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Cheap flights from Harlingen to Washington, D.C. from $235

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to Washington, D.C. departing on 6/26. 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
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:05 am - 11:28 am
HRL
-
IAD
5h 23m
1 stop
United Airlines Logo
6:15 am - 1:23 pm
IAD
-
HRL
8h 08m
1 stop
$329United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:18 pm - 11:55 pm
HRL
-
IAD
5h 37m
1 stop
United Airlines Logo
8:31 am - 3:59 pm
IAD
-
HRL
8h 28m
1 stop
$419United Airlines
Tue, Aug 25 - Wed, Aug 26
United Airlines Logo
5:18 pm - 11:55 pm
HRL
-
IAD
5h 37m
1 stop
United Airlines Logo
5:31 pm - 1:24 pm
IAD
-
HRL
20h 53m
2 stops
$472United Airlines
Tue, Aug 25 - Wed, Aug 26
United Airlines Logo
5:18 pm - 9:28 am
HRL
-
IAD
15h 10m
2 stops
United Airlines Logo
5:31 pm - 1:24 pm
IAD
-
HRL
20h 53m
2 stops
$555United Airlines
Tue, Aug 25 - Wed, Aug 26
United Airlines Logo
5:18 pm - 9:28 am
HRL
-
IAD
15h 10m
2 stops
United Airlines Logo
5:31 pm - 1:24 pm
IAD
-
HRL
20h 53m
2 stops
$567United Airlines
Tue, Aug 25 - Wed, Aug 26
United Airlines Logo
5:10 am - 11:28 am
HRL
-
IAD
5h 18m
1 stop
United Airlines Logo
6:30 am - 1:30 pm
IAD
-
HRL
8h 00m
1 stop
$579United Airlines
Mon, Aug 3 - Wed, Aug 5
American Airlines Logo
10:45 am - 12:10 am
HRL
-
IAD
12h 25m
2 stops
American Airlines Logo
11:59 am - 7:34 pm
IAD
-
HRL
8h 35m
1 stop
$585American Airlines
Tue, Jul 7 - Mon, Aug 3
American Airlines Logo
10:45 am - 6:37 pm
HRL
-
IAD
6h 52m
1 stop
American Airlines Logo
6:33 am - 4:23 pm
IAD
-
HRL
10h 50m
2 stops
$593American Airlines
Fri, Jul 17 - Tue, Jul 21
United Airlines Logo
5:05 am - 11:28 am
HRL
-
IAD
5h 23m
1 stop
United Airlines Logo
12:55 pm - 7:44 pm
IAD
-
HRL
7h 49m
2 stops
$612United Airlines
Thu, Sep 24 - Mon, Sep 28
American Airlines Logo
6:00 am - 12:10 am
HRL
-
IAD
17h 10m
2 stops
American Airlines Logo
8:22 pm - 10:12 am
IAD
-
HRL
14h 50m
2 stops
$621American Airlines
Fri, Jul 3 - Thu, Jul 9

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

Our best United Airlines deals on Harlingen to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Sep 24
HRL5:05 amHarlingen Valley Intl
5h 23m
1 stop
IAD11:28 amWashington, D.C. Dulles Intl
Sep 28
IAD6:15 amWashington, D.C. Dulles Intl
8h 08m
1 stop
HRL1:23 pmHarlingen Valley Intl
$329
United Airlines
Aug 25
HRL5:18 pmHarlingen Valley Intl
5h 37m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
Aug 26
IAD8:31 amWashington, D.C. Dulles Intl
8h 28m
1 stop
HRL3:59 pmHarlingen Valley Intl
$419
United Airlines
Aug 25
HRL5:18 pmHarlingen Valley Intl
5h 37m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
Aug 26
IAD5:31 pmWashington, D.C. Dulles Intl
20h 53m
2 stops
HRL1:24 pmHarlingen Valley Intl
$472

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

Our best American Airlines deals on Harlingen to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Jul 7
HRL10:45 amHarlingen Valley Intl
12h 25m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
Aug 3
IAD11:59 amWashington, D.C. Dulles Intl
8h 35m
1 stop
HRL7:34 pmHarlingen Valley Intl
$585
American Airlines
Jul 17
HRL10:45 amHarlingen Valley Intl
6h 52m
1 stop
IAD6:37 pmWashington, D.C. Dulles Intl
Jul 21
IAD6:33 amWashington, D.C. Dulles Intl
10h 50m
2 stops
HRL4:23 pmHarlingen Valley Intl
$593
American Airlines
Jul 3
HRL6:00 amHarlingen Valley Intl
17h 10m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
Jul 9
IAD8:22 pmWashington, D.C. Dulles Intl
14h 50m
2 stops
HRL10:12 amHarlingen Valley Intl
$621

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen 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 June 17, 2026.
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

Cheapest round-trip

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 9/24

5:05 am-11:28 am

1 stop5h 23m

Washington, D.C. Dulles Intl

Mon 9/28

6:15 am-1:23 pm

1 stop8h 08m

$329

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 8/25

5:18 pm-11:55 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Wed 8/26

8:31 am-3:59 pm

1 stop8h 28m

$419

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 8/25

5:18 pm-11:55 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Wed 8/26

5:31 pm-1:24 pm

2 stops20h 53m

$472

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 8/25

5:18 pm-9:28 am

2 stops15h 10m

Washington, D.C. Dulles Intl

Wed 8/26

5:31 pm-1:24 pm

2 stops20h 53m

$555

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 8/25

5:18 pm-9:28 am

2 stops15h 10m

Washington, D.C. Dulles Intl

Wed 8/26

5:31 pm-1:24 pm

2 stops20h 53m

$567

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Mon 8/3

5:10 am-11:28 am

1 stop5h 18m

Washington, D.C. Dulles Intl

Wed 8/5

6:30 am-1:30 pm

1 stop8h 00m

$579

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 7/7

10:45 am-12:10 am

2 stops12h 25m

Washington, D.C. Dulles Intl

Mon 8/3

11:59 am-7:34 pm

1 stop8h 35m

$585

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 7/17

10:45 am-6:37 pm

1 stop6h 52m

Washington, D.C. Dulles Intl

Tue 7/21

6:33 am-4:23 pm

2 stops10h 50m

$593
Quickest round-trip

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 9/24

5:05 am-11:28 am

1 stop5h 23m

Washington, D.C. Dulles Intl

Mon 9/28

12:55 pm-7:44 pm

2 stops7h 49m

$612

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 7/3

6:00 am-12:10 am

2 stops17h 10m

Washington, D.C. Dulles Intl

Thu 7/9

8:22 pm-10:12 am

2 stops14h 50m

$621

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Harlingen 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 airline that flies from Harlingen Valley Intl to Washington, D.C. Dulles Intl?

United Airlines and American Airlines are the most popular carriers operating from Harlingen Valley Intl to Washington, D.C. Dulles Intl

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

Are you open to changing your travel dates? Check out the ideal times to fly from Harlingen 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 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 to Washington, D.C. Dulles Intl Airport

Fastest flight time

5h 37m

Direct flights

None
The fastest flight from Harlingen to Washington, D.C. Dulles Intl Airport takes 5h 37m
There are no direct flights from Harlingen to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Harlingen to Washington, D.C. Dulles Intl Airport.
Search flight deals

Frequently asked questions about flying from Harlingen to Washington, D.C. Dulles Intl Airport

  • 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 37m, 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 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.

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
Waldorf
Woodbridge
Laurel
Fredericksburg
Gaithersburg
Colonial Beach
Rockville
Linthicum Heights
Silver Spring
Towson
Manassas
Sterling
Tysons
Springfield
Bethesda

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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