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

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

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 60% 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.

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 April 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.

$139 Cheap Flights from Harlingen to Washington, D.C. in 2026

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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.

4:02 pm - 11:26 pm

HRL

BWI

6h 24m

1 stop

6:08 am - 3:05 pm

BWI

HRL

9h 57m

1 stop

$277Delta

Sat, Apr 25 - Wed, Apr 29

5:18 pm - 11:58 pm

HRL

DCA

5h 40m

1 stop

2:35 pm - 8:00 pm

DCA

HRL

6h 25m

1 stop

$280United Airlines

Sat, May 9 - Mon, May 11

12:10 pm - 8:40 pm

HRL

BWI

7h 30m

1 stop

3:10 pm - 10:00 pm

BWI

HRL

7h 50m

2 stops

$282Southwest

Sat, Apr 25 - Wed, Apr 29

5:15 am - 11:28 am

HRL

IAD

5h 13m

1 stop

8:33 am - 1:14 pm

IAD

HRL

5h 41m

1 stop

$283United Airlines

Wed, Sep 2 - Wed, Sep 16

6:05 am - 5:15 pm

HRL

BWI

10h 10m

2 stops

3:10 pm - 10:00 pm

BWI

HRL

7h 50m

2 stops

$287Southwest

Sat, Apr 25 - Wed, Apr 29

10:45 am - 6:00 pm

HRL

BWI

6h 15m

1 stop

7:15 am - 11:45 am

BWI

HRL

5h 30m

1 stop

$313Southwest

Wed, May 27 - Mon, Jun 1

12:50 pm - 9:10 pm

HRL

BWI

7h 20m

2 stops

7:15 am - 11:45 am

BWI

HRL

5h 30m

1 stop

$318Southwest

Wed, May 27 - Mon, Jun 1

7:00 am - 4:30 pm

HRL

BWI

8h 30m

1 stop

5:00 pm - 11:00 pm

BWI

HRL

7h 00m

2 stops

$328Southwest

Sat, May 9 - Mon, May 11

2:51 pm - 11:26 pm

HRL

IAD

7h 35m

1 stop

5:59 pm - 10:51 pm

IAD

HRL

5h 52m

1 stop

$415American Airlines

Sat, May 9 - Mon, May 11

5:54 am - 2:03 pm

HRL

IAD

7h 09m

1 stop

6:58 am - 4:31 pm

IAD

HRL

10h 33m

2 stops

$445American Airlines

Wed, Sep 2 - Wed, Sep 16

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

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

United Airlines

May 9

HRL5:18 pmHarlingen Valley Intl

5h 40m

1 stop

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

May 11

DCA2:35 pmWashington, D.C. Reagan-National

6h 25m

1 stop

HRL8:00 pmHarlingen Valley Intl

$280

United Airlines

Sep 2

HRL5:15 amHarlingen Valley Intl

5h 13m

1 stop

IAD11:28 amWashington, D.C. Dulles Intl

Sep 16

IAD8:33 amWashington, D.C. Dulles Intl

5h 41m

1 stop

HRL1:14 pmHarlingen Valley Intl

$283

United Airlines

May 2

HRL5:18 pmHarlingen Valley Intl

5h 40m

1 stop

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

May 11

DCA4:34 pmWashington, D.C. Reagan-National

6h 25m

1 stop

HRL9:59 pmHarlingen Valley Intl

$325

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

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

American Airlines

Apr 24

HRL2:47 pmHarlingen Valley Intl

8h 12m

2 stops

IAD11:59 pmWashington, D.C. Dulles Intl

Apr 28

IAD5:59 pmWashington, D.C. Dulles Intl

5h 52m

1 stop

HRL10:51 pmHarlingen Valley Intl

$375

American Airlines

May 9

HRL2:51 pmHarlingen Valley Intl

7h 35m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

May 11

IAD5:59 pmWashington, D.C. Dulles Intl

5h 52m

1 stop

HRL10:51 pmHarlingen Valley Intl

$415

American Airlines

Jul 4

HRL5:18 pmHarlingen Valley Intl

6h 00m

1 stop

BWI12:18 amBaltimore/Washington

Jul 7

BWI7:16 pmBaltimore/Washington

5h 58m

1 stop

HRL12:14 amHarlingen Valley Intl

$418

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 4/25

4:02 pm-11:26 pm

1 stop6h 24m

Baltimore/Washington

Wed 4/29

6:08 am-3:05 pm

1 stop9h 57m

$277

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Sat 5/9

5:18 pm-11:58 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Mon 5/11

2:35 pm-8:00 pm

1 stop6h 25m

$280

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sat 4/25

12:10 pm-8:40 pm

1 stop7h 30m

Baltimore/Washington

Wed 4/29

3:10 pm-10:00 pm

2 stops7h 50m

$282

Quickest round-trip

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Wed 9/2

5:15 am-11:28 am

1 stop5h 13m

Washington, D.C. Dulles Intl

Wed 9/16

8:33 am-1:14 pm

1 stop5h 41m

$283

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sat 4/25

6:05 am-5:15 pm

2 stops10h 10m

Baltimore/Washington

Wed 4/29

3:10 pm-10:00 pm

2 stops7h 50m

$287

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Wed 5/27

10:45 am-6:00 pm

1 stop6h 15m

Baltimore/Washington

Mon 6/1

7:15 am-11:45 am

1 stop5h 30m

$313

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Wed 5/27

12:50 pm-9:10 pm

2 stops7h 20m

Baltimore/Washington

Mon 6/1

7:15 am-11:45 am

1 stop5h 30m

$318

HarlingenBaltimore

HRL - BWI

HRLBWI

Harlingen Valley Intl

Sat 5/9

7:00 am-4:30 pm

1 stop8h 30m

Baltimore/Washington

Mon 5/11

5:00 pm-11:00 pm

2 stops7h 00m

$328

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Sat 5/9

2:51 pm-11:26 pm

1 stop7h 35m

Washington, D.C. Dulles Intl

Mon 5/11

5:59 pm-10:51 pm

1 stop5h 52m

$415

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Wed 9/2

5:54 am-2:03 pm

1 stop7h 09m

Washington, D.C. Dulles Intl

Wed 9/16

6:58 am-4:31 pm

2 stops10h 33m

$445

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

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

You could potentially save up to 32% 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	4h 50m
Direct flights	None

The fastest flight from Harlingen to Washington, D.C. takes 4h 50m

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 4h 50m.
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 April 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 8.0 4,331 reviews		Search Southwest flights
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.4 9,586 reviews		Search United Airlines flights

Alexandria

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Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Colonial Beach

Gaithersburg

Towson

Fredericksburg

Silver Spring

Rockville

Manassas

Tysons

Linthicum Heights

Bethesda

Fairfax

Springfield

College Park

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Why should I use momondo to find a flight deal from Harlingen to Washington, D.C.?

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.

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Washington, D.C. Dulles Intl Airport

Cheap flights from Harlingen to Washington, D.C. from $139

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 5/4. 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.

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.?

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.

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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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