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?

The number of operators available for flights from Harlingen Valley Intl Airport to District of Columbia is 1 as of March 2026.

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.

$155 Cheap Flights from Harlingen to District of Columbia in 2026

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:05 pm - 11:15 pm

HRL

DCA

5h 10m

1 stop

6:50 pm - 12:05 am

DCA

HRL

6h 15m

1 stop

$309Southwest

Tue, Mar 31 - Thu, Apr 2

2:47 pm - 11:26 pm

HRL

IAD

7h 39m

1 stop

7:00 am - 2:17 pm

IAD

HRL

8h 17m

1 stop

$323American Airlines

Thu, Apr 30 - Sun, May 3

5:20 pm - 12:31 am

HRL

IAD

6h 11m

1 stop

2:53 pm - 9:54 pm

IAD

HRL

8h 01m

1 stop

$329United Airlines

Sat, Jun 13 - Fri, Jun 19

6:05 am - 1:15 pm

HRL

DCA

6h 10m

2 stops

6:50 pm - 12:05 am

DCA

HRL

6h 15m

1 stop

$332Southwest

Tue, Mar 31 - Thu, Apr 2

5:25 pm - 11:32 pm

HRL

DCA

5h 07m

1 stop

12:32 pm - 7:56 pm

DCA

HRL

8h 24m

1 stop

$359United Airlines

Sat, Mar 21 - Wed, Mar 25

11:15 am - 8:55 pm

HRL

DCA

8h 40m

1 stop

6:05 am - 12:05 pm

DCA

HRL

7h 00m

1 stop

$389Southwest

Sat, Jul 4 - Tue, Jul 14

11:15 am - 8:20 pm

HRL

DCA

8h 05m

2 stops

9:30 am - 4:15 pm

DCA

HRL

7h 45m

2 stops

$394Southwest

Sat, Jul 4 - Tue, Jul 14

5:18 pm - 11:59 pm

HRL

IAD

5h 41m

1 stop

12:50 pm - 8:00 pm

IAD

HRL

8h 10m

1 stop

$404United Airlines

Thu, Apr 30 - Mon, May 4

10:47 am - 11:59 pm

HRL

IAD

12h 12m

2 stops

7:00 am - 2:17 pm

IAD

HRL

8h 17m

1 stop

$405American Airlines

Thu, Apr 30 - Sun, May 3

5:10 am - 11:56 am

HRL

DCA

5h 46m

1 stop

12:59 pm - 7:49 pm

DCA

HRL

7h 50m

1 stop

$414United Airlines

Sat, Jun 6 - Mon, Jun 15

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

Jun 13

HRL5:20 pmHarlingen Valley Intl

6h 11m

1 stop

IAD12:31 amWashington, D.C. Dulles Intl

Jun 19

IAD2:53 pmWashington, D.C. Dulles Intl

8h 01m

1 stop

HRL9:54 pmHarlingen Valley Intl

$329

United Airlines

Mar 21

HRL5:25 pmHarlingen Valley Intl

5h 07m

1 stop

DCA11:32 pmWashington, D.C. Reagan-National

Mar 25

DCA12:32 pmWashington, D.C. Reagan-National

8h 24m

1 stop

HRL7:56 pmHarlingen Valley Intl

$359

United Airlines

Apr 30

HRL5:18 pmHarlingen Valley Intl

5h 41m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

May 4

IAD12:50 pmWashington, D.C. Dulles Intl

8h 10m

1 stop

HRL8:00 pmHarlingen Valley Intl

$404

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

Apr 30

HRL2:47 pmHarlingen Valley Intl

7h 39m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

May 3

IAD7:00 amWashington, D.C. Dulles Intl

8h 17m

1 stop

HRL2:17 pmHarlingen Valley Intl

$323

American Airlines

Apr 30

HRL10:47 amHarlingen Valley Intl

12h 12m

2 stops

IAD11:59 pmWashington, D.C. Dulles Intl

May 3

IAD7:00 amWashington, D.C. Dulles Intl

8h 17m

1 stop

HRL2:17 pmHarlingen Valley Intl

$405

American Airlines

Jun 6

HRL10:43 amHarlingen Valley Intl

9h 17m

2 stops

DCA9:00 pmWashington, D.C. Reagan-National

Jun 16

DCA5:00 amWashington, D.C. Reagan-National

6h 13m

1 stop

HRL10:13 amHarlingen Valley Intl

$527

momondo Fare Finder

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

Cheapest round-trip

Quickest round-trip

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 3/31

5:05 pm-11:15 pm

1 stop5h 10m

Washington, D.C. Reagan-National

Thu 4/2

6:50 pm-12:05 am

1 stop6h 15m

$309

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 4/30

2:47 pm-11:26 pm

1 stop7h 39m

Washington, D.C. Dulles Intl

Sun 5/3

7:00 am-2:17 pm

1 stop8h 17m

$323

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 6/13

5:20 pm-12:31 am

1 stop6h 11m

Washington, D.C. Dulles Intl

Fri 6/19

2:53 pm-9:54 pm

1 stop8h 01m

$329

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 3/31

6:05 am-1:15 pm

2 stops6h 10m

Washington, D.C. Reagan-National

Thu 4/2

6:50 pm-12:05 am

1 stop6h 15m

$332

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 3/21

5:25 pm-11:32 pm

1 stop5h 07m

Washington, D.C. Reagan-National

Wed 3/25

12:32 pm-7:56 pm

1 stop8h 24m

$359

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 7/4

11:15 am-8:55 pm

1 stop8h 40m

Washington, D.C. Reagan-National

Tue 7/14

6:05 am-12:05 pm

1 stop7h 00m

$389

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 7/4

11:15 am-8:20 pm

2 stops8h 05m

Washington, D.C. Reagan-National

Tue 7/14

9:30 am-4:15 pm

2 stops7h 45m

$394

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 4/30

5:18 pm-11:59 pm

1 stop5h 41m

Washington, D.C. Dulles Intl

Mon 5/4

12:50 pm-8:00 pm

1 stop8h 10m

$404

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 4/30

10:47 am-11:59 pm

2 stops12h 12m

Washington, D.C. Dulles Intl

Sun 5/3

7:00 am-2:17 pm

1 stop8h 17m

$405

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 6/6

5:10 am-11:56 am

1 stop5h 46m

Washington, D.C. Reagan-National

Mon 6/15

12:59 pm-7:49 pm

1 stop7h 50m

$414

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

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 airline that flies from Harlingen Valley Intl to District of Columbia?

Southwest is the most popular carrier operating from Harlingen Valley Intl to District of Columbia

What airlines fly to District of Columbia?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to District of Columbia from Harlingen, Texas according to our data. United Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 3 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

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 10m
Direct flights	None

The fastest flight from Harlingen, Texas to District of Columbia takes 5h 10m

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?
The number of operators available for flights from Harlingen Valley Intl Airport to District of Columbia is 1 as of March 2026.
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
Southwest	PriceFrom $155	Free Cancellation	Rating 8.0 4,314 reviews		Search Southwest flights
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.4 9,408 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.