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Harlingen

$104+ Cheap flights from Washington to Harlingen, TX (HRL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HRL
Feb 21 — Feb 281
Sat 2/21
Sat 2/28
1 adult, Economy
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Cheap flight deals from Washington to Harlingen

Cheapest flights from Washington to Harlingen
Explore the most affordable flight options available from Washington to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 22, 2026.

This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:20 am
SEA
-
HRL
2 stops11h 20m
United Airlines
Tue 4/712:05 pm
HRL
-
SEA
1 stop9h 37m
United Airlines
Deal found 1/21$242
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1111:55 pm
SEA
-
HRL
1 stop8h 22m
American Airlines
Fri 4/177:53 pm
HRL
-
SEA
1 stop6h 51m
American Airlines
Deal found 1/21$300
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:35 am
SEA
-
HRL
1 stop8h 39m
American Airlines
Mon 2/96:44 pm
HRL
-
SEA
1 stop7h 07m
American Airlines
Deal found 1/21$359
This American Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:40 pm
PDX
-
HRL
1 stop8h 32m
American Airlines
Fri 3/66:00 am
HRL
-
PDX
1 stop7h 07m
American Airlines
Deal found 1/22$394
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2512:59 pm
PDX
-
HRL
1 stop7h 00m
United Airlines
Mon 1/265:25 pm
HRL
-
PDX
1 stop7h 28m
United Airlines
Deal found 1/21$399
This Southwest deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:40 am
SEA
-
HRL
2 stops11h 15m
Southwest
Fri 4/176:00 pm
HRL
-
SEA
2 stops8h 40m
Southwest
Deal found 1/21$400
This Southwest deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2512:00 pm
PDX
-
HRL
2 stops8h 15m
Southwest
Mon 1/266:30 am
HRL
-
PDX
2 stops9h 05m
Southwest
Deal found 1/21$409
This American Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2711:40 pm
PDX
-
HRL
1 stop8h 32m
American Airlines
Fri 3/66:00 am
HRL
-
PDX
1 stop7h 07m
American Airlines
Deal found 1/22$415
This United Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2712:59 pm
PDX
-
HRL
1 stop7h 00m
United Airlines
Sat 1/3112:10 pm
HRL
-
PDX
2 stops12h 56m
United Airlines
Deal found 1/19$443
This United Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/312:57 pm
SEA
-
HRL
1 stop7h 02m
United Airlines
Sat 2/75:25 pm
HRL
-
SEA
1 stop7h 36m
United Airlines
Deal found 1/19$449
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/246:00 am
SEA
-
HRL
1 stop6h 52m
American Airlines
Tue 1/276:02 am
HRL
-
SEA
1 stop9h 02m
American Airlines
Deal found 1/21$470
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/86:05 am
PDX
-
HRL
2 stops9h 55m
Southwest
Fri 3/135:30 pm
HRL
-
PDX
2 stops9h 25m
Southwest
Deal found 1/20$509

Find flight deals from Washington to Harlingen

Keep the following information in mind while searching for Washington to Harlingen flight deals. Data was last updated January 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$242
(United Airlines)

One-way from

$104
(American Airlines)

Popular in

December

Cheapest in

March

Average price

$341
Provider with most accurate pricing for Seattle/Tacoma Intl-Harlingen Valley Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Harlingen Valley Intl flights.
Search Deals
From Washington to Harlingen Valley Intl
Search Deals
One-way flight from Washington to Harlingen Valley Intl
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Harlingen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 22, 2026.
Use the filters below to find and compare flights from Washington to Harlingen that are best for you.

Fly from

Washington

Fly to

Harlingen

Route

Depart

Return

Price

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Tue 3/31

6:20 am-7:40 pm

2 stops11h 20m

Harlingen Valley Intl

Tue 4/7

12:05 pm-7:42 pm

1 stop9h 37m

$242

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Thu 2/5

6:00 am-6:14 pm

2 stops10h 14m

Harlingen Valley Intl

Mon 2/9

6:44 pm-11:51 pm

1 stop7h 07m

$364

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Thu 4/2

5:30 am-4:55 pm

2 stops9h 25m

Harlingen Valley Intl

Mon 4/6

6:50 am-3:05 pm

2 stops10h 15m

$364

PortlandHarlingen

PDX - HRL

PDXHRL

Portland

Sat 2/28

11:40 pm-10:12 am

1 stop8h 32m

Harlingen Valley Intl

Fri 3/6

6:00 am-11:07 am

1 stop7h 07m

$394

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 4/11

6:40 am-7:55 pm

2 stops11h 15m

Harlingen Valley Intl

Fri 4/17

6:00 pm-12:40 am

2 stops8h 40m

$400

PortlandHarlingen

PDX - HRL

PDXHRL

Portland

Fri 2/27

11:40 pm-10:12 am

1 stop8h 32m

Harlingen Valley Intl

Fri 3/6

6:00 am-11:07 am

1 stop7h 07m

$415

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Tue 2/3

12:57 pm-9:59 pm

1 stop7h 02m

Harlingen Valley Intl

Sat 2/7

5:25 pm-11:01 pm

1 stop7h 36m

$449

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Wed 4/1

12:59 am-10:12 am

1 stop7h 13m

Harlingen Valley Intl

Mon 4/6

8:06 pm-12:55 am

1 stop6h 49m

$449

PortlandHarlingen

PDX - HRL

PDXHRL

Portland

Sun 3/8

6:05 am-6:00 pm

2 stops9h 55m

Harlingen Valley Intl

Fri 3/13

5:30 pm-12:55 am

2 stops9h 25m

$509

PortlandHarlingen

PDX - HRL

PDXHRL

Portland

Fri 2/27

12:57 pm-9:59 pm

1 stop7h 02m

Harlingen Valley Intl

Fri 3/6

5:25 pm-7:14 pm

2 stops27h 49m

$547

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 13 results
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Best time to book a flight from Washington to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Harlingen

What is the cheapest month to book a flight from State of Washington to Harlingen, Texas?

Currently, March is the cheapest month in which you can book a flight from State of Washington to Harlingen, Texas (average of $191). Flying from State of Washington to Harlingen, Texas in July is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Washington to Harlingen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Harlingen from Washington?

    For a flight from Washington to Harlingen, you will be flying into Valley Intl. Harlingen Valley Intl (HRL) is just 3.7 mi from the center of the city.

  • How long is the flight from State of Washington to Harlingen, Texas?

    For as low as $364, United Airlines can have you in Harlingen, Texas from State of Washington in 9h 25m. Airlines will cover a distance of 1984 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from State of Washington to Harlingen, Texas?

    Most travelers choose Seattle/Tacoma Intl - Harlingen Valley Intl, Portland - Harlingen Valley Intl or Pasco Tri Cities - Harlingen Valley Intl when deciding on the best route from State of Washington to Harlingen, Texas.

  • Can I find deals for flights from Washington to Harlingen that include hotel bookings?

    Yes. In addition to deals on Washington to Harlingen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Harlingen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Harlingen.

  • Can I find deals for business class flights from Washington to Harlingen?

    Yes. Cheapflights offers flight deals from Washington to Harlingen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Harlingen, Texas?

    Currently, March is the cheapest month in which you can book a flight from State of Washington to Harlingen, Texas (average of $191). Flying from State of Washington to Harlingen, Texas in July is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington to Harlingen

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Washington to Harlingen

Discover the top 2 airlines that operate flights from Washington to Harlingen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$225Average$666FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$246Average$504FlexibilityNo cancel feeOn-time69%

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