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Harlingen

$285+ Cheap flights from Dulles Intl (IAD) to Harlingen, TX (HRL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HRL
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Find 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 October 27, 2025.

This Delta deal was found by Cheapflights users on 10/25. 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 12/66:03 amIAD - HRL
1 stop10h 07mDelta
Sat 12/134:05 pmHRL - IAD
1 stop6h 57mDelta
Deal found 10/25$285
This Delta deal was found by Cheapflights users on 10/25. 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.
Wed 10/296:18 amIAD - HRL
1 stop9h 25mDelta
Wed 11/53:39 pmHRL - IAD
1 stop7h 00mDelta
Deal found 10/25$429
This American Airlines deal was found by Cheapflights users on 10/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:09 amIAD - HRL
2 stops10h 56mAmerican Airlines
Wed 11/55:40 amHRL - IAD
2 stops10h 09mAmerican Airlines
Deal found 10/25$439
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2512:50 pmIAD - HRL
1 stop7h 51mUnited Airlines
Mon 10/275:00 pmHRL - IAD
1 stop5h 44mUnited Airlines
Deal found 10/25$519
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:45 amIAD - HRL
1 stop6h 28mUnited Airlines
Tue 10/2812:10 pmHRL - IAD
2 stops18h 17mUnited Airlines
Deal found 10/25$660
This American Airlines deal was found by Cheapflights users on 10/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:25 pmIAD - HRL
2 stops14h 11mAmerican Airlines
Tue 10/286:37 pmHRL - IAD
2 stops14h 18mAmerican Airlines
Deal found 10/25$716
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:25 pmIAD - HRL
2 stops13h 34mUnited Airlines
Fri 11/2812:10 pmHRL - IAD
1 stop9h 02mUnited Airlines
Deal found 10/25$740
This American Airlines deal was found by Cheapflights users on 10/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:25 pmIAD - HRL
2 stops14h 11mAmerican Airlines
Mon 10/2710:06 amHRL - IAD
2 stops12h 47mAmerican Airlines
Deal found 10/25$763

Cheap 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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$285
(Delta)
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
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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 October 27, 2025.
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

Dulles Intl

Fly to

Harlingen

Route

Depart

Return

Price

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 12/6

6:03 am-3:10 pm

1 stop10h 07m

Harlingen Valley Intl

Sat 12/13

4:05 pm-12:02 am

1 stop6h 57m

$285

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 1/10

6:15 am-2:29 pm

1 stop9h 14m

Harlingen Valley Intl

Sun 2/1

3:00 pm-11:35 pm

1 stop7h 35m

$339

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 1/10

6:00 am-2:46 pm

2 stops9h 46m

Harlingen Valley Intl

Sun 2/1

11:06 am-11:11 pm

2 stops11h 05m

$354

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Mon 3/9

6:40 am-11:35 am

1 stop5h 55m

Harlingen Valley Intl

Wed 3/11

4:12 pm-10:15 pm

1 stop5h 03m

$359

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 3/3

6:32 am-11:39 am

1 stop6h 07m

Harlingen Valley Intl

Thu 3/5

10:05 am-4:05 pm

1 stop5h 00m

$375

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 3/10

1:00 pm-7:29 pm

1 stop7h 29m

Harlingen Valley Intl

Thu 3/12

5:16 pm-11:59 pm

1 stop5h 43m

$379

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 12/25

6:05 am-2:18 pm

1 stop9h 13m

$335

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 12/25

7:11 pm-8:58 am

3 stops38h 47m

$359

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 12/26

6:08 am-9:59 pm

1 stop16h 51m

$378

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 12/26

6:05 am-2:18 pm

1 stop9h 13m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 14 results
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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, Texas flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Harlingen, Texas flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Harlingen, Texas 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, Texas flights, Cheapflights users trust eDreams the most. eDreams 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, Texas 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Harlingen

What is the cheapest time of day to fly from IAD to HRL?

Find hourly flight availability from Dulles Intl to Harlingen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Harlingen, Texas at noon. By choosing this option you can save up to 56% on the cost of your flight, compared to a flight in the afternoon.

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, Texas?

    For as low as $354, Delta can have you in Harlingen, Texas from Washington, D.C. Dulles Intl Airport in 9h 46m. The distance from Washington, D.C. Dulles Intl Airport to Harlingen, Texas is about 1462 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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

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Alternative routes for Dulles Intl to Harlingen

See prices for flight routes from nearby airports that may be better suited for you.
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