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 55% 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.

What is the cheapest airline that flies from Harlingen Valley Intl to District of Columbia?

United Airlines, Delta, and Southwest are the most popular carriers operating from Harlingen Valley Intl 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 2 as of October 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.

$180 Cheap Flights from Harlingen to District of Columbia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to District of Columbia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:59 pm - 8:58 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 59m1 stop Houston George Bush Intcntl

10:54 am - 3:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 56m1 stop Houston George Bush Intcntl

$297United Airlines

Thu, Nov 26 - Wed, Dec 2

1:59 pm - 8:24 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

5h 25m1 stop Houston George Bush Intcntl

2:24 pm - 9:59 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

8h 35m1 stop Houston George Bush Intcntl

$297United Airlines

Thu, Nov 26 - Wed, Dec 2

1:59 pm - 8:58 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 59m1 stop Houston George Bush Intcntl

6:05 am - 11:14 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 09m1 stop Houston George Bush Intcntl

$359United Airlines

Thu, Nov 26 - Wed, Dec 2

5:05 am - 11:47 amHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 42m1 stop Houston George Bush Intcntl

4:30 pm - 9:59 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 29m1 stop Houston George Bush Intcntl

$359United Airlines

Wed, Nov 25 - Wed, Dec 2

2:18 pm - 10:00 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 42m1 stop Minneapolis St Paul

6:00 am - 1:37 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 37m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul

$364Delta

Wed, Nov 25 - Wed, Dec 2

2:47 pm - 11:57 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 10m1 stop Dallas/Fort Worth

5:00 am - 10:04 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 04m1 stop Dallas/Fort Worth

$378American Airlines

Wed, Dec 23 - Tue, Dec 29

7:10 am - 2:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 45m1 stop Austin Bergstrom

8:25 am - 3:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 25m2 stops Lambert-St Louis Houston Hobby

$383Southwest

Thu, Nov 26 - Wed, Dec 2

5:55 am - 2:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 00m2 stops Houston Hobby Austin Bergstrom

12:45 pm - 8:45 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

9h 00m2 stops Dallas Love Field Austin Bergstrom

$407Southwest

Thu, Nov 26 - Wed, Dec 2

7:10 am - 2:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

6h 45m1 stop Austin Bergstrom

8:25 am - 3:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 25m2 stops Lambert-St Louis Houston Hobby

$414Southwest

Thu, Nov 26 - Wed, Dec 2

2:47 pm - 11:57 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 10m1 stop Dallas/Fort Worth

5:00 am - 10:04 amDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 04m1 stop Dallas/Fort Worth

$439American Airlines

Fri, Dec 18 - Mon, Jan 4

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American Airlines flights from Harlingen to District of Columbia

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

American Airlines

Dec 23

HRL2:47 pmHarlingen Valley Intl

8h 10m

1 stop

DCA11:57 pmWashington, D.C. Reagan-National

Dec 29

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

6h 04m

1 stop

HRL10:04 amHarlingen Valley Intl

$378

American Airlines

Dec 18

HRL2:47 pmHarlingen Valley Intl

8h 10m

1 stop

DCA11:57 pmWashington, D.C. Reagan-National

Jan 4

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

6h 04m

1 stop

HRL10:04 amHarlingen Valley Intl

$439

American Airlines

Dec 18

HRL2:47 pmHarlingen Valley Intl

8h 10m

1 stop

DCA11:57 pmWashington, D.C. Reagan-National

Jan 4

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

6h 04m

1 stop

HRL10:04 amHarlingen Valley Intl

$448

United Airlines flights from Harlingen to District of Columbia

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

United Airlines

Nov 26

HRL1:59 pmHarlingen Valley Intl

5h 25m

1 stop

IAD8:24 pmWashington, D.C. Dulles Intl

Dec 2

IAD2:24 pmWashington, D.C. Dulles Intl

8h 35m

1 stop

HRL9:59 pmHarlingen Valley Intl

$297

United Airlines

Nov 25

HRL5:25 pmHarlingen Valley Intl

6h 12m

1 stop

IAD12:37 amWashington, D.C. Dulles Intl

Dec 2

IAD6:00 amWashington, D.C. Dulles Intl

6h 14m

1 stop

HRL11:14 amHarlingen Valley Intl

$359

United Airlines

Nov 26

HRL1:59 pmHarlingen Valley Intl

5h 25m

1 stop

IAD8:24 pmWashington, D.C. Dulles Intl

Dec 1

IAD6:00 amWashington, D.C. Dulles Intl

6h 14m

1 stop

HRL11:14 amHarlingen Valley Intl

$372

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

Quickest round-trip

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

1:59 pm-8:58 pm

1 stop5h 59m

Washington, D.C. Reagan-National

Wed 12/2

10:54 am-3:50 pm

1 stop5h 56m

$297

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - IAD Washington, D.C. Dulles Intl

HRLIAD

Harlingen Valley Intl

Thu 11/26

1:59 pm-8:24 pm

1 stop5h 25m

Washington, D.C. Dulles Intl

Wed 12/2

2:24 pm-9:59 pm

1 stop8h 35m

$297

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

1:59 pm-8:58 pm

1 stop5h 59m

Washington, D.C. Reagan-National

Wed 12/2

6:05 am-11:14 am

1 stop6h 09m

$359

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Wed 11/25

5:05 am-11:47 am

1 stop5h 42m

Washington, D.C. Reagan-National

Wed 12/2

4:30 pm-9:59 pm

1 stop6h 29m

$359

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Wed 11/25

2:18 pm-10:00 pm

1 stop6h 42m

Washington, D.C. Reagan-National

Wed 12/2

6:00 am-1:37 pm

2 stops8h 37m

$364

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Wed 12/23

2:47 pm-11:57 pm

1 stop8h 10m

Washington, D.C. Reagan-National

Tue 12/29

5:00 am-10:04 am

1 stop6h 04m

$378

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

7:10 am-2:55 pm

1 stop6h 45m

Washington, D.C. Reagan-National

Wed 12/2

8:25 am-3:50 pm

2 stops8h 25m

$383

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

5:55 am-2:55 pm

2 stops8h 00m

Washington, D.C. Reagan-National

Wed 12/2

12:45 pm-8:45 pm

2 stops9h 00m

$407

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Thu 11/26

7:10 am-2:55 pm

1 stop6h 45m

Washington, D.C. Reagan-National

Wed 12/2

8:25 am-3:50 pm

2 stops8h 25m

$414

HarlingenWashington, D.C.

HRL Harlingen Valley Intl - DCA Washington, D.C. Reagan-National

HRLDCA

Harlingen Valley Intl

Fri 12/18

2:47 pm-11:57 pm

1 stop8h 10m

Washington, D.C. Reagan-National

Mon 1/4

5:00 am-10:04 am

1 stop6h 04m

$439

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

Prices

Airlines

What is the cheapest month to fly to District of Columbia?

In general, March is the cheapest month to fly from Harlingen to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit District of Columbia in March, then you should wait until February to fly from Harlingen, when ticket prices are also cheap, with an average price of $0.

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

Best Price Found	$180
Fastest flight time	5h 25m
Direct flights	None

The best one-way flight to District of Columbia from Harlingen in the past 72 hours is $180. The best round-trip flight deal from Harlingen to District of Columbia found on momondo in the last 72 hours is $297.

The fastest flight from Harlingen to District of Columbia takes 5h 25m

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 2 as of October 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 $242	Free Cancellation	Rating 7.9 4,217 reviews		Search Southwest flights
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.3 10,453 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.