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Harlingen

$210+ Cheap flights from Dulles Intl (IAD) to Harlingen, TX (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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HRL
out 11 — out 181
sáb 10/11
sáb 10/18
1 adult, Economy
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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 setembro 11, 2025.

Round-trip from

$237
(United Airlines)

One-way from

$210
(American Airlines)

Popular in

April

Cheapest in

August

Average price

$389
From Washington, D.C. Dulles Intl to Harlingen Valley Intl
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One-way flight from Washington, D.C. Dulles Intl to Harlingen Valley Intl
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Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 setembro 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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.
ter 10/76:01 amIAD - HRL
1 stop8h 18mUnited Airlines
qui 10/95:00 amHRL - IAD
1 stop5h 27mUnited Airlines
Deal found 9/10$237
This United Airlines deal was found by Cheapflights users on 9/9. 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.
dom 9/288:30 amIAD - HRL
1 stop5h 49mUnited Airlines
ter 9/302:05 pmHRL - IAD
1 stop7h 01mUnited Airlines
Deal found 9/9$294
This American Airlines deal was found by Cheapflights users on 9/11. 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.
sex 9/265:40 pmIAD - HRL
1 stop6h 17mAmerican Airlines
ter 9/302:51 pmHRL - IAD
1 stop6h 54mAmerican Airlines
Deal found 9/11$300
This Delta deal was found by Cheapflights users on 9/9. 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.
seg 11/36:18 amIAD - HRL
1 stop9h 25mDelta
sex 11/73:39 pmHRL - IAD
1 stop7h 00mDelta
Deal found 9/9$311
This American Airlines deal was found by Cheapflights users on 9/9. 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.
dom 9/216:25 amIAD - HRL
1 stop8h 43mAmerican Airlines
ter 9/232:51 pmHRL - IAD
1 stop6h 54mAmerican Airlines
Deal found 9/9$349
This United Airlines deal was found by Cheapflights users on 9/9. 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.
qui 10/98:30 amIAD - HRL
1 stop5h 49mUnited Airlines
seg 10/135:17 pmHRL - IAD
1 stop5h 34mUnited Airlines
Deal found 9/9$366
This American Airlines deal was found by Cheapflights users on 9/9. 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.
qui 10/211:47 amIAD - HRL
1 stop7h 02mAmerican Airlines
dom 10/510:11 amHRL - IAD
1 stop23h 40mAmerican Airlines
Deal found 9/9$395
This American Airlines deal was found by Cheapflights users on 9/9. 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.
qui 9/1811:47 amIAD - HRL
1 stop7h 02mAmerican Airlines
seg 9/222:51 pmHRL - IAD
1 stop6h 57mAmerican Airlines
Deal found 9/9$399
This American Airlines deal was found by Cheapflights users on 9/9. 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.
seg 11/36:04 amIAD - HRL
1 stop6h 36mAmerican Airlines
sex 11/76:40 pmHRL - IAD
2 stops17h 32mAmerican Airlines
Deal found 9/9$408
This American Airlines deal was found by Cheapflights users on 9/11. 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.
dom 9/286:25 amIAD - HRL
1 stop8h 43mAmerican Airlines
ter 9/302:51 pmHRL - IAD
1 stop6h 54mAmerican Airlines
Deal found 9/11$414
This United Airlines deal was found by Cheapflights users on 9/9. 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.
sex 10/1010:19 pmIAD - HRL
2 stops16h 00mUnited Airlines
ter 10/145:17 pmHRL - IAD
1 stop5h 34mUnited Airlines
Deal found 9/9$419

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 setembro 11, 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

ter 10/7

6:01 am-1:19 pm

1 stop8h 18m

Harlingen Valley Intl

qui 10/9

5:00 am-11:27 am

1 stop5h 27m

$237

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

dom 9/28

8:30 am-1:19 pm

1 stop5h 49m

Harlingen Valley Intl

ter 9/30

2:05 pm-10:06 pm

1 stop7h 01m

$294

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

seg 11/3

6:18 am-2:43 pm

1 stop9h 25m

Harlingen Valley Intl

sex 11/7

3:39 pm-11:39 pm

1 stop7h 00m

$311

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

qui 10/9

8:30 am-1:19 pm

1 stop5h 49m

Harlingen Valley Intl

seg 10/13

5:17 pm-11:51 pm

1 stop5h 34m

$366

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

ter 3/3

8:52 am-6:28 pm

2 stops10h 36m

Harlingen Valley Intl

qui 3/5

10:05 am-4:05 pm

1 stop5h 00m

$372

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

ter 3/3

6:00 am-7:29 pm

3 stops14h 29m

Harlingen Valley Intl

qui 3/5

2:00 pm-10:36 pm

1 stop7h 36m

$428

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

qui 10/2

8:20 am-11:18 pm

2 stops15h 58m

Harlingen Valley Intl

dom 10/5

7:00 am-11:51 pm

1 stop15h 51m

$454

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

seg 9/22

5:40 pm-10:57 pm

1 stop6h 17m

$210

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

sáb 10/18

6:18 am-2:43 pm

1 stop9h 25m

$220

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

sáb 10/18

8:15 am-7:41 pm

2 stops12h 26m

$313

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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 setembro 11, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Harlingen, Texas, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 $237, United Airlines can have you in Harlingen, Texas from Washington, D.C. Dulles Intl Airport in 8h 18m. 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.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Harlingen, Texas one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $210. Delta flights start at $220 while deals on United Airlines start at $313 one-way.

  • 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.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Harlingen, Texas?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Harlingen, Texas (average of $267). Flying from Washington, D.C. Dulles Intl Airport to Harlingen, Texas in June is currently the most expensive (average of $382). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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