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Dulles Intl

$324+ Cheap flights from Harlingen, TX (HRL) to Dulles Intl (IAD)

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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — IAD
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
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 2, 2026.

This American Airlines deal was found by Cheapflights users on 2/2. 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 2/192:45 pm
HRL
-
IAD
1 stop7h 08m
American Airlines
Sun 2/226:00 am
IAD
-
HRL
1 stop9h 14m
American Airlines
Deal found 2/2$324
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/262:45 pm
HRL
-
IAD
1 stop7h 08m
American Airlines
Sun 3/16:00 am
IAD
-
HRL
1 stop9h 14m
American Airlines
Deal found 2/2$353
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/912:10 pm
HRL
-
IAD
1 stop7h 39m
United Airlines
Tue 2/108:15 am
IAD
-
HRL
1 stop8h 51m
United Airlines
Deal found 1/31$409
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Tue 2/106:02 am
HRL
-
IAD
2 stops10h 14m
American Airlines
Wed 2/185:37 pm
IAD
-
HRL
1 stop6h 26m
American Airlines
Deal found 1/31$430
This United Airlines deal was found by Cheapflights users on 1/30. 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 10/3110:10 pm
IAD
-
HRL
2 stops14h 49m
United Airlines
Deal found 1/30$448

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 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$324
(American Airlines)
Provider with most accurate pricing for Harlingen Valley Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Harlingen Valley Intl-Washington, D.C. Dulles Intl flights.
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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 2, 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 2/19

2:45 pm-10:53 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

Sun 2/22

6:00 am-2:14 pm

1 stop9h 14m

$324

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 2/26

2:45 pm-10:53 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

Sun 3/1

6:00 am-2:14 pm

1 stop9h 14m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

  • 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 2, 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
9,229 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

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
9,229 reviews
United Airlines
7.4
Good
9,229 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

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?

    American Airlines can get you from Harlingen, Texas to Washington, D.C. Dulles Intl Airport in just under 7h 08m. Your travel time can differ by up to . Harlingen, Texas and Washington, D.C. Dulles Intl Airport are separated by a distance of 1462 mi.

  • 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
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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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 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$383Average$417FlexibilityNo cancel feeOn-time69%

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