$116 Cheap Flights from Harlingen (HRL) to Washington (IAD)

View $116 flight on Fri, Jan 30, 2026Opens in a new window

Popular airlines from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Harlingen to Washington (HRL-IAD)

Prices were available within the past 7 days and start at $116 for one-way flights and $199 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Jan 31 - Tue, Feb 3
HRL
Harlingen
IAD
Washington
$199 Roundtrip, found 3 hours ago
$199
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Jan 31 from Harlingen to Washington, returning Tue, Feb 3, priced at $199 found 3 hours ago
United
Fri, Jan 30 - Mon, Feb 2
HRL
Harlingen
IAD
Washington
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jan 30 from Harlingen to Washington, returning Mon, Feb 2, priced at $224 found 1 day ago
American Airlines
Sat, Jan 31 - Tue, Feb 3
HRL
Harlingen
IAD
Washington
$239 Roundtrip, found 3 hours ago
$239
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Jan 31 from Harlingen to Washington, returning Tue, Feb 3, priced at $239 found 3 hours ago
Southwest Airlines
Sat, Jan 10 - Sun, Jan 11
HRL
Harlingen
IAD
Washington
$255 Roundtrip, found 3 days ago
$255
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Jan 10 from Harlingen to Washington, returning Sun, Jan 11, priced at $255 found 3 days ago
United
Fri, Jan 30 - Mon, Feb 2
HRL
Harlingen
IAD
Washington
$256 Roundtrip, found 1 day ago
$256
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jan 30 from Harlingen to Washington, returning Mon, Feb 2, priced at $256 found 1 day ago
Southwest Airlines
Sat, Jan 10 - Sun, Jan 11
HRL
Harlingen
IAD
Washington
$260 Roundtrip, found 3 days ago
$260
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Jan 10 from Harlingen to Washington, returning Sun, Jan 11, priced at $260 found 3 days ago
American Airlines
Sat, Jan 31 - Tue, Feb 3
HRL
Harlingen
IAD
Washington
$275 Roundtrip, found 3 hours ago
$275
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Jan 31 from Harlingen to Washington, returning Tue, Feb 3, priced at $275 found 3 hours ago
United
Sat, Jan 31 - Tue, Feb 3
HRL
Harlingen
IAD
Washington
$276 Roundtrip, found 3 hours ago
$276
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 31 from Harlingen to Washington, returning Tue, Feb 3, priced at $276 found 3 hours ago
Southwest Airlines
Sat, Jan 10 - Sun, Jan 11
HRL
Harlingen
IAD
Washington
$290 Roundtrip, found 3 days ago
$290
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Jan 10 from Harlingen to Washington, returning Sun, Jan 11, priced at $290 found 3 days ago
Delta
Thu, Jan 15 - Sat, Jan 31
HRL
Harlingen
IAD
Washington
$295 Roundtrip, found 4 days ago
$295
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Jan 15 from Harlingen to Washington, returning Sat, Jan 31, priced at $295 found 4 days ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $459
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $459
Flights from Harlingen (HRL) to Washington (IAD)
Origin airport
Valley Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$199
Distance
1463 mi

Harlingen to Washington Flights

The cheapest times to fly from Harlingen to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Harlingen to Washington are during the month of January. You can find some of the cheapest flights from Harlingen to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Harlingen to Washington

Sunday is one of the best days to book for cheap flights from Harlingen to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Harlingen to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Harlingen to Washington in 2026. You can also book with separate airlines for your outbound and return journeys, from $116 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Harlingen to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Harlingen to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD) cost?
Lock in a cheap one-way flight from $116 or cheap return flight from $199 from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD)?
Flying in January can help you save, as it's the cheapest month for flights between HRL and IAD. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest HRL to IAD flight.
How many flights per day from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD)?
There aren't any daily nonstop flights from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from HRL to IAD?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD)?
To land at Washington Dulles Intl. Airport (IAD) on time, choose a flight that takes off from Valley Intl. Airport (HRL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD) last-minute?
Waiting until right before your break to book a ticket from HRL to IAD often results in higher prices. While you may find some last-minute offers, there's no guarantee. Allow some flexibility in your schedule for the best chance of snagging a bargain.
Is it cheaper to book a HRL to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a HRL to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place takes the hassle out of planning your trip. Just pick your flights and select from our wide range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Valley Intl. Airport (HRL) to Washington Dulles Intl. Airport (IAD)?
You can usually reschedule or cancel your HRL to IAD flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.