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Harlingen

$291+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HRL
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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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 March 12, 2026.

This United Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 5/612:50 pm
IAD
-
HRL
1 stop8h 10m
United Airlines
Sat 5/95:18 pm
HRL
-
IAD
1 stop5h 41m
United Airlines
Deal found 3/10$291
This American Airlines deal was found by Cheapflights users on 3/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 am
IAD
-
HRL
1 stop8h 17m
American Airlines
Sat 5/910:47 am
HRL
-
IAD
2 stops12h 12m
American Airlines
Deal found 3/10$306
This United Airlines deal was found by Cheapflights users on 3/8. 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 5/302:53 pm
IAD
-
HRL
1 stop8h 01m
United Airlines
Wed 6/35:20 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 3/8$309
This Delta deal was found by Cheapflights users on 3/8. 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.
Mon 4/136:00 am
IAD
-
HRL
1 stop10h 08m
Delta
Fri 4/174:02 pm
HRL
-
IAD
1 stop6h 30m
Delta
Deal found 3/8$344
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Tue 4/148:30 am
IAD
-
HRL
1 stop8h 34m
United Airlines
Wed 4/155:18 pm
HRL
-
IAD
1 stop5h 41m
United Airlines
Deal found 3/8$351
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Mon 4/137:00 am
IAD
-
HRL
1 stop8h 17m
American Airlines
Fri 4/1710:47 am
HRL
-
IAD
2 stops12h 12m
American Airlines
Deal found 3/8$358
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 5/15:59 pm
IAD
-
HRL
1 stop5h 52m
American Airlines
Sun 5/32:47 pm
HRL
-
IAD
1 stop7h 39m
American Airlines
Deal found 3/9$414
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sun 5/312:53 pm
IAD
-
HRL
1 stop8h 01m
United Airlines
Wed 6/35:20 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 3/8$426

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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$276
(United 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

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 March 12, 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

Wed 5/6

12:50 pm-8:00 pm

1 stop8h 10m

Harlingen Valley Intl

Sat 5/9

5:18 pm-11:59 pm

1 stop5h 41m

$291

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Mon 4/13

6:00 am-3:08 pm

1 stop10h 08m

Harlingen Valley Intl

Fri 4/17

4:02 pm-11:32 pm

1 stop6h 30m

$344
Quickest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 4/14

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Wed 4/15

5:18 pm-11:59 pm

1 stop5h 41m

$351

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Wed 4/8

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Thu 4/9

5:18 pm-11:59 pm

1 stop5h 41m

$454

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sun 4/5

6:00 am-11:23 am

1 stop6h 23m

Harlingen Valley Intl

Tue 4/7

12:05 pm-7:27 am

2 stops18h 22m

$508

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 6/25

2:53 pm-7:49 pm

1 stop5h 56m

Harlingen Valley Intl

Sun 6/28

2:05 pm-10:43 pm

1 stop7h 38m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Sorted by cheapest first

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 March.
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, Texas 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, Texas 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, 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 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, 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.

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 $291, United Airlines can have you in Harlingen, Texas from Washington, D.C. Dulles Intl Airport in 8h 10m. 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.

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