HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Harlingen

$206+ Cheap flights from Dulles Intl (IAD) to Harlingen (HRL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HRL
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Harlingen with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dulles Intl to Harlingen

Cheapest flights from Dulles Intl to Harlingen
Explore the most affordable flight options available from Dulles Intl to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:02 pm
IAD
-
HRL
1 stop7h 50m
United Airlines
Fri 8/285:18 pm
HRL
-
IAD
1 stop6h 12m
United Airlines
Deal found 7/23$334
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:23 am
IAD
-
HRL
1 stop7h 00m
Delta
Sat 11/72:13 pm
HRL
-
IAD
1 stop8h 13m
Delta
Deal found 7/25$339
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
IAD
-
HRL
1 stop7h 54m
United Airlines
Mon 8/241:59 pm
HRL
-
IAD
1 stop5h 57m
United Airlines
Deal found 7/26$357
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:30 am
IAD
-
HRL
1 stop7h 54m
United Airlines
Mon 9/145:18 pm
HRL
-
IAD
1 stop5h 37m
United Airlines
Deal found 7/23$419
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:31 am
IAD
-
HRL
1 stop5h 53m
United Airlines
Mon 8/315:18 pm
HRL
-
IAD
1 stop5h 37m
United Airlines
Deal found 7/27$429
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:10 am
IAD
-
HRL
2 stops13h 03m
American Airlines
Wed 8/195:54 am
HRL
-
IAD
2 stops16h 01m
American Airlines
Deal found 7/22$490
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:35 pm
IAD
-
HRL
2 stops13h 24m
United Airlines
Sat 12/512:10 pm
HRL
-
IAD
1 stop8h 02m
United Airlines
Deal found 7/23$526

Find flight deals from Dulles Intl to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Harlingen (HRL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$334
(United Airlines)

One-way from

$206
(American Airlines)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Harlingen Valley Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Harlingen Valley Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to Harlingen Valley Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Harlingen Valley Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated July 27, 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

Mon 8/17

6:30 am-1:24 pm

1 stop7h 54m

Harlingen Valley Intl

Mon 8/24

1:59 pm-8:56 pm

1 stop5h 57m

$357

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Wed 12/2

8:25 am-3:34 pm

1 stop8h 09m

Harlingen Valley Intl

Sat 12/5

12:10 pm-9:12 pm

1 stop8h 02m

$419
Quickest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 8/28

8:31 am-1:24 pm

1 stop5h 53m

Harlingen Valley Intl

Mon 8/31

5:18 pm-11:55 pm

1 stop5h 37m

$429

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 8/27

8:31 am-1:24 pm

1 stop5h 53m

Harlingen Valley Intl

Mon 8/31

5:18 pm-11:55 pm

1 stop5h 37m

$429
Cheapest one-way
Quickest one-way

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 8/13

6:30 am-1:24 pm

1 stop7h 54m

$233

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 8/1

12:50 pm-7:49 pm

1 stop7h 59m

$306

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 9/12

8:30 am-7:39 pm

2 stops12h 09m

$310

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sun 12/20

6:05 am-2:18 pm

1 stop9h 13m

$405

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 8/6

7:57 am-4:27 pm

2 stops9h 30m

$417

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Mon 12/21

10:42 pm-7:50 pm

1 stop22h 08m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Compare providers for flights from Dulles Intl to Harlingen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Harlingen in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Harlingen flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Harlingen flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Harlingen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Harlingen flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Harlingen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Harlingen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Harlingen from Washington, D.C. Dulles Intl?

    Located just 3.7 mi from the city center, Harlingen Valley Intl is the airport most travelers will use when flying to Harlingen from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Valley Intl (HRL) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Harlingen?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Harlingen in 7h 54m. Fly via Delta or United Airlines to get the fastest option. Washington, D.C. Dulles Intl Airport and Harlingen are separated by a distance of 1462 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Dulles Intl to Harlingen that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Harlingen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Harlingen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Harlingen.

  • Can I find deals for business class flights from Dulles Intl to Harlingen?

    Yes. Cheapflights offers flight deals from Dulles Intl to Harlingen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.