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Cheap flights from Harlingen, Texas to Washington, D.C. from $339

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 11/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Harlingen, Texas to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
3:39 pm - 11:52 pmHRL-IAD
7h 13m1 stop
Delta Logo
6:03 am - 2:43 pmIAD-HRL
9h 40m1 stop
$339Delta
Find Deal
Fri, Nov 14 - Thu, Nov 20
Delta Logo
3:39 pm - 11:52 pmHRL-IAD
7h 13m1 stop
Delta Logo
6:00 am - 2:43 pmIAD-HRL
9h 43m2 stops
$344Delta
Find Deal
Fri, Nov 14 - Sat, Nov 15
Delta Logo
3:39 pm - 11:52 pmHRL-IAD
7h 13m1 stop
Delta Logo
6:03 am - 2:43 pmIAD-HRL
9h 40m1 stop
$374Delta
Find Deal
Thu, Nov 13 - Thu, Nov 20
American Airlines Logo
10:04 am - 4:09 pmHRL-IAD
5h 05m1 stop
American Airlines Logo
6:40 am - 11:35 amIAD-HRL
5h 55m1 stop
$397American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
4:02 pm - 10:28 pmHRL-IAD
5h 26m1 stop
American Airlines Logo
7:55 am - 3:32 pmIAD-HRL
8h 37m2 stops
$444American Airlines
Find Deal
Sat, Nov 15 - Wed, Nov 19
American Airlines Logo
4:02 pm - 10:33 pmHRL-IAD
5h 31m1 stop
American Airlines Logo
5:27 pm - 11:14 pmIAD-HRL
6h 47m1 stop
$449American Airlines
Find Deal
Fri, Nov 14 - Mon, Nov 17
United Airlines Logo
5:00 am - 11:28 amHRL-IAD
5h 28m1 stop
United Airlines Logo
6:00 am - 10:59 amIAD-HRL
5h 59m1 stop
$484United Airlines
Find Deal
Wed, Nov 12 - Fri, Nov 21
United Airlines Logo
11:55 am - 9:05 pmHRL-IAD
8h 10m1 stop
United Airlines Logo
1:20 pm - 10:59 amIAD-HRL
22h 39m2 stops
$488United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
11:55 am - 7:29 amHRL-IAD
18h 34m2 stops
United Airlines Logo
1:00 pm - 7:29 pmIAD-HRL
7h 29m1 stop
$508United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
5:00 am - 11:29 amHRL-IAD
5h 29m1 stop
United Airlines Logo
8:30 am - 3:59 pmIAD-HRL
8h 29m1 stop
$519United Airlines
Find Deal
Sun, Nov 16 - Wed, Nov 19

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

Our best Delta deals on Harlingen, Texas to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Nov 14
HRL3:39 pmHarlingen Valley Intl
7h 13m
1 stop
IAD11:52 pmWashington, D.C. Dulles Intl
Nov 20
IAD6:03 amWashington, D.C. Dulles Intl
9h 40m
1 stop
HRL2:43 pmHarlingen Valley Intl
$339
Find similar
Delta
Nov 14
HRL3:39 pmHarlingen Valley Intl
7h 13m
1 stop
IAD11:52 pmWashington, D.C. Dulles Intl
Nov 15
IAD6:00 amWashington, D.C. Dulles Intl
9h 43m
2 stops
HRL2:43 pmHarlingen Valley Intl
$344
Find similar
Delta
Nov 13
HRL3:39 pmHarlingen Valley Intl
7h 13m
1 stop
IAD11:52 pmWashington, D.C. Dulles Intl
Nov 20
IAD6:03 amWashington, D.C. Dulles Intl
9h 40m
1 stop
HRL2:43 pmHarlingen Valley Intl
$374
Find similar

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
Mar 10
HRL10:04 amHarlingen Valley Intl
5h 05m
1 stop
IAD4:09 pmWashington, D.C. Dulles Intl
Mar 11
IAD6:40 amWashington, D.C. Dulles Intl
5h 55m
1 stop
HRL11:35 amHarlingen Valley Intl
$397
Find similar
American Airlines
Nov 15
HRL4:02 pmHarlingen Valley Intl
5h 26m
1 stop
IAD10:28 pmWashington, D.C. Dulles Intl
Nov 19
IAD7:55 amWashington, D.C. Dulles Intl
8h 37m
2 stops
HRL3:32 pmHarlingen Valley Intl
$444
Find similar
American Airlines
Nov 14
HRL4:02 pmHarlingen Valley Intl
5h 31m
1 stop
IAD10:33 pmWashington, D.C. Dulles Intl
Nov 17
IAD5:27 pmWashington, D.C. Dulles Intl
6h 47m
1 stop
HRL11:14 pmHarlingen Valley Intl
$449
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 November 2, 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

Fri 11/14

3:39 pm-11:52 pm

1 stop7h 13m

Washington, D.C. Dulles Intl

Thu 11/20

6:03 am-2:43 pm

1 stop9h 40m

$339

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 11/14

3:39 pm-11:52 pm

1 stop7h 13m

Washington, D.C. Dulles Intl

Sat 11/15

6:00 am-2:43 pm

2 stops9h 43m

$344

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 11/13

3:39 pm-11:52 pm

1 stop7h 13m

Washington, D.C. Dulles Intl

Thu 11/20

6:03 am-2:43 pm

1 stop9h 40m

$374

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

$397

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 11/15

4:02 pm-10:28 pm

1 stop5h 26m

Washington, D.C. Dulles Intl

Wed 11/19

7:55 am-3:32 pm

2 stops8h 37m

$444

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 11/14

4:02 pm-10:33 pm

1 stop5h 31m

Washington, D.C. Dulles Intl

Mon 11/17

5:27 pm-11:14 pm

1 stop6h 47m

$449

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Wed 11/12

5:00 am-11:28 am

1 stop5h 28m

Washington, D.C. Dulles Intl

Fri 11/21

6:00 am-10:59 am

1 stop5h 59m

$484

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

$488

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 3/10

11:55 am-7:29 am

2 stops18h 34m

Washington, D.C. Dulles Intl

Wed 3/11

1:00 pm-7:29 pm

1 stop7h 29m

$508

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sun 11/16

5:00 am-11:29 am

1 stop5h 29m

Washington, D.C. Dulles Intl

Wed 11/19

8:30 am-3:59 pm

1 stop8h 29m

$519

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Direct flights

None
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.
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  • 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 05m, 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
8,997 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
Harpers Ferry
Towson
Rockville
Manassas
Reston
Gaithersburg
Fairfax
Sterling

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.

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