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Cheap flights from Washington, D.C. Dulles Intl Airport to Harlingen from $136

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. Dulles Intl Airport to Harlingen departing on 4/28. 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. Dulles Intl Airport to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:30 am - 1:30 pm
IAD
-
HRL
8h 00m
1 stop
United Airlines Logo
5:20 pm - 12:31 am
HRL
-
IAD
6h 11m
1 stop
$283United Airlines
Sat, May 30 - Wed, Jun 3
United Airlines Logo
2:53 pm - 9:54 pm
IAD
-
HRL
8h 01m
1 stop
United Airlines Logo
5:20 pm - 12:31 am
HRL
-
IAD
6h 11m
1 stop
$301United Airlines
Wed, Jun 10 - Tue, Jun 16
United Airlines Logo
6:00 am - 11:23 am
IAD
-
HRL
6h 23m
1 stop
United Airlines Logo
5:18 pm - 11:59 pm
HRL
-
IAD
5h 41m
1 stop
$334United Airlines
Mon, Apr 27 - Thu, Apr 30
United Airlines Logo
3:02 pm - 7:29 pm
IAD
-
HRL
5h 27m
1 stop
United Airlines Logo
5:15 am - 11:28 am
HRL
-
IAD
5h 13m
1 stop
$352United Airlines
Sat, Aug 15 - Mon, Aug 17
United Airlines Logo
2:53 pm - 9:54 pm
IAD
-
HRL
8h 01m
1 stop
United Airlines Logo
5:20 pm - 12:31 am
HRL
-
IAD
6h 11m
1 stop
$359United Airlines
Wed, Jun 10 - Tue, Jun 16
United Airlines Logo
3:02 pm - 9:44 pm
IAD
-
HRL
7h 42m
1 stop
United Airlines Logo
5:16 pm - 12:29 am
HRL
-
IAD
6h 13m
1 stop
$373United Airlines
Tue, Aug 11 - Sat, Aug 15
American Airlines Logo
11:59 am - 7:34 pm
IAD
-
HRL
8h 35m
1 stop
American Airlines Logo
10:43 am - 12:13 am
HRL
-
IAD
12h 30m
2 stops
$389American Airlines
Wed, Jun 10 - Tue, Jun 16
United Airlines Logo
8:30 am - 4:04 pm
IAD
-
HRL
8h 34m
1 stop
United Airlines Logo
12:05 pm - 8:56 pm
HRL
-
IAD
7h 51m
1 stop
$398United Airlines
Tue, Apr 28 - Wed, Apr 29
United Airlines Logo
6:00 am - 11:23 am
IAD
-
HRL
6h 23m
1 stop
United Airlines Logo
12:05 pm - 8:56 pm
HRL
-
IAD
7h 51m
1 stop
$435United Airlines
Tue, Apr 28 - Wed, Apr 29
United Airlines Logo
6:30 am - 1:30 pm
IAD
-
HRL
8h 00m
1 stop
United Airlines Logo
5:20 pm - 12:31 am
HRL
-
IAD
6h 11m
1 stop
$444United Airlines
Sat, May 30 - Sat, Jun 6

United Airlines flights from Washington, D.C. Dulles Intl Airport to Harlingen

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Harlingen flight tickets
United Airlines
May 30
IAD6:30 amWashington, D.C. Dulles Intl
8h 00m
1 stop
HRL1:30 pmHarlingen Valley Intl
Jun 3
HRL5:20 pmHarlingen Valley Intl
6h 11m
1 stop
IAD12:31 amWashington, D.C. Dulles Intl
$283
United Airlines
Jun 10
IAD2:53 pmWashington, D.C. Dulles Intl
8h 01m
1 stop
HRL9:54 pmHarlingen Valley Intl
Jun 16
HRL5:20 pmHarlingen Valley Intl
6h 11m
1 stop
IAD12:31 amWashington, D.C. Dulles Intl
$301
United Airlines
Apr 27
IAD6:00 amWashington, D.C. Dulles Intl
6h 23m
1 stop
HRL11:23 amHarlingen Valley Intl
Apr 30
HRL5:18 pmHarlingen Valley Intl
5h 41m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
$334

American Airlines flights from Washington, D.C. Dulles Intl Airport to Harlingen

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Harlingen flight tickets
American Airlines
Jun 10
IAD11:59 amWashington, D.C. Dulles Intl
8h 35m
1 stop
HRL7:34 pmHarlingen Valley Intl
Jun 16
HRL10:43 amHarlingen Valley Intl
12h 30m
2 stops
IAD12:13 amWashington, D.C. Dulles Intl
$389
American Airlines
Apr 11
IAD9:19 amWashington, D.C. Dulles Intl
11h 14m
2 stops
HRL7:33 pmHarlingen Valley Intl
Apr 13
HRL10:47 amHarlingen Valley Intl
12h 12m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
$420
American Airlines
Apr 11
IAD5:59 pmWashington, D.C. Dulles Intl
5h 52m
1 stop
HRL10:51 pmHarlingen Valley Intl
Apr 18
HRL10:47 amHarlingen Valley Intl
5h 22m
1 stop
IAD5:09 pmWashington, D.C. Dulles Intl
$441

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Harlingen 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 April 10, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 5/30

6:30 am-1:30 pm

1 stop8h 00m

Harlingen Valley Intl

Wed 6/3

5:20 pm-12:31 am

1 stop6h 11m

$283

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Wed 6/10

2:53 pm-9:54 pm

1 stop8h 01m

Harlingen Valley Intl

Tue 6/16

5:20 pm-12:31 am

1 stop6h 11m

$301

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Mon 4/27

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Thu 4/30

5:18 pm-11:59 pm

1 stop5h 41m

$334
Quickest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 8/15

3:02 pm-7:29 pm

1 stop5h 27m

Harlingen Valley Intl

Mon 8/17

5:15 am-11:28 am

1 stop5h 13m

$352

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Wed 6/10

2:53 pm-9:54 pm

1 stop8h 01m

Harlingen Valley Intl

Tue 6/16

5:20 pm-12:31 am

1 stop6h 11m

$359

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 8/11

3:02 pm-9:44 pm

1 stop7h 42m

Harlingen Valley Intl

Sat 8/15

5:16 pm-12:29 am

1 stop6h 13m

$373

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Wed 6/10

11:59 am-7:34 pm

1 stop8h 35m

Harlingen Valley Intl

Tue 6/16

10:43 am-12:13 am

2 stops12h 30m

$389

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 4/28

8:30 am-4:04 pm

1 stop8h 34m

Harlingen Valley Intl

Wed 4/29

12:05 pm-8:56 pm

1 stop7h 51m

$398

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 4/28

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Wed 4/29

12:05 pm-8:56 pm

1 stop7h 51m

$435

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 5/30

6:30 am-1:30 pm

1 stop8h 00m

Harlingen Valley Intl

Sat 6/6

5:20 pm-12:31 am

1 stop6h 11m

$444

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Harlingen from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl 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

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Harlingen flights?

You could potentially save up to 5% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Harlingen flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Harlingen

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl 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. Dulles Intl Airport to Harlingen (IAD to HRL) flight deals and tips

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

Fastest flight time

5h 56m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Harlingen takes 5h 56m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Harlingen. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Harlingen.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Harlingen

  • How far is Washington, D.C. Dulles Intl to Harlingen Valley Intl by plane?

    Washington, D.C. Dulles Intl and Harlingen Valley Intl are 1465.2 mi apart from one another. Flights usually cover this in 5h 56m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Harlingen Valley Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Harlingen Valley Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl 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?

Yes. momondo allows you to filter the results for Washington, D.C. to Harlingen flights to just show those with flexible booking policies.

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?

Yes momondo offers price alerts on flights to Harlingen from Washington, D.C.. 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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