Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Harlingen from $290

This is the cheapest round-trip 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 1/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
6:03 am - 11:26 amIAD-HRL
6h 23m1 stop
United Airlines Logo
2:00 pm - 9:12 pmHRL-IAD
6h 12m1 stop
$290United Airlines
Find Deal
Tue, Jan 6 - Tue, Apr 14
American Airlines Logo
5:37 pm - 10:51 pmIAD-HRL
6h 14m1 stop
American Airlines Logo
2:46 pm - 10:51 pmHRL-IAD
7h 05m1 stop
$370American Airlines
Find Deal
Tue, Mar 3 - Thu, Mar 5
American Airlines Logo
11:24 am - 6:16 pmIAD-HRL
7h 52m2 stops
American Airlines Logo
2:46 pm - 10:51 pmHRL-IAD
7h 05m1 stop
$375American Airlines
Find Deal
Tue, Mar 3 - Thu, Mar 5
American Airlines Logo
6:00 am - 6:14 pmIAD-HRL
13h 14m2 stops
American Airlines Logo
4:14 pm - 10:19 pmHRL-IAD
5h 05m1 stop
$408American Airlines
Find Deal
Tue, Jan 6 - Tue, Apr 14
American Airlines Logo
1:08 pm - 10:36 amIAD-HRL
22h 28m2 stops
American Airlines Logo
4:14 pm - 8:38 amHRL-IAD
15h 24m2 stops
$424American Airlines
Find Deal
Tue, Jan 6 - Tue, Apr 14
United Airlines Logo
8:20 am - 9:59 pmIAD-HRL
14h 39m2 stops
United Airlines Logo
2:00 pm - 10:36 pmHRL-IAD
7h 36m1 stop
$453United Airlines
Find Deal
Wed, Jan 7 - Mon, Apr 13
Delta Logo
6:03 am - 2:43 pmIAD-HRL
9h 40m1 stop
Delta Logo
3:39 pm - 11:52 pmHRL-IAD
7h 13m1 stop
$459Delta
Find Deal
Fri, Nov 21 - Sun, Nov 23
United Airlines Logo
6:03 am - 11:24 amIAD-HRL
6h 21m1 stop
United Airlines Logo
5:20 pm - 11:41 amHRL-IAD
17h 21m2 stops
$502United Airlines
Find Deal
Thu, Feb 26 - Sun, Mar 1
American Airlines Logo
11:24 am - 10:51 pmIAD-HRL
12h 27m2 stops
American Airlines Logo
6:00 am - 4:11 pmHRL-IAD
9h 11m2 stops
$505American Airlines
Find Deal
Tue, Mar 3 - Thu, Mar 5
United Airlines Logo
6:00 am - 10:59 amIAD-HRL
5h 59m1 stop
United Airlines Logo
5:00 pm - 11:44 pmHRL-IAD
5h 44m1 stop
$509United Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 23

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

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Harlingen, Texas flight tickets
United Airlines
Jan 6
IAD6:03 amWashington, D.C. Dulles Intl
6h 23m
1 stop
HRL11:26 amHarlingen Valley Intl
Apr 14
HRL2:00 pmHarlingen Valley Intl
6h 12m
1 stop
IAD9:12 pmWashington, D.C. Dulles Intl
$290
Find similar
United Airlines
Jan 7
IAD8:20 amWashington, D.C. Dulles Intl
14h 39m
2 stops
HRL9:59 pmHarlingen Valley Intl
Apr 13
HRL2:00 pmHarlingen Valley Intl
7h 36m
1 stop
IAD10:36 pmWashington, D.C. Dulles Intl
$453
Find similar
United Airlines
Feb 26
IAD6:03 amWashington, D.C. Dulles Intl
6h 21m
1 stop
HRL11:24 amHarlingen Valley Intl
Mar 1
HRL5:20 pmHarlingen Valley Intl
17h 21m
2 stops
IAD11:41 amWashington, D.C. Dulles Intl
$502
Find similar

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Harlingen, Texas flight tickets
American Airlines
Mar 3
IAD5:37 pmWashington, D.C. Dulles Intl
6h 14m
1 stop
HRL10:51 pmHarlingen Valley Intl
Mar 5
HRL2:46 pmHarlingen Valley Intl
7h 05m
1 stop
IAD10:51 pmWashington, D.C. Dulles Intl
$370
Find similar
American Airlines
Mar 3
IAD11:24 amWashington, D.C. Dulles Intl
7h 52m
2 stops
HRL6:16 pmHarlingen Valley Intl
Mar 5
HRL2:46 pmHarlingen Valley Intl
7h 05m
1 stop
IAD10:51 pmWashington, D.C. Dulles Intl
$375
Find similar
American Airlines
Jan 6
IAD6:00 amWashington, D.C. Dulles Intl
13h 14m
2 stops
HRL6:14 pmHarlingen Valley Intl
Apr 14
HRL4:14 pmHarlingen Valley Intl
5h 05m
1 stop
IAD10:19 pmWashington, D.C. Dulles Intl
$408
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl 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 November 4, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Harlingen, Texas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 1/6

6:03 am-11:26 am

1 stop6h 23m

Harlingen Valley Intl

Tue 4/14

2:00 pm-9:12 pm

1 stop6h 12m

$290

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 3/3

5:37 pm-10:51 pm

1 stop6h 14m

Harlingen Valley Intl

Thu 3/5

2:46 pm-10:51 pm

1 stop7h 05m

$370

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 3/3

11:24 am-6:16 pm

2 stops7h 52m

Harlingen Valley Intl

Thu 3/5

2:46 pm-10:51 pm

1 stop7h 05m

$375

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 1/6

6:00 am-6:14 pm

2 stops13h 14m

Harlingen Valley Intl

Tue 4/14

4:14 pm-10:19 pm

1 stop5h 05m

$408

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 1/6

1:08 pm-10:36 am

2 stops22h 28m

Harlingen Valley Intl

Tue 4/14

4:14 pm-8:38 am

2 stops15h 24m

$424

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Wed 1/7

8:20 am-9:59 pm

2 stops14h 39m

Harlingen Valley Intl

Mon 4/13

2:00 pm-10:36 pm

1 stop7h 36m

$453

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 11/21

6:03 am-2:43 pm

1 stop9h 40m

Harlingen Valley Intl

Sun 11/23

3:39 pm-11:52 pm

1 stop7h 13m

$459

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 2/26

6:03 am-11:24 am

1 stop6h 21m

Harlingen Valley Intl

Sun 3/1

5:20 pm-11:41 am

2 stops17h 21m

$502

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 3/3

11:24 am-10:51 pm

2 stops12h 27m

Harlingen Valley Intl

Thu 3/5

6:00 am-4:11 pm

2 stops9h 11m

$505

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 11/21

6:00 am-10:59 am

1 stop5h 59m

Harlingen Valley Intl

Sun 11/23

5:00 pm-11:44 pm

1 stop5h 44m

$509

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

See travel insights to Harlingen from

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

What is the cheapest day to depart on your flight to Harlingen, Texas?

The cheapest day to depart on your flight to Harlingen, Texas is on a Wednesday when prices can be found for as low as $389. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Harlingen, Texas for around $567.

What is the cheapest time of day to depart on your flight to Harlingen, Texas?

Our most recent data shows that the best time of day to fly to Harlingen, Texas is in the morning. Flights from Washington, D.C. Dulles Intl Airport to Harlingen, Texas during this time can be as low as $444. Flights in the afternoon are often more expensive with an average ticket price of $485.

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

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

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Harlingen, Texas. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Harlingen, Texas.
Search flight deals

  • 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 59m, 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.

An easier way to manage your Harlingen, Texas 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 12/4
Thu 12/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States