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Cheap flights from Harlingen, Texas to District of Columbia from $190

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, Texas to District of Columbia departing on 1/11. 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

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Find the cheapest flights from Harlingen, Texas to District of Columbia

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
9:20 am - 3:55 pm
HRL
-
DCA
5h 35m1 stop
United Airlines Logo
12:47 pm - 7:58 pm
DCA
-
HRL
8h 11m1 stop
$331United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
12:10 pm - 7:30 am
HRL
-
IAD
18h 20m2 stops
United Airlines Logo
8:15 am - 4:06 pm
IAD
-
HRL
8h 51m1 stop
$415United Airlines
Sat, Jan 10 - Tue, Jan 13
United Airlines Logo
12:10 pm - 7:30 am
HRL
-
IAD
18h 20m2 stops
United Airlines Logo
6:03 am - 11:26 am
IAD
-
HRL
6h 23m1 stop
$420United Airlines
Sat, Jan 10 - Tue, Jan 13
United Airlines Logo
5:20 pm - 11:49 pm
HRL
-
IAD
5h 29m1 stop
United Airlines Logo
6:08 am - 11:13 am
IAD
-
HRL
6h 05m1 stop
$429United Airlines
Tue, Dec 23 - Tue, Dec 30
United Airlines Logo
7:00 am - 8:59 pm
HRL
-
DCA
12h 59m2 stops
United Airlines Logo
8:10 am - 4:04 pm
DCA
-
HRL
8h 54m1 stop
$450United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
12:10 pm - 8:49 pm
HRL
-
IAD
7h 39m1 stop
United Airlines Logo
6:03 am - 11:26 am
IAD
-
HRL
6h 23m1 stop
$451United Airlines
Sat, Jan 10 - Tue, Jan 13
Delta Logo
3:36 pm - 11:55 pm
HRL
-
IAD
7h 19m1 stop
Delta Logo
7:00 am - 2:39 pm
IAD
-
HRL
8h 39m1 stop
$479Delta
Fri, Feb 27 - Sat, Feb 28
American Airlines Logo
6:44 pm - 4:31 pm
HRL
-
IAD
20h 47m1 stop
American Airlines Logo
6:00 am - 10:52 pm
IAD
-
HRL
17h 52m1 stop
$501American Airlines
Tue, Feb 10 - Wed, Feb 18

American Airlines flights from Harlingen, Texas to District of Columbia

Our best American Airlines deals on Harlingen, Texas to District of Columbia 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
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
American Airlines
Feb 19
HRL6:00 amHarlingen Valley Intl
7h 40m
2 stops
DCA2:40 pmWashington, D.C. Reagan-National
Feb 23
DCA6:30 amWashington, D.C. Reagan-National
8h 42m
1 stop
HRL2:12 pmHarlingen Valley Intl
$279
Find similar

United Airlines flights from Harlingen, Texas to District of Columbia

Our best United Airlines deals on Harlingen, Texas to District of Columbia flight tickets
United Airlines
Feb 14
HRL12:10 pmHarlingen Valley Intl
7h 46m
1 stop
DCA8:56 pmWashington, D.C. Reagan-National
Feb 18
DCA4:28 pmWashington, D.C. Reagan-National
6h 31m
1 stop
HRL9:59 pmHarlingen Valley Intl
$331
Find similar
United Airlines
Jan 10
HRL9:20 amHarlingen Valley Intl
5h 54m
1 stop
IAD4:14 pmWashington, D.C. Dulles Intl
Jan 13
IAD8:15 amWashington, D.C. Dulles Intl
8h 51m
1 stop
HRL4:06 pmHarlingen Valley Intl
$411
Find similar
United Airlines
Jan 10
HRL12:10 pmHarlingen Valley Intl
18h 20m
2 stops
IAD7:30 amWashington, D.C. Dulles Intl
Jan 13
IAD8:15 amWashington, D.C. Dulles Intl
8h 51m
1 stop
HRL4:06 pmHarlingen Valley Intl
$415
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen, Texas to District of Columbia 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 13, 2025.
Use the filters below to find and compare flights from Harlingen, Texas to District of Columbia 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 - DCA

HRLDCA

Harlingen Valley Intl

Sat 2/14

9:20 am-3:55 pm

1 stop5h 35m

Washington, D.C. Reagan-National

Wed 2/18

12:47 pm-7:58 pm

1 stop8h 11m

$331

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 1/10

12:10 pm-7:30 am

2 stops18h 20m

Washington, D.C. Dulles Intl

Tue 1/13

8:15 am-4:06 pm

1 stop8h 51m

$415

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 1/10

12:10 pm-7:30 am

2 stops18h 20m

Washington, D.C. Dulles Intl

Tue 1/13

6:03 am-11:26 am

1 stop6h 23m

$420

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 12/23

5:20 pm-11:49 pm

1 stop5h 29m

Washington, D.C. Dulles Intl

Tue 12/30

6:08 am-11:13 am

1 stop6h 05m

$429

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 2/14

7:00 am-8:59 pm

2 stops12h 59m

Washington, D.C. Reagan-National

Wed 2/18

8:10 am-4:04 pm

1 stop8h 54m

$450

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 1/10

12:10 pm-8:49 pm

1 stop7h 39m

Washington, D.C. Dulles Intl

Tue 1/13

6:03 am-11:26 am

1 stop6h 23m

$451

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Fri 2/27

3:36 pm-11:55 pm

1 stop7h 19m

Washington, D.C. Dulles Intl

Sat 2/28

7:00 am-2:39 pm

1 stop8h 39m

$479

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 2/10

6:44 pm-4:31 pm

1 stop20h 47m

Washington, D.C. Dulles Intl

Wed 2/18

6:00 am-10:52 pm

1 stop17h 52m

$501

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to District of Columbia from

How to get the cheapest flight ticket from Harlingen, Texas to District of Columbia

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 District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Wednesday when prices can be found for as low as $353. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Harlingen, Texas because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $417.

What is the cheapest time of day to depart on your flight to District of Columbia?

Flying to District of Columbia from Harlingen, Texas in the morning is the least expensive time of day to depart. momondo users have found prices as low as $381 when looking at flights departing in the morning. Flights to District of Columbia are more costly in the afternoon, with an average ticket price of $407. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Harlingen, Texas to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen, Texas to District of Columbia

Fastest flight time

5h 54m

Direct flights

None
The fastest flight from Harlingen, Texas to District of Columbia takes 5h 54m
There are no direct flights from Harlingen, Texas to District of Columbia. There are no popular flight routes from Harlingen, Texas to District of Columbia.
Search flight deals

  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to District of Columbia?

    Prices for flights from Harlingen Valley Intl Airport to District of Columbia refresh daily.

  • How many operators does momondo search for flights from Harlingen Valley Intl Airport to District of Columbia?

  • How old do you have to be to fly from Harlingen Valley Intl Airport to District of Columbia?

    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 District of Columbia.

  • What documentation or ID do you need to fly to District of Columbia?

    The necessary travel and health documents for your District of Columbia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Harlingen, Texas to District of Columbia

Compare and see reviews for airlines that fly from Harlingen, Texas to District of Columbia with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $155Free CancellationRating
7.9
4,253 reviews
Search Southwest flights
United AirlinesPriceFrom $270Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to District of Columbia?

It is quick and easy to find Harlingen to District of Columbia 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 District of Columbia that suits you.

Can I find flights from Harlingen to District of Columbia with flexible booking policies on momondo?

Yes. All flights to District of Columbia from Harlingen on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Harlingen to District of Columbia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Harlingen to District of Columbia.

I’m not ready to book a flight from Harlingen to District of Columbia right now. Can momondo alert me if prices change?

Price alerts on flights to District of Columbia from Harlingen are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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