:45 am-12:05 pm

1 stop5h 20m

$409

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Wed 2/25

1:00 pm-8:50 pm

2 stops8h 50m

Harlingen Valley Intl

Sun 3/1

5:45 am-12:05 pm

1 stop5h 20m

$414

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 3/7

12:32 pm-7:56 pm

1 stop8h 24m

Harlingen Valley Intl

Sat 3/14

5:25 pm-11:32 pm

1 stop5h 07m

$484

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Wed 2/25

1:00 pm-8:50 pm

2 stops8h 50m

Harlingen Valley Intl

Sun 3/1

5:45 am-4:00 pm

2 stops9h 15m

$502

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sun 3/1

3:35 pm-10:10 pm

2 stops7h 35m

Harlingen Valley Intl

Sun 3/8

6:20 am-2:30 pm

2 stops7h 10m

$553

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sun 3/1

6:55 am-2:55 pm

1 stop9h 00m

Harlingen Valley Intl

Sun 3/8

6:20 am-6:00 pm

1 stop10h 40m

$557

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sun 3/29

7:59 pm-11:23 am

1 stop16h 24m

Harlingen Valley Intl

Mon 3/30

5:18 pm-11:59 pm

1 stop5h 41m

$611

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

Sat 3/7

4:59 pm-11:03 pm

1 stop7h 04m

Harlingen Valley Intl

Sat 3/14

6:00 am-3:59 pm

2 stops8h 59m

$669

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Harlingen from

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

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

Can stopping save me money on Washington, D.C. Reagan-National Airport to Harlingen, Texas flights?

You could potentially save up to 27% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Harlingen, Texas flight.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to Harlingen, Texas 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, Texas (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, Texas

Fastest flight time

8h 24m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Harlingen, Texas takes 8h 24m
There are no direct flights from Washington, D.C. Reagan-National Airport to Harlingen, Texas. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Harlingen, Texas.
Search flight deals

  • 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. 8h 24m 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 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.

Why use momondo?

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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