What airlines fly to State of Washington?

American Airlines, Southwest and Delta are the top three most popular airlines that fly to State of Washington from Harlingen according to our data. American Airlines is the first choice among our users, with 79% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 3 different airlines that fly to State of Washington 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?

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

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

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

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

There are 2 operators available for flights from Harlingen Valley Intl Airport to Washington as of October 2026.

How old do you have to be to fly from Harlingen Valley Intl Airport to Washington?

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 Washington.

What documentation or ID do you need to fly to Washington?

The necessary travel and health documents for your Washington 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.

$162 Cheap Flights from Harlingen to Washington in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to Washington

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:35 pm - 10:54 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

8h 19m1 stop Houston George Bush Intcntl

7:00 am - 3:53 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

6h 53m1 stop Houston George Bush Intcntl

$337United Airlines

Wed, Jan 20 - Sat, Jan 23

7:10 am - 4:26 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

11h 16m2 stops Houston George Bush Intcntl San Francisco

11:59 pm - 11:14 amSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

9h 15m1 stop Houston George Bush Intcntl

$342United Airlines

Thu, Nov 26 - Thu, Dec 3

7:00 am - 1:13 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

8h 13m1 stop Houston George Bush Intcntl

8:56 am - 9:50 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

10h 54m2 stops San Francisco Houston George Bush Intcntl

$342United Airlines

Wed, Jan 20 - Sat, Jan 23

9:20 am - 6:49 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

11h 29m2 stops Houston George Bush Intcntl San Francisco

8:30 am - 9:50 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

11h 20m2 stops Denver Intl Houston George Bush Intcntl

$347United Airlines

Wed, Jan 20 - Sat, Jan 23

12:50 pm - 10:20 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

11h 30m2 stops Houston Hobby Las Vegas Harry Reid Intl

9:55 am - 7:40 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

7h 45m1 stop Austin Bergstrom

$381Southwest

Wed, Dec 2 - Sat, Dec 5

3:05 pm - 8:10 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

7h 05m1 stop Austin Bergstrom

9:10 am - 10:00 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

10h 50m2 stops Denver Intl Houston Hobby

$384Southwest

Fri, Jan 15 - Sun, Jan 17

12:50 pm - 10:20 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

11h 30m2 stops Houston Hobby Las Vegas Harry Reid Intl

6:45 am - 7:40 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

10h 55m2 stops Denver Intl Austin Bergstrom

$387Southwest

Wed, Dec 2 - Sat, Dec 5

2:24 pm - 10:38 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

10h 14m1 stop Dallas/Fort Worth

2:07 pm - 11:26 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

7h 19m1 stop Dallas/Fort Worth

$411American Airlines

Wed, Dec 2 - Sat, Dec 5

2:24 pm - 10:38 pmHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

10h 14m1 stop Dallas/Fort Worth

2:07 pm - 10:54 pmSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

6h 47m1 stop Dallas/Fort Worth

$444American Airlines

Wed, Dec 2 - Sun, Dec 6

7:21 pm - 12:59 amHRL Harlingen Valley Intl-SEA Seattle/Tacoma Intl

7h 38m1 stop Dallas/Fort Worth

11:59 pm - 10:04 amSEA Seattle/Tacoma Intl-HRL Harlingen Valley Intl

8h 05m1 stop Dallas/Fort Worth

$647American Airlines

Sat, Dec 26 - Tue, Dec 29

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

United Airlines flights from Harlingen to State of Washington

Our best United Airlines deals on Harlingen to State of Washington flight tickets

United Airlines

Jan 20

HRL4:35 pmHarlingen Valley Intl

8h 19m

1 stop

SEA10:54 pmSeattle/Tacoma Intl

Jan 23

SEA7:00 amSeattle/Tacoma Intl

6h 53m

1 stop

HRL3:53 pmHarlingen Valley Intl

$337

United Airlines

Nov 26

HRL7:10 amHarlingen Valley Intl

11h 16m

2 stops

SEA4:26 pmSeattle/Tacoma Intl

Dec 3

SEA11:59 pmSeattle/Tacoma Intl

9h 15m

1 stop

HRL11:14 amHarlingen Valley Intl

$342

United Airlines

Jan 20

HRL9:20 amHarlingen Valley Intl

11h 29m

2 stops

SEA6:49 pmSeattle/Tacoma Intl

Jan 23

SEA8:30 amSeattle/Tacoma Intl

11h 20m

2 stops

HRL9:50 pmHarlingen Valley Intl

$347

Southwest flights from Harlingen to State of Washington

Our best Southwest deals on Harlingen to State of Washington flight tickets

Southwest

Dec 2

HRL12:50 pmHarlingen Valley Intl

11h 30m

2 stops

SEA10:20 pmSeattle/Tacoma Intl

Dec 5

SEA9:55 amSeattle/Tacoma Intl

7h 45m

1 stop

HRL7:40 pmHarlingen Valley Intl

$381

Southwest

Jan 15

HRL3:05 pmHarlingen Valley Intl

7h 05m

1 stop

SEA8:10 pmSeattle/Tacoma Intl

Jan 17

SEA9:10 amSeattle/Tacoma Intl

10h 50m

2 stops

HRL10:00 pmHarlingen Valley Intl

$384

Southwest

Dec 2

HRL12:50 pmHarlingen Valley Intl

11h 30m

2 stops

SEA10:20 pmSeattle/Tacoma Intl

Dec 5

SEA6:45 amSeattle/Tacoma Intl

10h 55m

2 stops

HRL7:40 pmHarlingen Valley Intl

$387

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Wed 1/20

4:35 pm-10:54 pm

1 stop8h 19m

Seattle/Tacoma Intl

Sat 1/23

7:00 am-3:53 pm

1 stop6h 53m

$337

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Thu 11/26

7:10 am-4:26 pm

2 stops11h 16m

Seattle/Tacoma Intl

Thu 12/3

11:59 pm-11:14 am

1 stop9h 15m

$342

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Wed 1/20

7:00 am-1:13 pm

1 stop8h 13m

Seattle/Tacoma Intl

Sat 1/23

8:56 am-9:50 pm

2 stops10h 54m

$342

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Wed 1/20

9:20 am-6:49 pm

2 stops11h 29m

Seattle/Tacoma Intl

Sat 1/23

8:30 am-9:50 pm

2 stops11h 20m

$347

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Wed 12/2

12:50 pm-10:20 pm

2 stops11h 30m

Seattle/Tacoma Intl

Sat 12/5

9:55 am-7:40 pm

1 stop7h 45m

$381

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Fri 1/15

3:05 pm-8:10 pm

1 stop7h 05m

Seattle/Tacoma Intl

Sun 1/17

9:10 am-10:00 pm

2 stops10h 50m

$384

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Wed 12/2

12:50 pm-10:20 pm

2 stops11h 30m

Seattle/Tacoma Intl

Sat 12/5

6:45 am-7:40 pm

2 stops10h 55m

$387

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Wed 12/2

2:24 pm-10:38 pm

1 stop10h 14m

Seattle/Tacoma Intl

Sat 12/5

2:07 pm-11:26 pm

1 stop7h 19m

$411

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Wed 12/2

2:24 pm-10:38 pm

1 stop10h 14m

Seattle/Tacoma Intl

Sun 12/6

2:07 pm-10:54 pm

1 stop6h 47m

$444

HarlingenSeattle

HRL Harlingen Valley Intl - SEA Seattle/Tacoma Intl

HRLSEA

Harlingen Valley Intl

Sat 12/26

7:21 pm-12:59 am

1 stop7h 38m

Seattle/Tacoma Intl

Tue 12/29

11:59 pm-10:04 am

1 stop8h 05m

$647

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 State of Washington

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 State of Washington?

The month of February is, on average, the cheapest month to fly to State of Washington from Harlingen, with most prices found around $263. If you aren’t able to travel to State of Washington during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $288.

Can stopping save me money on Harlingen to State of Washington flights?

You could potentially save up to 39% on your flight if you consider stops on a Harlingen to State of Washington flight.

Cheap Harlingen to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen to State of Washington

Best Price Found	$162
Fastest flight time	7h 14m
Direct flights	None

The best one-way flight to State of Washington from Harlingen in the past 72 hours is $162. The best round-trip flight deal from Harlingen to State of Washington found on momondo in the last 72 hours is $337.

The fastest flight from Harlingen to State of Washington takes 7h 14m

There are no direct flights from Harlingen to State of Washington. There are no popular flight routes from Harlingen to State of Washington.

Search flight deals

Frequently asked questions about flying from Harlingen to Washington

When did momondo last update prices for flights from Harlingen Valley Intl Airport to Washington?
Prices for flights from Harlingen Valley Intl Airport to Washington refresh daily.
How many operators does momondo search for flights from Harlingen Valley Intl Airport to Washington?
There are 2 operators available for flights from Harlingen Valley Intl Airport to Washington as of October 2026.
How old do you have to be to fly from Harlingen Valley Intl Airport to Washington?
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 Washington.
What documentation or ID do you need to fly to Washington?
The necessary travel and health documents for your Washington 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 State of Washington

Compare and see reviews for airlines that fly from Harlingen to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $215	Free Cancellation	Rating 7.0 12,222 reviews		Search American Airlines flights
Southwest	PriceFrom $297	Free Cancellation	Rating 7.9 4,222 reviews		Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to Washington?

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 for you.

Can I find flights from Harlingen to Washington with flexible booking policies on momondo?

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

How can momondo help me find flights from Harlingen to Washington?

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.

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

If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from Harlingen and alert you when they change.