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 5h 44m. 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.

In terms of precipitation, rainfall in Harlingen ranges from 1.1 - 5.2 inches per month. September is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Harlingen when rainfall is around 1.1 in.

If weather is an important factor for your trip to Harlingen, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 60.8 F).

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

When flying from Washington, D.C. Dulles Intl Airport to Harlingen, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

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.

$170+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Harlingen

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Cheap flight deals from Dulles Intl to Harlingen

Cheapest

Best

Last-minute

One-way

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 September 10, 2026.

Wed 12/28:30 am -

1 stop6h 00m

Wed 12/912:00 pm -

1 stop5h 23m

Deal found 9/9

$339

Fri 10/3012:50 pm -

1 stop7h 57m

Sat 10/311:59 pm -

1 stop5h 50m

Deal found 9/8

$349

Fri 10/302:38 pm -

1 stop6h 09m

Sun 11/15:05 am -

1 stop5h 23m

Deal found 9/8

$359

Tue 12/16:30 am -

1 stop5h 44m

Tue 12/82:05 pm -

1 stop6h 07m

Deal found 9/9

$365

Fri 10/306:05 am -

2 stops8h 18m

Sun 11/12:13 pm -

1 stop8h 13m

Deal found 9/6

$399

Fri 9/253:02 pm -

1 stop5h 42m

Sun 9/275:18 pm -

1 stop6h 12m

Deal found 9/7

$429

Fri 11/1312:50 pm -

1 stop7h 57m

Sun 11/155:05 am -

1 stop5h 23m

Deal found 9/7

$438

Sat 10/103:02 pm -

1 stop7h 50m

Sun 10/115:18 pm -

1 stop6h 12m

Deal found 9/8

$439

Wed 10/146:15 am -

1 stop8h 08m

Sat 10/242:00 pm -

1 stop7h 32m

Deal found 9/6

$449

Wed 12/27:14 am -

1 stop7h 42m

Thu 12/106:41 pm -

2 stops17h 12m

Deal found 9/9

$457

Best flights from Dulles Intl to Harlingen
Discover carefully curated flight deals from Dulles Intl to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Tue 12/16:30 am -

1 stop5h 44m

Tue 12/82:05 pm -

1 stop6h 07m

Deal found 9/9

$365

Fri 10/306:05 am -

2 stops8h 18m

Sun 11/12:13 pm -

1 stop8h 13m

Deal found 9/6

$399

Mon 9/283:02 pm -

1 stop7h 50m

Tue 9/292:00 pm -

1 stop6h 07m

Deal found 9/9

$429

Thu 12/36:30 am -

1 stop8h 00m

Thu 12/1012:00 pm -

1 stop8h 12m

Deal found 9/10

$429

Mon 9/216:30 am -

1 stop7h 54m

Thu 9/245:05 am -

1 stop5h 23m

Deal found 9/7

$429

Wed 10/146:15 am -

1 stop8h 08m

Sat 10/242:00 pm -

1 stop7h 32m

Deal found 9/6

$449

Tue 9/228:31 am -

1 stop5h 53m

Sat 9/262:00 pm -

1 stop6h 07m

Deal found 9/7

$458

Wed 10/213:02 pm -

1 stop7h 50m

Sun 10/255:25 pm -

1 stop6h 12m

Deal found 9/7

$484

Wed 12/21:12 pm -

2 stops23h 02m

Wed 12/92:05 pm -

1 stop6h 07m

Deal found 9/9

$496

Last-minute flights from Dulles Intl to Harlingen
Discover last-minute flight deals from Dulles Intl to Harlingen. Data last updated September 10, 2026 and is based on user searches.

Mon 9/218:31 am -

1 stop8h 28m

Wed 9/235:18 pm -

1 stop6h 12m

Deal found 9/8

$464

Tue 9/228:31 am -

1 stop5h 53m

Sat 9/262:00 pm -

1 stop6h 07m

Deal found 9/7

$458

Fri 9/253:02 pm -

1 stop5h 42m

Sun 9/275:18 pm -

1 stop6h 12m

Deal found 9/7

$429

Sat 10/103:02 pm -

1 stop7h 50m

Sun 10/115:18 pm -

1 stop6h 12m

Deal found 9/8

$439

Sat 10/103:02 pm -

1 stop7h 50m

Mon 10/125:18 pm -

1 stop6h 12m

Deal found 9/8

$466

Wed 10/146:15 am -

1 stop8h 08m

Sat 10/242:00 pm -

1 stop7h 32m

Deal found 9/6

$449

Fri 10/3012:50 pm -

1 stop7h 57m

Sat 10/311:59 pm -

1 stop5h 50m

Deal found 9/8

$349

Fri 10/302:38 pm -

1 stop6h 09m

Sun 11/15:05 am -

1 stop5h 23m

Deal found 9/8

$359

Fri 10/306:05 am -

2 stops8h 18m

Sun 11/12:13 pm -

1 stop8h 13m

Deal found 9/6

$399

One-way flights from Dulles Intl to Harlingen
Search for one-way flight options from Dulles Intl to Harlingen. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Thu 10/2912:50 pm -

1 stop7h 57m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$170

Mon 9/216:30 am -

1 stop7h 54m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$215

Wed 9/168:31 am -

1 stop8h 28m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$227

Tue 9/2212:45 pm -

1 stop7h 54m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$238

Fri 9/188:31 am -

1 stop8h 28m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$295

Tue 9/226:14 am -

2 stops11h 44m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$296

Wed 12/2310:54 pm -

1 stop21h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$357

Mon 9/216:15 pm -

2 stops16h 43m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$439

Wed 9/1610:25 am -

2 stops7h 33m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$499

Find flight deals from Dulles Intl to Harlingen

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$339 (United Airlines)
One-way from	$170 (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

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 Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Wed 9/16

8:31 am-3:59 pm

1 stop8h 28m

Harlingen Valley Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$227

Quickest round-trip

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Tue 9/22

12:45 pm-7:39 pm

1 stop7h 54m

Harlingen Valley Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$238

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Fri 9/18

8:31 am-3:59 pm

1 stop8h 28m

Harlingen Valley Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$295

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Wed 12/23

10:54 pm-7:39 pm

1 stop21h 45m

Harlingen Valley Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$357

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Tue 12/1

6:30 am-11:14 am

1 stop5h 44m

Harlingen Valley Intl

Tue 12/8

2:05 pm-9:12 pm

1 stop6h 07m

$365

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Fri 10/30

6:05 am-1:23 pm

2 stops8h 18m

Harlingen Valley Intl

Sun 11/1

2:13 pm-11:26 pm

1 stop8h 13m

$399

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Mon 9/28

3:02 pm-9:52 pm

1 stop7h 50m

Harlingen Valley Intl

Tue 9/29

2:00 pm-9:07 pm

1 stop6h 07m

$429

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Thu 12/3

6:30 am-1:30 pm

1 stop8h 00m

Harlingen Valley Intl

Thu 12/10

12:00 pm-9:12 pm

1 stop8h 12m

$429

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Mon 9/21

6:30 am-1:24 pm

1 stop7h 54m

Harlingen Valley Intl

Thu 9/24

5:05 am-11:28 am

1 stop5h 23m

$429

Washington, D.C.Harlingen

IAD Washington, D.C. Dulles Intl - HRL Harlingen Valley Intl

IADHRL

Washington, D.C. Dulles Intl

Mon 9/21

6:15 pm-9:58 am

2 stops16h 43m

Harlingen Valley Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 14 resultsSorted by cheapest first

Compare providers for flights from Dulles Intl to Harlingen

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 September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	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 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.

IAD-HRL

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

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 5h 44m. 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.

See more FAQs

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$170+ Cheap flights from Dulles Intl (IAD) to Harlingen (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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Dulles Intl to Harlingen

Cheapest flights from Dulles Intl to HarlingenExplore 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 September 10, 2026.

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 September 10, 2026.

Best flights from Dulles Intl to HarlingenDiscover carefully curated flight deals from Dulles Intl to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Discover carefully curated flight deals from Dulles Intl to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Last-minute flights from Dulles Intl to HarlingenDiscover last-minute flight deals from Dulles Intl to Harlingen. Data last updated September 10, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Harlingen. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Dulles Intl to HarlingenSearch for one-way flight options from Dulles Intl to Harlingen. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Search for one-way flight options from Dulles Intl to Harlingen. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Find flight deals from Dulles Intl to Harlingen

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Cheapflights Fare Finder

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

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 September.

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.

Related info for your journey

What airport do you fly into for flights to Harlingen from Washington, D.C. Dulles Intl?

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

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

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

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

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Alternative routes for Dulles Intl to Harlingen

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Complete your trip

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Search flights from Dulles Intl to Harlingen by cabin class

Find flights from Dulles Intl to Harlingen, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Harlingen

Explore flights to Harlingen departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

Dulles Intl and Harlingen flights

Browse other Dulles Intl and Harlingen flight options. Last updated on September 10, 2026.

Other flights from Dulles Intl

Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

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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 September 10, 2026.

Best flights from Dulles Intl to Harlingen
Discover carefully curated flight deals from Dulles Intl to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Last-minute flights from Dulles Intl to Harlingen
Discover last-minute flight deals from Dulles Intl to Harlingen. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Dulles Intl to Harlingen
Search for one-way flight options from Dulles Intl to Harlingen. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.