What airlines fly to Harlingen?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Harlingen from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Harlingen. Keep in mind that there are 3 different airlines that fly to Harlingen on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Harlingen?

On average, it takes 5h 58m to fly from Washington, D.C. to Harlingen if you fly out of Baltimore (the most popular airport in Washington, D.C.) and into McAllen (the most popular airport in Harlingen). If you’re flying out of Washington, D.C. and into McAllen, then the flight time is around 6h 10m.

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

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 5h 29m.

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

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

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

Houston (IAH) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

How many flights depart from Washington, D.C. to Harlingen on average per week?

The number of flights available between Washington, D.C. and Harlingen is 3 per week as of June 2026. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.

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

Flights via Houston (HOU) offer the lowest average round-trip price of $369.

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

Houston (IAH) has the shortest average layover time for this route: 1h 10m.

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

Prices for flights from Washington, D.C. to Harlingen Valley Intl Airport refresh daily.

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

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

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

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 Washington, D.C. to Harlingen Valley Intl Airport.

What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

The required travel and health documents for your Harlingen Valley Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Harlingen Valley Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$165 Cheap Flights from Washington, D.C. to Harlingen in 2026

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:56 pm - 10:54 pm

BWI

HRL

7h 58m

1 stop

3:17 pm - 11:41 pm

HRL

BWI

7h 24m

1 stop

$284American Airlines

週四, 8月 27 - 週一, 8月 31

6:30 am - 3:20 pm

DCA

HRL

9h 50m

1 stop

5:30 am - 2:10 pm

HRL

DCA

7h 40m

2 stops

$323Southwest

週六, 10月 17 - 週一, 10月 26

6:20 am - 12:05 pm

BWI

HRL

6h 45m

1 stop

2:10 pm - 8:30 pm

HRL

BWI

5h 20m

1 stop

$341Southwest

週二, 7月 21 - 週三, 7月 29

6:20 am - 12:05 pm

BWI

HRL

6h 45m

1 stop

2:10 pm - 11:00 pm

HRL

BWI

7h 50m

2 stops

$346Southwest

週二, 7月 21 - 週三, 7月 29

6:00 am - 1:24 pm

DCA

HRL

8h 24m

1 stop

5:18 pm - 11:59 pm

HRL

DCA

5h 41m

1 stop

$349United Airlines

週四, 8月 27 - 週一, 8月 31

8:31 am - 1:24 pm

IAD

HRL

5h 53m

1 stop

5:18 pm - 11:55 pm

HRL

IAD

5h 37m

1 stop

$349United Airlines

週四, 8月 27 - 週一, 8月 31

7:00 am - 1:30 pm

BWI

HRL

7h 30m

2 stops

2:10 pm - 11:00 pm

HRL

BWI

7h 50m

2 stops

$351Southwest

週二, 7月 21 - 週三, 7月 29

3:56 pm - 10:54 pm

BWI

HRL

7h 58m

1 stop

3:17 pm - 11:41 pm

HRL

BWI

7h 24m

1 stop

$359American Airlines

週四, 8月 27 - 週一, 8月 31

6:10 am - 1:31 pm

IAD

HRL

8h 21m

2 stops

2:00 pm - 12:20 am

HRL

IAD

9h 20m

2 stops

$374Delta

週六, 10月 17 - 週一, 10月 26

7:30 am - 1:31 pm

IAD

HRL

7h 01m

1 stop

2:00 pm - 12:20 am

HRL

IAD

9h 20m

2 stops

$399Delta

週六, 10月 17 - 週一, 10月 26

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

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

American Airlines

Aug 27

BWI3:56 pmBaltimore/Washington

7h 58m

1 stop

HRL10:54 pmHarlingen Valley Intl

Aug 31

HRL3:17 pmHarlingen Valley Intl

7h 24m

1 stop

BWI11:41 pmBaltimore/Washington

$284

American Airlines

Aug 27

BWI3:56 pmBaltimore/Washington

7h 58m

1 stop

HRL10:54 pmHarlingen Valley Intl

Aug 31

HRL3:17 pmHarlingen Valley Intl

7h 24m

1 stop

BWI11:41 pmBaltimore/Washington

$359

American Airlines

Aug 27

BWI4:25 pmBaltimore/Washington

7h 29m

2 stops

HRL10:54 pmHarlingen Valley Intl

Aug 31

HRL3:17 pmHarlingen Valley Intl

7h 24m

1 stop

BWI11:41 pmBaltimore/Washington

$373

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

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

United Airlines

Aug 27

DCA6:00 amWashington, D.C. Reagan-National

8h 24m

1 stop

HRL1:24 pmHarlingen Valley Intl

Aug 31

HRL5:18 pmHarlingen Valley Intl

5h 41m

1 stop

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

$349

United Airlines

Oct 20

BWI3:04 pmBaltimore/Washington

7h 48m

1 stop

HRL9:52 pmHarlingen Valley Intl

Oct 21

HRL2:00 pmHarlingen Valley Intl

7h 34m

1 stop

BWI10:34 pmBaltimore/Washington

$376

United Airlines

Sep 26

DCA12:57 pmWashington, D.C. Reagan-National

7h 36m

1 stop

HRL7:33 pmHarlingen Valley Intl

Sep 30

HRL5:05 amHarlingen Valley Intl

5h 48m

1 stop

DCA11:53 amWashington, D.C. Reagan-National

$396

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

週四 8/27

3:56 pm-10:54 pm

1 stop7h 58m

Harlingen Valley Intl

週一 8/31

3:17 pm-11:41 pm

1 stop7h 24m

$284

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

週六 10/17

6:30 am-3:20 pm

1 stop9h 50m

Harlingen Valley Intl

週一 10/26

5:30 am-2:10 pm

2 stops7h 40m

$323

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

週二 7/21

6:20 am-12:05 pm

1 stop6h 45m

Harlingen Valley Intl

週三 7/29

2:10 pm-8:30 pm

1 stop5h 20m

$341

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

週二 7/21

6:20 am-12:05 pm

1 stop6h 45m

Harlingen Valley Intl

週三 7/29

2:10 pm-11:00 pm

2 stops7h 50m

$346

Washington, D.C.Harlingen

DCA - HRL

DCAHRL

Washington, D.C. Reagan-National

週四 8/27

6:00 am-1:24 pm

1 stop8h 24m

Harlingen Valley Intl

週一 8/31

5:18 pm-11:59 pm

1 stop5h 41m

$349

Quickest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

週四 8/27

8:31 am-1:24 pm

1 stop5h 53m

Harlingen Valley Intl

週一 8/31

5:18 pm-11:55 pm

1 stop5h 37m

$349

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

週二 7/21

7:00 am-1:30 pm

2 stops7h 30m

Harlingen Valley Intl

週三 7/29

2:10 pm-11:00 pm

2 stops7h 50m

$351

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

週四 8/27

3:56 pm-10:54 pm

1 stop7h 58m

Harlingen Valley Intl

週一 8/31

3:17 pm-11:41 pm

1 stop7h 24m

$359

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

週六 10/17

6:10 am-1:31 pm

2 stops8h 21m

Harlingen Valley Intl

週一 10/26

2:00 pm-12:20 am

2 stops9h 20m

$374

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

週六 10/17

7:30 am-1:31 pm

1 stop7h 01m

Harlingen Valley Intl

週一 10/26

2:00 pm-12:20 am

2 stops9h 20m

$399

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 Washington, D.C. to Harlingen

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

Other information

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

You could potentially save up to 25% on your flight if you consider stops on a Washington, D.C. to Harlingen flight.

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

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

Estimated round-trip price

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

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

Fastest flight time	5h 34m
Direct flights	None

The fastest flight from Washington, D.C. to Harlingen takes 5h 34m

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

Search flight deals

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

How far is Washington, D.C. to Harlingen Valley Intl by plane?
The distance between Washington, D.C. and Harlingen Valley Intl is about 1482.9 mi. By plane, this route typically takes 5h 34m.
When did momondo last update prices for flights from Washington, D.C. to Harlingen Valley Intl Airport?
Prices for flights from Washington, D.C. to Harlingen Valley Intl Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Harlingen Valley Intl Airport?
The number of operators available for flights from Washington, D.C. to Harlingen Valley Intl Airport is 2 as of June 2026.
How old do you have to be to fly from Washington, D.C. to Harlingen Valley Intl Airport?
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 Washington, D.C. to Harlingen Valley Intl Airport.
What documentation or ID do you need to fly to Harlingen Valley Intl Airport?
The required travel and health documents for your Harlingen Valley Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Harlingen Valley Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Washington, D.C. to Harlingen?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Harlingen is Southwest, representing 100% of all bookings.

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

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

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $266	Free Cancellation	Rating 7.9 4,240 reviews		Search Southwest flights

Southwest Flights From Washington, D.C. to Harlingen
Across 3 Southwest flights from Washington, D.C. to Harlingen this week, the average price was $343, with the best Southwest deals starting from $266 round-trip. 4,235 users have rated Southwest on momondo, with an average score of 7.9/10.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Harlingen. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Harlingen flights to just show those with flexible booking policies.

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

Once you have performed a search for Washington, D.C. to Harlingen flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Washington, D.C. to Harlingen now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Harlingen and let you know when they change.

An easier way to manage your Harlingen 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

週五 7/10

週五 7/17

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Washington, D.C.

Complete your trip

Feeling lucky

Cheap flights from Washington, D.C. to Harlingen from $165

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Harlingen departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

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

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

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

momondo Fare Finder

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

See travel insights to Harlingen from

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

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

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

What airlines fly to Harlingen?

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

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

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

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

How many flights depart from Washington, D.C. to Harlingen on average per week?

How long does it take to fly to Harlingen?

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

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

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

Fastest flight time

Direct flights

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

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

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

Southwest Flights From Washington, D.C. to Harlingen

Why use momondo?

An easier way to manage your Harlingen 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

Airports servicing Texas

Fly your favorite airline to Harlingen

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

Cabin classes currently available on flights to Harlingen

List of cabin classes available on flights landing in Harlingen. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Washington, D.C.

According to popular flight searches on momondo this year

Complete your trip to Harlingen

Explore popular destinations other users love

According to popular flight searches on momondo this year