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

American Airlines, United Airlines, and Delta can get you from Harlingen, Texas to Washington, D.C. Dulles Intl Airport in just under 7h 35m. Your travel time can differ by up to 2h 39m. 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.

What is the cheapest airline to fly from Harlingen, Texas to Washington, D.C. Dulles Intl Airport round-trip?

Cheapflights users have booked flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport round-trip from $383.

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

$126 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $146 and $149, respectively.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest time of day to fly from HRL to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport as you normally would.

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.

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.

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.

$126+ Cheap Flights from Harlingen, TX to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Harlingen to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find 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 October 16, 2025.

Mon 10/203:39 pmHRL - IAD

1 stop7h 01mDelta

Mon 10/276:18 amIAD - HRL

1 stop9h 25mDelta

Deal found 10/15

$529

Mon 11/245:00 pmHRL - IAD

1 stop5h 44mUnited Airlines

Mon 12/110:10 pmIAD - HRL

1 stop13h 54mUnited Airlines

Deal found 10/15

$617

Mon 10/205:00 amHRL - IAD

1 stop5h 27mUnited Airlines

Mon 10/278:15 amIAD - HRL

2 stops14h 39mUnited Airlines

Deal found 10/15

$629

Sat 12/275:20 pmHRL - IAD

2 stops16h 54mUnited Airlines

Sat 1/36:08 amIAD - HRL

1 stop6h 05mUnited Airlines

Deal found 10/16

$689

Sat 12/278:11 pmHRL - IAD

1 stop25h 54mAmerican Airlines

Sat 1/35:33 pmIAD - HRL

1 stop6h 15mAmerican Airlines

Deal found 10/16

$706

Best flights from Harlingen to Dulles Intl
Discover carefully curated flight deals from Harlingen to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 16, 2025.

Fri 1/306:02 amHRL - IAD

2 stops10h 14mAmerican Airlines

Thu 2/56:14 amIAD - HRL

1 stop9h 32mAmerican Airlines

Deal found 10/16

$299

Fri 1/3012:10 pmHRL - IAD

1 stop7h 39mUnited Airlines

Thu 2/56:03 amIAD - HRL

1 stop6h 23mUnited Airlines

Deal found 10/16

$323

Tue 3/103:00 pmHRL - IAD

1 stop7h 35mDelta

Wed 3/116:15 amIAD - HRL

1 stop9h 14mDelta

Deal found 10/15

$434

Tue 2/1012:10 pmHRL - IAD

1 stop7h 39mUnited Airlines

Sat 2/1412:51 pmIAD - HRL

1 stop8h 07mUnited Airlines

Deal found 10/14

$365

Tue 3/1010:04 amHRL - IAD

1 stop5h 05mAmerican Airlines

Wed 3/116:40 amIAD - HRL

1 stop5h 55mAmerican Airlines

Deal found 10/14

$444

Tue 3/1011:55 amHRL - IAD

1 stop8h 10mUnited Airlines

Wed 3/111:20 pmIAD - HRL

2 stops22h 39mUnited Airlines

Deal found 10/16

$508

Last-minute flights from Harlingen to Dulles Intl
Discover last-minute flight deals from Harlingen to Dulles Intl. Data last updated October 16, 2025 and is based on user searches.

Mon 10/203:39 pmHRL - IAD

1 stop7h 01mDelta

Mon 10/276:18 amIAD - HRL

1 stop9h 25mDelta

Deal found 10/15

$529

Mon 10/205:00 amHRL - IAD

1 stop5h 27mUnited Airlines

Mon 10/278:15 amIAD - HRL

2 stops14h 39mUnited Airlines

Deal found 10/15

$629

Mon 11/245:00 pmHRL - IAD

1 stop5h 44mUnited Airlines

Mon 12/110:10 pmIAD - HRL

1 stop13h 54mUnited Airlines

Deal found 10/15

$617

One-way flights from Harlingen to Dulles Intl
Search for one-way flight options from Harlingen to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 16, 2025.

Sat 12/64:05 pmHRL - IAD

1 stop6h 57mDelta

Deal found 10/16

$126

Sat 1/1012:10 pmHRL - IAD

1 stop7h 39mUnited Airlines

Deal found 10/16

$146

Wed 12/34:02 pmHRL - IAD

1 stop5h 57mAmerican Airlines

Deal found 10/16

$149

Sat 12/612:13 pmHRL - IAD

2 stops10h 48mAmerican Airlines

Deal found 10/16

$165

Sun 1/410:12 amHRL - IAD

1 stop5h 53mAmerican Airlines

Deal found 10/15

$309

Sun 1/45:00 amHRL - IAD

2 stops29h 45mUnited Airlines

Deal found 10/15

$439

Sat 11/295:00 pmHRL - IAD

2 stops17h 25mUnited Airlines

Deal found 10/16

$519

Sat 11/293:39 pmHRL - IAD

1 stop7h 13mDelta

Deal found 10/16

$569

Cheap flight deals from Harlingen to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$299 (American Airlines)
One-way from	$126 (Delta)

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

Search Deals

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 1/30

6:02 am-5:16 pm

2 stops10h 14m

Washington, D.C. Dulles Intl

Thu 2/5

6:14 am-2:46 pm

1 stop9h 32m

$299

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 1/30

12:10 pm-8:49 pm

1 stop7h 39m

Washington, D.C. Dulles Intl

Thu 2/5

6:03 am-11:26 am

1 stop6h 23m

$323

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 2/10

12:10 pm-8:49 pm

1 stop7h 39m

Washington, D.C. Dulles Intl

Sat 2/14

12:51 pm-7:58 pm

1 stop8h 07m

$365

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 3/10

3:00 pm-11:35 pm

1 stop7h 35m

Washington, D.C. Dulles Intl

Wed 3/11

6:15 am-2:29 pm

1 stop9h 14m

$434

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 3/10

10:04 am-4:09 pm

1 stop5h 05m

Washington, D.C. Dulles Intl

Wed 3/11

6:40 am-11:35 am

1 stop5h 55m

$444

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 3/10

11:55 am-9:05 pm

1 stop8h 10m

Washington, D.C. Dulles Intl

Wed 3/11

1:20 pm-10:59 am

2 stops22h 39m

$508

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 12/6

4:05 pm-12:02 am

1 stop6h 57m

$126

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 1/10

12:10 pm-8:49 pm

1 stop7h 39m

$146

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Wed 12/3

4:02 pm-10:59 pm

1 stop5h 57m

$149

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 12/6

12:13 pm-12:01 am

2 stops10h 48m

$165

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 15 results

Compare providers for flights from Harlingen to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Harlingen to Dulles Intl in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 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

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

8,982 reviews

Reviews

1 / 20

10.0

Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

United Airlines

7.4

Good

8,982 reviews

United Airlines

7.4

Good

8,982 reviews

Reviews

1 / 20

10.0

Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Related info for your journey

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, United Airlines, and Delta can get you from Harlingen, Texas to Washington, D.C. Dulles Intl Airport in just under 7h 35m. Your travel time can differ by up to 2h 39m. 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.
What is the cheapest airline to fly from Harlingen, Texas to Washington, D.C. Dulles Intl Airport round-trip?
Cheapflights users have booked flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport round-trip from $383.
What are the cheapest airlines to fly from Harlingen, Texas to Washington, D.C. Dulles Intl Airport one-way?
$126 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $146 and $149, respectively.
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

Alexandria

Woodbridge

Arlington

Tysons

Springfield

Silver Spring

Hanover

Gaithersburg

Fredericksburg

Fairfax

Linthicum Heights

Falls Church

Owings Mills

Manassas

Largo

Oxon Hill

Laurel

Towson

National Harbor

Waldorf

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Harlingen to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$383	Average$417	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$126+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Harlingen to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Harlingen to Dulles Intl

Cheapest flights from Harlingen to Dulles IntlExplore 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 October 16, 2025.

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 October 16, 2025.

Cheap flight deals from Harlingen to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Harlingen to Washington, D.C. Dulles Intl Airport that are best for you.

Compare providers for flights from Harlingen to Dulles Intl

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 Harlingen to Dulles Intl in October.

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.

Reviews of airlines servicing Dulles Intl

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.

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?

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

What is the cheapest airline to fly from Harlingen, Texas to Washington, D.C. Dulles Intl Airport round-trip?

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

Can I find deals for flights from Harlingen to Dulles Intl that include hotel bookings?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Harlingen to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Harlingen to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

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 October 16, 2025.