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Dulles Intl

$245+ Cheap flights from Harlingen, TX (HRL) to Dulles Intl (IAD)

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — IAD
Mar 20 — Mar 271
Fri 3/20
Fri 3/27
1 adult, Economy
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Cheap flight deals from Harlingen to Dulles Intl

Cheapest flights from Harlingen to Dulles Intl
Explore the most affordable flight options available from Harlingen to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 18, 2026.

This Delta deal was found by Cheapflights users on 2/17. 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.
Thu 4/304:02 pm
HRL
-
IAD
1 stop6h 30m
Delta
Mon 5/46:00 am
IAD
-
HRL
1 stop10h 05m
Delta
Deal found 2/17$289
This United Airlines deal was found by Cheapflights users on 2/14. 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.
Fri 9/45:16 pm
HRL
-
IAD
1 stop5h 35m
United Airlines
Mon 9/76:30 am
IAD
-
HRL
1 stop7h 44m
United Airlines
Deal found 2/14$333
This United Airlines deal was found by Cheapflights users on 2/16. 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 3/312:10 pm
HRL
-
IAD
1 stop7h 31m
United Airlines
Sat 3/76:00 am
IAD
-
HRL
1 stop6h 16m
United Airlines
Deal found 2/16$339
This United Airlines deal was found by Cheapflights users on 2/14. 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 10/275:16 pm
HRL
-
IAD
1 stop5h 35m
United Airlines
Sat 10/315:15 pm
IAD
-
HRL
1 stop5h 29m
United Airlines
Deal found 2/14$369
This American Airlines deal was found by Cheapflights users on 2/14. 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 2/272:45 pm
HRL
-
IAD
1 stop7h 08m
American Airlines
Tue 3/35:37 pm
IAD
-
HRL
1 stop6h 26m
American Airlines
Deal found 2/14$374
This American Airlines deal was found by Cheapflights users on 2/16. 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 2/212:45 pm
HRL
-
IAD
1 stop7h 08m
American Airlines
Sat 3/75:37 pm
IAD
-
HRL
1 stop6h 26m
American Airlines
Deal found 2/16$404
This American Airlines deal was found by Cheapflights users on 2/16. 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 2/232:45 pm
HRL
-
IAD
1 stop7h 08m
American Airlines
Wed 3/45:37 pm
IAD
-
HRL
1 stop6h 26m
American Airlines
Deal found 2/16$414
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Thu 5/72:51 pm
HRL
-
IAD
1 stop7h 35m
American Airlines
Mon 5/115:59 pm
IAD
-
HRL
1 stop5h 52m
American Airlines
Deal found 2/15$419

Find flight deals from Harlingen to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to Dulles Intl (IAD). 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 February 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(Delta)

One-way from

$245
(American Airlines)
Provider with most accurate pricing for Harlingen Valley Intl-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Harlingen Valley Intl-Washington, D.C. Dulles Intl flights.
Search Deals
From Harlingen Valley Intl to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Harlingen Valley Intl to Washington, D.C. Dulles Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Dulles Intl 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 February 18, 2026.
Use the filters below to find and compare flights from Harlingen to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Harlingen

Fly to

Dulles Intl

Route

Depart

Return

Price

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 4/30

4:02 pm-11:32 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Mon 5/4

6:00 am-3:05 pm

1 stop10h 05m

$289

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 3/3

12:10 pm-8:41 pm

1 stop7h 31m

Washington, D.C. Dulles Intl

Sat 3/7

6:00 am-11:16 am

1 stop6h 16m

$339

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 2/27

2:45 pm-10:53 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

Tue 3/3

5:37 pm-11:03 pm

1 stop6h 26m

$374

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 5/7

2:51 pm-11:26 pm

1 stop7h 35m

Washington, D.C. Dulles Intl

Mon 5/11

5:59 pm-10:51 pm

1 stop5h 52m

$419

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 6/6

2:05 pm-10:43 pm

1 stop7h 38m

Washington, D.C. Dulles Intl

Fri 6/12

2:53 pm-7:49 pm

1 stop5h 56m

$454

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 3/3

6:46 pm-11:00 am

2 stops15h 14m

Washington, D.C. Dulles Intl

Sat 3/7

5:00 am-11:03 pm

2 stops19h 03m

$507

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sun 6/7

2:05 pm-10:43 pm

1 stop7h 38m

Washington, D.C. Dulles Intl

Fri 6/12

2:53 pm-7:49 pm

1 stop5h 56m

$552

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Mon 2/23

2:45 pm-10:53 pm

1 stop7h 08m

$245

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Mon 2/23

12:10 pm-9:20 pm

2 stops8h 10m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/16

  • Most accurate provider: When it comes to deals on Harlingen, Texas-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harlingen, Texas-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harlingen, Texas-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Harlingen, Texas-Washington, D.C. Dulles Intl Airport 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 Harlingen, Texas-Washington, D.C. Dulles Intl Airport 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 Harlingen to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Harlingen 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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated February 18, 2026.
Peruse reviews from past customers who have flown with United Airlines from Harlingen to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,314 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,314 reviews
United Airlines
7.4
Good
9,314 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Harlingen to Dulles Intl. 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 from for flights from Harlingen to Washington, D.C. Dulles Intl?

    Harlingen Valley Intl (HRL), located 3.7 mi from the city center, is the airport you fly out of when you book flights from Harlingen to Washington, D.C. Dulles Intl. 1 airline have flights from Valley Intl to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Harlingen Valley Intl to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

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

    Delta, United Airlines, and American Airlines can get you from Harlingen, Texas to Washington, D.C. Dulles Intl Airport in just under 6h 30m. Your travel time can differ by up to 1h 01m. Harlingen, Texas and Washington, D.C. Dulles Intl Airport are separated by a distance of 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 Harlingen to Dulles Intl that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Harlingen to Dulles Intl 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Manassas
Bowie
Largo
McLean
Clinton
Towson

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Harlingen to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Harlingen to Dulles Intl

Discover the top airline that operate flights from Harlingen to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$383Average$417FlexibilityNo cancel feeOn-time69%

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