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 September 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.

$170 Cheap Flights from Harlingen to District of Columbia in 2026

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.

4:30 pm - 11:00 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 30m1 stop Houston Hobby

11:40 am - 3:50 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 10m1 stop Houston Hobby

$339Southwest

Thu, Dec 3 - Mon, Dec 7

5:18 pm - 11:59 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 41m1 stop Houston George Bush Intcntl

8:55 am - 3:59 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 04m1 stop Houston George Bush Intcntl

$339United Airlines

Thu, Oct 1 - Mon, Oct 5

2:13 pm - 11:44 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 31m1 stop Minneapolis St Paul

6:05 am - 1:23 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 18m1 stop Minneapolis St Paul

$339Delta

Thu, Oct 8 - Sat, Oct 10

2:13 pm - 11:26 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

8h 13m1 stop Minneapolis St Paul

7:23 am - 1:23 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

7h 00m1 stop Minneapolis St Paul

$339Delta

Thu, Oct 8 - Sat, Oct 10

7:10 am - 1:40 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 30m1 stop Houston George Bush Intcntl

10:58 am - 4:01 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

6h 03m1 stop Houston George Bush Intcntl

$339United Airlines

Thu, Oct 29 - Fri, Oct 30

5:18 pm - 12:30 amHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

6h 12m1 stop Houston George Bush Intcntl

3:02 pm - 7:44 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

5h 42m1 stop Houston George Bush Intcntl

$339United Airlines

Thu, Oct 1 - Mon, Oct 5

4:30 pm - 11:00 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

5h 30m1 stop Houston Hobby

2:40 pm - 9:45 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 05m2 stops Lambert-St Louis Houston Hobby

$344Southwest

Thu, Dec 3 - Mon, Dec 7

2:13 pm - 11:44 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 31m1 stop Minneapolis St Paul

6:10 am - 1:23 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

8h 13m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul

$344Delta

Thu, Oct 8 - Sat, Oct 10

1:50 pm - 10:55 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 05m1 stop Dallas Love Field

5:05 pm - 11:40 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

7h 35m2 stops Nashville Intl Houston Hobby

$369Southwest

Thu, Oct 1 - Mon, Oct 5

5:30 am - 2:35 pmHRL Harlingen Valley Intl-DCA Washington, D.C. Reagan-National

8h 05m2 stops Houston Hobby Dallas Love Field

6:55 pm - 11:40 pmDCA Washington, D.C. Reagan-National-HRL Harlingen Valley Intl

5h 45m1 stop Houston Hobby

$374Southwest

Thu, Oct 29 - Fri, Oct 30

Cheap last minute flights

Enter your travel dates to find the best prices.

5:18 pm - 11:55 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

5h 37m1 stop Houston George Bush Intcntl

8:31 am - 3:59 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

8h 28m1 stop Houston George Bush Intcntl

$529United Airlines

Mon, Sep 14 - Fri, Sep 18

5:18 pm - 11:55 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

5h 37m1 stop Houston George Bush Intcntl

3:02 pm - 7:39 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

5h 37m1 stop Houston George Bush Intcntl

$650United Airlines

Mon, Sep 14 - Thu, Sep 17

5:51 am - 2:18 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

7h 27m1 stop Dallas/Fort Worth

3:08 pm - 10:48 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

8h 40m1 stop Dallas/Fort Worth

$655American Airlines

Fri, Sep 18 - Sun, Sep 20

5:51 am - 2:18 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

7h 27m1 stop Dallas/Fort Worth

3:08 pm - 10:48 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

8h 40m1 stop Dallas/Fort Worth

$720American Airlines

Fri, Sep 18 - Sun, Sep 20

10:45 am - 10:51 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

11h 06m2 stops Dallas/Fort Worth Charlotte Douglas

3:08 pm - 10:48 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

8h 40m1 stop Dallas/Fort Worth

$758American Airlines

Fri, Sep 18 - Sun, Sep 20

10:45 am - 10:51 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

11h 06m2 stops Dallas/Fort Worth Charlotte Douglas

3:08 pm - 10:48 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

8h 40m1 stop Dallas/Fort Worth

$792American Airlines

Fri, Sep 18 - Sun, Sep 20

5:18 pm - 11:55 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

5h 37m1 stop Houston George Bush Intcntl

10:22 pm - 3:59 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

18h 37m2 stops Cleveland Hopkins Intl Houston George Bush Intcntl

$801United Airlines

Mon, Sep 14 - Fri, Sep 18

10:45 am - 8:24 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

8h 39m1 stop Dallas/Fort Worth

7:57 am - 4:06 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

9h 09m2 stops Charlotte Douglas Dallas/Fort Worth

$826American Airlines

Mon, Sep 14 - Thu, Sep 17

10:45 am - 10:51 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

11h 06m2 stops Dallas/Fort Worth Charlotte Douglas

6:14 am - 4:06 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

10h 52m2 stops Charlotte Douglas Dallas/Fort Worth

$831American Airlines

Mon, Sep 14 - Thu, Sep 17

10:45 am - 10:51 pmHRL Harlingen Valley Intl-IAD Washington, D.C. Dulles Intl

11h 06m2 stops Dallas/Fort Worth Charlotte Douglas

6:32 am - 4:06 pmIAD Washington, D.C. Dulles Intl-HRL Harlingen Valley Intl

10h 34m2 stops Charlotte Douglas Dallas/Fort Worth

$947American Airlines

Fri, Sep 18 - Sun, Sep 20

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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

Sep 30

HRL5:28 pmHarlingen Valley Intl

5h 31m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

Oct 5

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

6h 50m

1 stop

HRL10:50 pmHarlingen Valley Intl

$384

American Airlines

Sep 23

HRL5:51 amHarlingen Valley Intl

6h 52m

1 stop

DCA1:43 pmWashington, D.C. Reagan-National

Sep 27

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

5h 58m

1 stop

HRL9:58 amHarlingen Valley Intl

$409

American Airlines

Nov 13

HRL2:26 pmHarlingen Valley Intl

8h 04m

1 stop

IAD11:30 pmWashington, D.C. Dulles Intl

Nov 15

IAD7:14 amWashington, D.C. Dulles Intl

7h 42m

1 stop

HRL1:56 pmHarlingen Valley Intl

$454

United Airlines flights from Harlingen to District of Columbia

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

United Airlines

Oct 1

HRL5:18 pmHarlingen Valley Intl

6h 12m

1 stop

IAD12:30 amWashington, D.C. Dulles Intl

Oct 5

IAD3:02 pmWashington, D.C. Dulles Intl

5h 42m

1 stop

HRL7:44 pmHarlingen Valley Intl

$339

United Airlines

Nov 24

HRL5:25 pmHarlingen Valley Intl

6h 12m

1 stop

IAD12:37 amWashington, D.C. Dulles Intl

Dec 1

IAD6:00 amWashington, D.C. Dulles Intl

6h 14m

1 stop

HRL11:14 amHarlingen Valley Intl

$359

United Airlines

Oct 25

HRL5:25 pmHarlingen Valley Intl

6h 12m

1 stop

IAD12:37 amWashington, D.C. Dulles Intl

Oct 29

IAD2:38 pmWashington, D.C. Dulles Intl

6h 09m

1 stop

HRL7:47 pmHarlingen Valley Intl

$377

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 12/3

4:30 pm-11:00 pm

1 stop5h 30m

Washington, D.C. Reagan-National

Mon 12/7

11:40 am-3:50 pm

1 stop5h 10m

$339

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/1

5:18 pm-11:59 pm

1 stop5h 41m

Washington, D.C. Reagan-National

Mon 10/5

8:55 am-3:59 pm

1 stop8h 04m

$339

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/8

2:13 pm-11:44 pm

1 stop8h 31m

Washington, D.C. Reagan-National

Sat 10/10

6:05 am-1:23 pm

1 stop8h 18m

$339

HarlingenWashington, D.C.

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

HRLIAD

Harlingen Valley Intl

Thu 10/8

2:13 pm-11:26 pm

1 stop8h 13m

Washington, D.C. Dulles Intl

Sat 10/10

7:23 am-1:23 pm

1 stop7h 00m

$339

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/29

7:10 am-1:40 pm

1 stop5h 30m

Washington, D.C. Reagan-National

Fri 10/30

10:58 am-4:01 pm

1 stop6h 03m

$339

HarlingenWashington, D.C.

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

HRLIAD

Harlingen Valley Intl

Thu 10/1

5:18 pm-12:30 am

1 stop6h 12m

Washington, D.C. Dulles Intl

Mon 10/5

3:02 pm-7:44 pm

1 stop5h 42m

$339

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 12/3

4:30 pm-11:00 pm

1 stop5h 30m

Washington, D.C. Reagan-National

Mon 12/7

2:40 pm-9:45 pm

2 stops8h 05m

$344

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/8

2:13 pm-11:44 pm

1 stop8h 31m

Washington, D.C. Reagan-National

Sat 10/10

6:10 am-1:23 pm

2 stops8h 13m

$344

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/1

1:50 pm-10:55 pm

1 stop8h 05m

Washington, D.C. Reagan-National

Mon 10/5

5:05 pm-11:40 pm

2 stops7h 35m

$369

HarlingenWashington, D.C.

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

HRLDCA

Harlingen Valley Intl

Thu 10/29

5:30 am-2:35 pm

2 stops8h 05m

Washington, D.C. Reagan-National

Fri 10/30

6:55 pm-11:40 pm

1 stop5h 45m

$374

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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?

American Airlines and United Airlines 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 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 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	$170
Fastest flight time	5h 30m
Direct flights	None

The best one-way flight to District of Columbia from Harlingen in the past 72 hours is $170. The best round-trip flight deal from Harlingen to District of Columbia found on momondo in the last 72 hours is $339.

The fastest flight from Harlingen to District of Columbia takes 5h 30m

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 September 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
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.4 10,206 reviews		Search United Airlines flights
Southwest	PriceFrom $290	Free Cancellation	Rating 8.0 4,192 reviews		Search Southwest 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.