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Harlingen

$160+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HRL
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
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 May 10, 2026.

This United Airlines deal was found by Cheapflights users on 5/6. 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 9/213:02 pm
IAD
-
HRL
1 stop7h 42m
United Airlines
Mon 9/285:18 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 5/6$329
This United Airlines deal was found by Cheapflights users on 5/8. 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 9/293:02 pm
IAD
-
HRL
1 stop7h 50m
United Airlines
Wed 9/301:59 pm
HRL
-
IAD
1 stop7h 30m
United Airlines
Deal found 5/8$379
This United Airlines deal was found by Cheapflights users on 5/7. 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 6/412:50 pm
IAD
-
HRL
1 stop7h 59m
United Airlines
Thu 6/115:20 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 5/7$389
This United Airlines deal was found by Cheapflights users on 5/5. 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 5/66:00 am
IAD
-
HRL
1 stop6h 23m
United Airlines
Tue 5/125:18 pm
HRL
-
IAD
1 stop5h 41m
United Airlines
Deal found 5/5$401
This American Airlines deal was found by Cheapflights users on 5/5. 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 5/611:26 am
IAD
-
HRL
2 stops12h 25m
American Airlines
Tue 5/122:51 pm
HRL
-
IAD
1 stop7h 35m
American Airlines
Deal found 5/5$406
This Delta deal was found by Cheapflights users on 5/9. 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.
Mon 11/167:30 am
IAD
-
HRL
1 stop7h 01m
Delta
Fri 11/202:00 pm
HRL
-
IAD
1 stop8h 33m
Delta
Deal found 5/9$408
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Sat 5/236:20 am
IAD
-
HRL
2 stops11h 28m
American Airlines
Wed 5/2710:43 am
HRL
-
IAD
2 stops12h 30m
American Airlines
Deal found 5/8$419
This United Airlines deal was found by Cheapflights users on 5/8. 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 5/232:53 pm
IAD
-
HRL
1 stop8h 01m
United Airlines
Wed 5/275:20 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 5/8$429
This United Airlines deal was found by Cheapflights users on 5/8. 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 6/92:53 pm
IAD
-
HRL
1 stop8h 01m
United Airlines
Tue 6/305:20 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 5/8$440
This United Airlines deal was found by Cheapflights users on 5/7. 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 6/68:40 am
IAD
-
HRL
1 stop8h 19m
United Airlines
Mon 6/85:20 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 5/7$469
This United Airlines deal was found by Cheapflights users on 5/7. 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 6/68:40 am
IAD
-
HRL
1 stop8h 19m
United Airlines
Thu 6/115:20 pm
HRL
-
IAD
1 stop6h 11m
United Airlines
Deal found 5/7$479

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 May 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(United Airlines)

One-way from

$160
(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
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 May 10, 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
Quickest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Mon 9/21

3:02 pm-9:44 pm

1 stop7h 42m

Harlingen Valley Intl

Mon 9/28

5:18 pm-12:29 am

1 stop6h 11m

$329

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 10/23

7:30 am-1:31 pm

1 stop7h 01m

Harlingen Valley Intl

Sun 10/25

2:00 pm-11:33 pm

1 stop8h 33m

$379

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 9/29

3:02 pm-9:52 pm

1 stop7h 50m

Harlingen Valley Intl

Wed 9/30

1:59 pm-10:29 pm

1 stop7h 30m

$379

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 6/4

12:50 pm-7:49 pm

1 stop7h 59m

Harlingen Valley Intl

Thu 6/11

5:20 pm-12:31 am

1 stop6h 11m

$389

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 6/6

8:40 am-3:59 pm

1 stop8h 19m

Harlingen Valley Intl

Thu 6/11

5:20 pm-12:31 am

1 stop6h 11m

$479

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 8/7

2:53 pm-9:54 pm

1 stop8h 01m

Harlingen Valley Intl

Sat 8/8

5:20 pm-12:31 am

1 stop6h 11m

$496

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Mon 6/1

2:53 pm-9:54 pm

1 stop8h 01m

Harlingen Valley Intl

Mon 6/8

5:20 pm-12:31 am

1 stop6h 11m

$511

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 5/30

6:30 am-1:30 pm

1 stop8h 00m

Harlingen Valley Intl

Sat 6/6

5:20 pm-12:31 am

1 stop6h 11m

$529
Cheapest one-way

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Tue 7/14

2:53 pm-7:49 pm

1 stop5h 56m

$160

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Fri 7/17

2:53 pm-7:49 pm

1 stop5h 56m

$165

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 14 resultsSorted by cheapest first
1
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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 May.
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 01m. Fly via United Airlines or Delta 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.

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