Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Harlingen, Texas to Washington, D.C. from $256

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen, Texas to Washington, D.C. departing on 2/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Harlingen, Texas to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:02 am - 5:16 pm
HRL
-
IAD
10h 14m2 stops
American Airlines Logo
5:32 pm - 10:52 pm
IAD
-
HRL
6h 20m1 stop
$256American Airlines
Tue, Feb 10 - Wed, Feb 18
American Airlines Logo
6:02 am - 5:16 pm
HRL
-
IAD
10h 14m2 stops
American Airlines Logo
11:22 am - 10:52 pm
IAD
-
HRL
12h 30m2 stops
$261American Airlines
Tue, Feb 10 - Wed, Feb 18
United Airlines Logo
12:10 pm - 8:43 pm
HRL
-
IAD
7h 33m1 stop
United Airlines Logo
12:50 pm - 7:58 pm
IAD
-
HRL
8h 08m1 stop
$331United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
12:10 pm - 8:43 pm
HRL
-
IAD
7h 33m1 stop
United Airlines Logo
12:50 pm - 7:58 pm
IAD
-
HRL
8h 08m1 stop
$370United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
12:10 pm - 8:43 pm
HRL
-
IAD
7h 33m1 stop
United Airlines Logo
8:25 am - 9:59 pm
IAD
-
HRL
14h 34m2 stops
$417United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
12:10 pm - 8:43 pm
HRL
-
IAD
7h 33m1 stop
United Airlines Logo
8:20 am - 9:59 pm
IAD
-
HRL
14h 39m2 stops
$424United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
5:18 pm - 11:59 pm
HRL
-
IAD
5h 41m1 stop
United Airlines Logo
8:25 am - 3:34 pm
IAD
-
HRL
8h 09m1 stop
$489United Airlines
Thu, May 14 - Thu, May 21
American Airlines Logo
3:22 pm - 4:31 pm
HRL
-
IAD
24h 09m1 stop
American Airlines Logo
6:00 am - 10:52 pm
IAD
-
HRL
17h 52m1 stop
$501American Airlines
Tue, Feb 10 - Wed, Feb 18
United Airlines Logo
5:00 am - 11:28 am
HRL
-
IAD
5h 28m1 stop
United Airlines Logo
6:08 am - 1:26 pm
IAD
-
HRL
8h 18m1 stop
$514United Airlines
Wed, Dec 31 - Sun, Jan 4
United Airlines Logo
9:20 am - 11:41 am
HRL
-
IAD
25h 21m2 stops
United Airlines Logo
8:25 am - 9:59 pm
IAD
-
HRL
14h 34m2 stops
$518United Airlines
Sat, Feb 14 - Wed, Feb 18

American Airlines flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Harlingen, Texas to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Feb 10
HRL6:02 amHarlingen Valley Intl
10h 14m
2 stops
IAD5:16 pmWashington, D.C. Dulles Intl
Feb 18
IAD5:32 pmWashington, D.C. Dulles Intl
6h 20m
1 stop
HRL10:52 pmHarlingen Valley Intl
$256
Find similar
American Airlines
Jan 31
HRL11:06 amHarlingen Valley Intl
11h 36m
2 stops
IAD11:42 pmWashington, D.C. Dulles Intl
Feb 3
IAD5:26 pmWashington, D.C. Dulles Intl
6h 55m
1 stop
HRL11:21 pmHarlingen Valley Intl
$259
Find similar
American Airlines
Feb 10
HRL6:02 amHarlingen Valley Intl
10h 14m
2 stops
IAD5:16 pmWashington, D.C. Dulles Intl
Feb 18
IAD11:22 amWashington, D.C. Dulles Intl
12h 30m
2 stops
HRL10:52 pmHarlingen Valley Intl
$261
Find similar

United Airlines flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Harlingen, Texas to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Feb 14
HRL12:10 pmHarlingen Valley Intl
7h 33m
1 stop
IAD8:43 pmWashington, D.C. Dulles Intl
Feb 18
IAD12:50 pmWashington, D.C. Dulles Intl
8h 08m
1 stop
HRL7:58 pmHarlingen Valley Intl
$331
Find similar
United Airlines
Feb 14
HRL12:10 pmHarlingen Valley Intl
7h 33m
1 stop
IAD8:43 pmWashington, D.C. Dulles Intl
Feb 18
IAD12:50 pmWashington, D.C. Dulles Intl
8h 08m
1 stop
HRL7:58 pmHarlingen Valley Intl
$370
Find similar
United Airlines
Feb 14
HRL12:10 pmHarlingen Valley Intl
7h 33m
1 stop
IAD8:43 pmWashington, D.C. Dulles Intl
Feb 18
IAD8:25 amWashington, D.C. Dulles Intl
14h 34m
2 stops
HRL9:59 pmHarlingen Valley Intl
$417
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Harlingen, Texas 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

Tue 2/10

6:02 am-5:16 pm

2 stops10h 14m

Washington, D.C. Dulles Intl

Wed 2/18

5:32 pm-10:52 pm

1 stop6h 20m

$256

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 2/10

6:02 am-5:16 pm

2 stops10h 14m

Washington, D.C. Dulles Intl

Wed 2/18

11:22 am-10:52 pm

2 stops12h 30m

$261

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 2/14

12:10 pm-8:43 pm

1 stop7h 33m

Washington, D.C. Dulles Intl

Wed 2/18

12:50 pm-7:58 pm

1 stop8h 08m

$331

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 2/14

12:10 pm-8:43 pm

1 stop7h 33m

Washington, D.C. Dulles Intl

Wed 2/18

12:50 pm-7:58 pm

1 stop8h 08m

$370

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 2/14

12:10 pm-8:43 pm

1 stop7h 33m

Washington, D.C. Dulles Intl

Wed 2/18

8:25 am-9:59 pm

2 stops14h 34m

$417

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 2/14

12:10 pm-8:43 pm

1 stop7h 33m

Washington, D.C. Dulles Intl

Wed 2/18

8:20 am-9:59 pm

2 stops14h 39m

$424

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 5/14

5:18 pm-11:59 pm

1 stop5h 41m

Washington, D.C. Dulles Intl

Thu 5/21

8:25 am-3:34 pm

1 stop8h 09m

$489

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 2/10

3:22 pm-4:31 pm

1 stop24h 09m

Washington, D.C. Dulles Intl

Wed 2/18

6:00 am-10:52 pm

1 stop17h 52m

$501

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Wed 12/31

5:00 am-11:28 am

1 stop5h 28m

Washington, D.C. Dulles Intl

Sun 1/4

6:08 am-1:26 pm

1 stop8h 18m

$514

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 2/14

9:20 am-11:41 am

2 stops25h 21m

Washington, D.C. Dulles Intl

Wed 2/18

8:25 am-9:59 pm

2 stops14h 34m

$518

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Harlingen, Texas to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $451. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Harlingen, Texas to Washington, D.C. Dulles Intl Airport for around $501.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Harlingen, Texas in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $533 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $540 on average. Flights to Washington, D.C. Dulles Intl Airport from Harlingen, Texas in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Harlingen, Texas to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Harlingen, Texas to Washington, D.C. Dulles Intl Airport (HRL to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen, Texas to Washington, D.C. Dulles Intl Airport

Fastest flight time

5h 28m

Direct flights

None
The fastest flight from Harlingen, Texas to Washington, D.C. Dulles Intl Airport takes 5h 28m
There are no direct flights from Harlingen, Texas to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Harlingen, Texas to Washington, D.C. Dulles Intl Airport.
Search flight deals

  • How far is Harlingen Valley Intl to Washington, D.C. Dulles Intl by plane?

    The distance between Harlingen Valley Intl and Washington, D.C. Dulles Intl is about 1465.2 mi. Flights usually cover this in 5h 28m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Harlingen Valley Intl Airport to Washington, D.C. Dulles Intl Airport refresh daily.

  • How many operators does momondo search for flights from Harlingen Valley Intl Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Harlingen Valley Intl Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Harlingen Valley Intl Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Harlingen, Texas to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Harlingen, Texas to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Harlingen, Texas to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $383Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Harpers Ferry
Rockville
Gaithersburg
Reston
Manassas
Sterling
Fairfax

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to Washington, D.C.?

It is quick and easy to find Harlingen to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

Can I find flights from Harlingen to Washington, D.C. with flexible booking policies on momondo?

All flight searches from Harlingen to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Harlingen to Washington, D.C.?

Once you have performed a search for Harlingen to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Harlingen to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Harlingen to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/17
Sat 1/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.