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 April 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.

$93 Cheap Flights from Harlingen to District of Columbia in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to District of Columbia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:18 pm - 11:58 pm

HRL

DCA

5h 40m

1 stop

4:59 pm - 9:54 pm

DCA

HRL

5h 55m

1 stop

$217United Airlines

Wed, May 20 - Wed, May 27

5:18 pm - 11:59 pm

HRL

IAD

5h 41m

1 stop

2:53 pm - 7:49 pm

IAD

HRL

5h 56m

1 stop

$238United Airlines

Wed, May 20 - Wed, May 27

5:20 pm - 11:59 pm

HRL

DCA

5h 39m

1 stop

12:59 pm - 7:49 pm

DCA

HRL

7h 50m

1 stop

$274United Airlines

Thu, May 21 - Thu, May 28

5:20 pm - 12:31 am

HRL

IAD

6h 11m

1 stop

2:53 pm - 7:49 pm

IAD

HRL

5h 56m

1 stop

$274United Airlines

Thu, May 21 - Thu, May 28

12:05 pm - 6:50 pm

HRL

DCA

5h 45m

1 stop

8:20 am - 3:59 pm

DCA

HRL

8h 39m

1 stop

$299United Airlines

Thu, May 7 - Thu, May 28

5:18 pm - 11:58 pm

HRL

DCA

5h 40m

1 stop

2:55 pm - 7:49 pm

DCA

HRL

5h 54m

1 stop

$301United Airlines

Mon, May 11 - Thu, May 28

2:00 pm - 8:35 pm

HRL

DCA

5h 35m

1 stop

2:50 pm - 7:29 pm

DCA

HRL

5h 39m

1 stop

$307United Airlines

Tue, Sep 1 - Wed, Sep 2

5:15 am - 11:28 am

HRL

IAD

5h 13m

1 stop

3:02 pm - 7:29 pm

IAD

HRL

5h 27m

1 stop

$307United Airlines

Tue, Sep 1 - Wed, Sep 2

5:15 am - 11:28 am

HRL

IAD

5h 13m

1 stop

3:02 pm - 7:29 pm

IAD

HRL

5h 27m

1 stop

$309United Airlines

Sat, Aug 29 - Sat, Sep 12

7:10 am - 3:00 pm

HRL

DCA

6h 50m

2 stops

6:10 am - 5:20 pm

DCA

HRL

12h 10m

1 stop

$356Southwest

Wed, May 20 - Wed, May 27

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United Airlines flights from Harlingen to District of Columbia

Our best United Airlines deals on Harlingen to District of Columbia flight tickets

United Airlines

May 20

HRL5:18 pmHarlingen Valley Intl

5h 40m

1 stop

DCA11:58 pmWashington, D.C. Reagan-National

May 27

DCA4:59 pmWashington, D.C. Reagan-National

5h 55m

1 stop

HRL9:54 pmHarlingen Valley Intl

$217

United Airlines

May 20

HRL5:18 pmHarlingen Valley Intl

5h 41m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

May 27

IAD2:53 pmWashington, D.C. Dulles Intl

5h 56m

1 stop

HRL7:49 pmHarlingen Valley Intl

$238

United Airlines

May 21

HRL5:20 pmHarlingen Valley Intl

6h 11m

1 stop

IAD12:31 amWashington, D.C. Dulles Intl

May 28

IAD2:53 pmWashington, D.C. Dulles Intl

5h 56m

1 stop

HRL7:49 pmHarlingen Valley Intl

$274

American Airlines flights from Harlingen to District of Columbia

Our best American Airlines deals on Harlingen to District of Columbia flight tickets

American Airlines

May 4

HRL2:47 pmHarlingen Valley Intl

7h 09m

1 stop

DCA10:56 pmWashington, D.C. Reagan-National

May 19

DCA6:59 amWashington, D.C. Reagan-National

8h 22m

1 stop

HRL2:21 pmHarlingen Valley Intl

$381

American Airlines

May 4

HRL2:47 pmHarlingen Valley Intl

7h 09m

1 stop

DCA10:56 pmWashington, D.C. Reagan-National

May 19

DCA6:59 amWashington, D.C. Reagan-National

8h 22m

1 stop

HRL2:21 pmHarlingen Valley Intl

$409

American Airlines

May 16

HRL2:51 pmHarlingen Valley Intl

8h 04m

2 stops

DCA11:55 pmWashington, D.C. Reagan-National

May 24

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

6h 13m

1 stop

HRL10:13 amHarlingen Valley Intl

$410

momondo Fare Finder

Use the filters below to find and compare flights from Harlingen to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Wed 5/20

5:18 pm-11:58 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Wed 5/27

4:59 pm-9:54 pm

1 stop5h 55m

$217

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Wed 5/20

5:18 pm-11:59 pm

1 stop5h 41m

Washington, D.C. Dulles Intl

Wed 5/27

2:53 pm-7:49 pm

1 stop5h 56m

$238

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Thu 5/21

5:20 pm-11:59 pm

1 stop5h 39m

Washington, D.C. Reagan-National

Thu 5/28

12:59 pm-7:49 pm

1 stop7h 50m

$274

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 5/21

5:20 pm-12:31 am

1 stop6h 11m

Washington, D.C. Dulles Intl

Thu 5/28

2:53 pm-7:49 pm

1 stop5h 56m

$274

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Thu 5/7

12:05 pm-6:50 pm

1 stop5h 45m

Washington, D.C. Reagan-National

Thu 5/28

8:20 am-3:59 pm

1 stop8h 39m

$299

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Mon 5/11

5:18 pm-11:58 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Thu 5/28

2:55 pm-7:49 pm

1 stop5h 54m

$301

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Tue 9/1

2:00 pm-8:35 pm

1 stop5h 35m

Washington, D.C. Reagan-National

Wed 9/2

2:50 pm-7:29 pm

1 stop5h 39m

$307

Quickest round-trip

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Tue 9/1

5:15 am-11:28 am

1 stop5h 13m

Washington, D.C. Dulles Intl

Wed 9/2

3:02 pm-7:29 pm

1 stop5h 27m

$307

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 8/29

5:15 am-11:28 am

1 stop5h 13m

Washington, D.C. Dulles Intl

Sat 9/12

3:02 pm-7:29 pm

1 stop5h 27m

$309

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Wed 5/20

7:10 am-3:00 pm

2 stops6h 50m

Washington, D.C. Reagan-National

Wed 5/27

6:10 am-5:20 pm

1 stop12h 10m

$356

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Harlingen 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, United Airlines, and Delta are the most popular carriers 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 according to our data. United Airlines is the first choice among our users, with 61% 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 to District of Columbia flight deals and tips

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

Fastest flight time	5h 13m
Direct flights	None

The fastest flight from Harlingen to District of Columbia takes 5h 13m

There are no direct flights from Harlingen to District of Columbia. There are no popular flight routes from Harlingen to District of Columbia.

Search flight deals

Frequently asked questions about flying from Harlingen to District of Columbia

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 April 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 to District of Columbia

Compare and see reviews for airlines that fly from Harlingen to District of Columbia with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $155	Free Cancellation	Rating 8.0 4,335 reviews		Search Southwest flights
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.4 9,646 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.