Which layover airport offers the lowest fares from Harlingen to Washington, D.C.?

Flights via Houston (HOU) offer the lowest average round-trip price of $256.

Which layover airport has the shortest connection time from Harlingen to Washington, D.C.?

Houston (HOU) has the shortest average layover time for this route: 2h 35m.

Which layover airport has the shortest travel time from Harlingen to Washington, D.C.?

Flights connecting via Houston (HOU) have the shortest average one-way travel time: 4h 45m.

What airlines fly to Washington, D.C.?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Washington, D.C. 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 Washington, D.C.. Keep in mind that there are 3 different airlines that fly to Washington, D.C. 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 Washington, D.C.?

Southwest and United Airlines are the most popular carriers operating from Harlingen Valley Intl to Washington, D.C.

Which airport is the most popular layover for flights between Harlingen and Washington, D.C.?

Houston (HOU) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

When did momondo last update prices for flights from Harlingen Valley Intl Airport to Washington, D.C.?

Prices for flights from Harlingen Valley Intl Airport to Washington, D.C. are refreshed on a daily basis.

How many operators does momondo search for flights from Harlingen Valley Intl Airport to Washington, D.C.?

The number of operators available for flights from Harlingen Valley Intl Airport to Washington, D.C. is 2 as of June 2026.

How old do you have to be to fly from Harlingen Valley Intl Airport to Washington, D.C.?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$113 Cheap Flights from Harlingen to Washington, D.C. in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to Washington, D.C.

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:30 am - 8:25 pm

HRL

BWI

7h 55m

1 stop

4:55 pm - 8:55 pm

BWI

HRL

5h 00m

1 stop

$268Southwest

Sat, Aug 29 - Sat, Sep 12

7:25 am - 3:25 pm

HRL

BWI

7h 00m

1 stop

3:25 pm - 8:30 pm

BWI

HRL

6h 05m

1 stop

$269Southwest

Tue, Sep 1 - Fri, Sep 18

7:00 am - 1:35 pm

HRL

BWI

5h 35m

1 stop

2:20 pm - 8:55 pm

BWI

HRL

7h 35m

2 stops

$274Southwest

Sat, Aug 29 - Sat, Sep 12

6:05 am - 5:00 pm

HRL

BWI

9h 55m

2 stops

2:20 pm - 8:55 pm

BWI

HRL

7h 35m

2 stops

$279Southwest

Sat, Aug 29 - Sat, Sep 12

7:25 am - 5:05 pm

HRL

BWI

8h 40m

2 stops

3:15 pm - 10:00 pm

BWI

HRL

7h 45m

2 stops

$283Southwest

Tue, Sep 1 - Fri, Sep 18

2:00 pm - 11:29 pm

HRL

DCA

8h 29m

1 stop

6:10 am - 1:31 pm

DCA

HRL

8h 21m

1 stop

$306Delta

Thu, Oct 22 - Thu, Nov 19

7:20 am - 1:57 pm

HRL

DCA

5h 37m

1 stop

2:55 pm - 9:54 pm

DCA

HRL

7h 59m

1 stop

$313United Airlines

Wed, Jul 8 - Tue, Jul 14

5:10 am - 11:20 am

HRL

BWI

5h 10m

1 stop

6:05 am - 10:59 am

BWI

HRL

5h 54m

1 stop

$325United Airlines

Tue, Nov 17 - Wed, Nov 18

10:34 am - 6:27 pm

HRL

IAD

6h 53m

1 stop

7:57 am - 4:58 pm

IAD

HRL

10h 01m

2 stops

$451American Airlines

Sat, Aug 29 - Sat, Sep 12

5:54 am - 5:04 pm

HRL

IAD

10h 10m

2 stops

7:57 am - 4:58 pm

IAD

HRL

10h 01m

2 stops

$523American Airlines

Sat, Aug 29 - Sat, Sep 12

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United Airlines flights from Harlingen to Washington, D.C.

Our best United Airlines deals on Harlingen to Washington, D.C. flight tickets

United Airlines

Jul 8

HRL7:20 amHarlingen Valley Intl

5h 37m

1 stop

DCA1:57 pmWashington, D.C. Reagan-National

Jul 14

DCA2:55 pmWashington, D.C. Reagan-National

7h 59m

1 stop

HRL9:54 pmHarlingen Valley Intl

$313

United Airlines

Nov 17

HRL5:10 amHarlingen Valley Intl

5h 10m

1 stop

BWI11:20 amBaltimore/Washington

Nov 18

BWI6:05 amBaltimore/Washington

5h 54m

1 stop

HRL10:59 amHarlingen Valley Intl

$325

United Airlines

Nov 17

HRL5:10 amHarlingen Valley Intl

11h 03m

2 stops

BWI5:13 pmBaltimore/Washington

Nov 18

BWI6:05 amBaltimore/Washington

5h 54m

1 stop

HRL10:59 amHarlingen Valley Intl

$330

American Airlines flights from Harlingen to Washington, D.C.

Our best American Airlines deals on Harlingen to Washington, D.C. flight tickets

American Airlines

Aug 29

HRL10:34 amHarlingen Valley Intl

6h 53m

1 stop

IAD6:27 pmWashington, D.C. Dulles Intl

Sep 12

IAD7:57 amWashington, D.C. Dulles Intl

10h 01m

2 stops

HRL4:58 pmHarlingen Valley Intl

$451

American Airlines

Jun 13

HRL5:18 pmHarlingen Valley Intl

5h 41m

1 stop

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

Jun 16

DCA8:30 amWashington, D.C. Reagan-National

8h 55m

1 stop

HRL4:25 pmHarlingen Valley Intl

$476

American Airlines

Jul 17

HRL4:58 pmHarlingen Valley Intl

6h 01m

1 stop

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

Jul 21

DCA11:56 amWashington, D.C. Reagan-National

9h 16m

2 stops

HRL8:12 pmHarlingen Valley Intl

$516

momondo Fare Finder

Use the filters below to find and compare flights from Harlingen to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sat 8/29

11:30 am-8:25 pm

1 stop7h 55m

Baltimore/Washington

Sat 9/12

4:55 pm-8:55 pm

1 stop5h 00m

$268

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Tue 9/1

7:25 am-3:25 pm

1 stop7h 00m

Baltimore/Washington

Fri 9/18

3:25 pm-8:30 pm

1 stop6h 05m

$269

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sat 8/29

7:00 am-1:35 pm

1 stop5h 35m

Baltimore/Washington

Sat 9/12

2:20 pm-8:55 pm

2 stops7h 35m

$274

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sat 8/29

6:05 am-5:00 pm

2 stops9h 55m

Baltimore/Washington

Sat 9/12

2:20 pm-8:55 pm

2 stops7h 35m

$279

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Tue 9/1

7:25 am-5:05 pm

2 stops8h 40m

Baltimore/Washington

Fri 9/18

3:15 pm-10:00 pm

2 stops7h 45m

$283

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Thu 10/22

2:00 pm-11:29 pm

1 stop8h 29m

Washington, D.C. Reagan-National

Thu 11/19

6:10 am-1:31 pm

1 stop8h 21m

$306

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Wed 7/8

7:20 am-1:57 pm

1 stop5h 37m

Washington, D.C. Reagan-National

Tue 7/14

2:55 pm-9:54 pm

1 stop7h 59m

$313

Quickest round-trip

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Tue 11/17

5:10 am-11:20 am

1 stop5h 10m

Baltimore/Washington

Wed 11/18

6:05 am-10:59 am

1 stop5h 54m

$325

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 8/29

10:34 am-6:27 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Sat 9/12

7:57 am-4:58 pm

2 stops10h 01m

$451

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 8/29

5:54 am-5:04 pm

2 stops10h 10m

Washington, D.C. Dulles Intl

Sat 9/12

7:57 am-4:58 pm

2 stops10h 01m

$523

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 Washington, D.C.

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

Layovers

What is the cheapest month to fly to Washington, D.C.?

The month of November is, on average, the cheapest month to fly to Washington, D.C. from Harlingen, with most prices found around $0. If you’re not able to fly to Washington, D.C. in November, then February is your next best option. Flight prices from Harlingen to Washington, D.C. during February average around $0.

Can stopping save me money on Harlingen to Washington, D.C. flights?

You could potentially save up to 44% on your flight if you consider stops on a Harlingen to Washington, D.C. flight.

When to book flights from Harlingen to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Harlingen to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Harlingen to Washington, D.C. (HRL to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen to Washington, D.C.

Fastest flight time	5h 00m
Direct flights	None

The fastest flight from Harlingen to Washington, D.C. takes 5h 00m

There are no direct flights from Harlingen to Washington, D.C.. There are no popular flight routes from Harlingen to Washington, D.C..

Search flight deals

Frequently asked questions about flying from Harlingen to Washington, D.C.

How far is Harlingen Valley Intl to Washington, D.C. by plane?
A flight from Harlingen Valley Intl to Washington, D.C. will travel around 1482.9 mi. By plane, this route typically takes 5h 00m.
When did momondo last update prices for flights from Harlingen Valley Intl Airport to Washington, D.C.?
Prices for flights from Harlingen Valley Intl Airport to Washington, D.C. are refreshed on a daily basis.
How many operators does momondo search for flights from Harlingen Valley Intl Airport to Washington, D.C.?
The number of operators available for flights from Harlingen Valley Intl Airport to Washington, D.C. is 2 as of June 2026.
How old do you have to be to fly from Harlingen Valley Intl Airport to Washington, D.C.?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Harlingen to Washington, D.C.?
Based on momondo bookings for flights between Harlingen and Washington, D.C., the leading airline is Southwest, making up 100% of the total bookings.

Best airlines flying from Harlingen to Washington, D.C.

Compare and see reviews for airlines that fly from Harlingen to Washington, D.C. with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $155	Free Cancellation	Rating 7.9 4,234 reviews		Search Southwest flights
United Airlines	PriceFrom $270	Free Cancellation	Rating 7.4 9,811 reviews		Search United Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Gaithersburg

Fredericksburg

Colonial Beach

Rockville

Silver Spring

Linthicum Heights

Towson

Manassas

Tysons

Springfield

Fairfax

Bethesda

College Park

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We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Harlingen to Washington, D.C. for you.

Can I find flights from Harlingen to Washington, D.C. with flexible booking policies on momondo?

All flight searches from Harlingen to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Harlingen to Washington, D.C.?

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 Washington, D.C..

I’m not ready to book a flight from Harlingen to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. 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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Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Harlingen to Washington, D.C. from $113

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 to Washington, D.C. departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Harlingen to Washington, D.C.

Our best United Airlines deals on Harlingen to Washington, D.C. flight tickets

American Airlines flights from Harlingen to Washington, D.C.

Our best American Airlines deals on Harlingen to Washington, D.C. flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Harlingen to Washington, D.C. that are best for you.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Harlingen to Washington, D.C.

What is the cheapest month to fly to Washington, D.C.?

Can stopping save me money on Harlingen to Washington, D.C. flights?

What is the cheapest airline that flies from Harlingen Valley Intl to Washington, D.C.?

What airlines fly to Washington, D.C.?

Which airport is the most popular layover for flights between Harlingen and Washington, D.C.?

Which layover airport offers the lowest fares from Harlingen to Washington, D.C.?

Which layover airport has the shortest travel time from Harlingen to Washington, D.C.?

Which layover airport has the shortest connection time from Harlingen to Washington, D.C.?

When to book flights from Harlingen to Washington, D.C.

Cheap Harlingen to Washington, D.C. (HRL to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen to Washington, D.C.

Fastest flight time

Direct flights

Frequently asked questions about flying from Harlingen to Washington, D.C.

Best airlines flying from Harlingen to Washington, D.C.

Compare and see reviews for airlines that fly from Harlingen to Washington, D.C. with momondo

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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