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Cheap flights from Washington to Harlingen from $129

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 to Harlingen departing on 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:10 pm - 9:52 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
7h 42m1 stop Houston George Bush Intcntl
United Airlines Logo
1:59 pm - 7:08 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
7h 09m1 stop Houston George Bush Intcntl
$235United Airlines
Thu, Sep 10 - Wed, Sep 16
United Airlines Logo
6:32 am - 7:39 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
11h 07m2 stops Los Angeles Houston George Bush Intcntl
United Airlines Logo
1:59 pm - 7:08 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
7h 09m1 stop Houston George Bush Intcntl
$240United Airlines
Thu, Sep 10 - Wed, Sep 16
United Airlines Logo
7:10 am - 3:59 pmPDX  Portland-HRL Harlingen Valley Intl
6h 49m1 stop Houston George Bush Intcntl
United Airlines Logo
5:05 am - 2:41 pmHRL  Harlingen Valley Intl-PDX Portland
11h 36m2 stops Houston George Bush Intcntl San Francisco
$305United Airlines
Sun, Sep 6 - Sat, Sep 12
United Airlines Logo
5:00 am - 3:59 pmPDX  Portland-HRL Harlingen Valley Intl
8h 59m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
1:59 pm - 9:05 pmHRL  Harlingen Valley Intl-PDX Portland
9h 06m2 stops Houston George Bush Intcntl Denver Intl
$346United Airlines
Sun, Sep 6 - Sat, Sep 12
Southwest Logo
6:15 am - 4:05 pmSEA  Seattle/Tacoma Intl-HRL Harlingen Valley Intl
7h 50m2 stops Phoenix Sky Harbor Intl Austin Bergstrom
Southwest Logo
4:25 pm - 11:10 pmHRL  Harlingen Valley Intl-SEA Seattle/Tacoma Intl
8h 45m2 stops Houston Hobby Denver Intl
$363Southwest
Thu, Sep 10 - Wed, Sep 16
American Airlines Logo
6:00 am - 3:05 pmPDX  Portland-HRL Harlingen Valley Intl
7h 05m1 stop Dallas/Fort Worth
American Airlines Logo
5:51 am - 10:59 amHRL  Harlingen Valley Intl-PDX Portland
7h 08m1 stop Dallas/Fort Worth
$377American Airlines
Fri, Sep 11 - Sun, Sep 13
American Airlines Logo
2:07 pm - 10:48 pmPDX  Portland-HRL Harlingen Valley Intl
6h 41m1 stop Dallas/Fort Worth
American Airlines Logo
5:51 am - 10:59 amHRL  Harlingen Valley Intl-PDX Portland
7h 08m1 stop Dallas/Fort Worth
$377American Airlines
Fri, Sep 11 - Sun, Sep 13
American Airlines Logo
6:00 am - 4:58 pmPDX  Portland-HRL Harlingen Valley Intl
8h 58m1 stop Dallas/Fort Worth
American Airlines Logo
4:53 pm - 11:23 pmHRL  Harlingen Valley Intl-PDX Portland
8h 30m1 stop Dallas/Fort Worth
$383American Airlines
Fri, Sep 18 - Sun, Sep 20
Southwest Logo
5:45 am - 4:05 pmPDX  Portland-HRL Harlingen Valley Intl
8h 20m2 stops Phoenix Sky Harbor Intl Austin Bergstrom
Southwest Logo
1:45 pm - 9:55 pmHRL  Harlingen Valley Intl-PDX Portland
10h 10m2 stops Austin Bergstrom Las Vegas Harry Reid Intl
$391Southwest
Fri, Aug 21 - Tue, Aug 25
Southwest Logo
6:20 am - 5:05 pmPDX  Portland-HRL Harlingen Valley Intl
8h 45m2 stops Phoenix Sky Harbor Intl Dallas Love Field
Southwest Logo
7:40 am - 2:10 pmHRL  Harlingen Valley Intl-PDX Portland
8h 30m2 stops Austin Bergstrom Phoenix Sky Harbor Intl
$398Southwest
Fri, Jan 22 - Sun, Jan 24

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United Airlines flights from State of Washington to Harlingen

Our best United Airlines deals on State of Washington to Harlingen flight tickets
United Airlines
Sep 10
SEA12:10 pmSeattle/Tacoma Intl
7h 42m
1 stop
HRL9:52 pmHarlingen Valley Intl
Sep 16
HRL1:59 pmHarlingen Valley Intl
7h 09m
1 stop
SEA7:08 pmSeattle/Tacoma Intl
$235
United Airlines
Sep 10
SEA6:32 amSeattle/Tacoma Intl
11h 07m
2 stops
HRL7:39 pmHarlingen Valley Intl
Sep 16
HRL1:59 pmHarlingen Valley Intl
7h 09m
1 stop
SEA7:08 pmSeattle/Tacoma Intl
$240
United Airlines
Sep 6
PDX7:10 amPortland
6h 49m
1 stop
HRL3:59 pmHarlingen Valley Intl
Sep 12
HRL5:05 amHarlingen Valley Intl
11h 36m
2 stops
PDX2:41 pmPortland
$305

American Airlines flights from State of Washington to Harlingen

Our best American Airlines deals on State of Washington to Harlingen flight tickets
American Airlines
Sep 11
PDX6:00 amPortland
7h 05m
1 stop
HRL3:05 pmHarlingen Valley Intl
Sep 13
HRL5:51 amHarlingen Valley Intl
7h 08m
1 stop
PDX10:59 amPortland
$377
American Airlines
Sep 18
PDX6:00 amPortland
8h 58m
1 stop
HRL4:58 pmHarlingen Valley Intl
Sep 20
HRL4:53 pmHarlingen Valley Intl
8h 30m
1 stop
PDX11:23 pmPortland
$383
American Airlines
Aug 27
SEA5:00 amSeattle/Tacoma Intl
9h 27m
1 stop
HRL4:27 pmHarlingen Valley Intl
Aug 30
HRL8:03 pmHarlingen Valley Intl
6h 47m
1 stop
SEA12:50 amSeattle/Tacoma Intl
$429

momondo Fare Finder

 
Customize your flight search to find flights from State of 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, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Washington to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHarlingen

SEA Seattle/Tacoma Intl - HRL Harlingen Valley Intl

SEAHRL

Seattle/Tacoma Intl

Thu 9/10

12:10 pm-9:52 pm

1 stop7h 42m

Harlingen Valley Intl

Wed 9/16

1:59 pm-7:08 pm

1 stop7h 09m

$235

SeattleHarlingen

SEA Seattle/Tacoma Intl - HRL Harlingen Valley Intl

SEAHRL

Seattle/Tacoma Intl

Thu 9/10

6:32 am-7:39 pm

2 stops11h 07m

Harlingen Valley Intl

Wed 9/16

1:59 pm-7:08 pm

1 stop7h 09m

$240

PortlandHarlingen

PDX Portland - HRL Harlingen Valley Intl

PDXHRL

Portland

Sun 9/6

7:10 am-3:59 pm

1 stop6h 49m

Harlingen Valley Intl

Sat 9/12

5:05 am-2:41 pm

2 stops11h 36m

$305

PortlandHarlingen

PDX Portland - HRL Harlingen Valley Intl

PDXHRL

Portland

Sun 9/6

5:00 am-3:59 pm

2 stops8h 59m

Harlingen Valley Intl

Sat 9/12

1:59 pm-9:05 pm

2 stops9h 06m

$346

SeattleHarlingen

SEA Seattle/Tacoma Intl - HRL Harlingen Valley Intl

SEAHRL

Seattle/Tacoma Intl

Thu 9/10

6:15 am-4:05 pm

2 stops7h 50m

Harlingen Valley Intl

Wed 9/16

4:25 pm-11:10 pm

2 stops8h 45m

$363

PortlandHarlingen

PDX Portland - HRL Harlingen Valley Intl

PDXHRL

Portland

Fri 9/11

6:00 am-3:05 pm

1 stop7h 05m

Harlingen Valley Intl

Sun 9/13

5:51 am-10:59 am

1 stop7h 08m

$377
Quickest round-trip

PortlandHarlingen

PDX Portland - HRL Harlingen Valley Intl

PDXHRL

Portland

Fri 9/11

2:07 pm-10:48 pm

1 stop6h 41m

Harlingen Valley Intl

Sun 9/13

5:51 am-10:59 am

1 stop7h 08m

$377

PortlandHarlingen

PDX Portland - HRL Harlingen Valley Intl

PDXHRL

Portland

Fri 9/18

6:00 am-4:58 pm

1 stop8h 58m

Harlingen Valley Intl

Sun 9/20

4:53 pm-11:23 pm

1 stop8h 30m

$383

PortlandHarlingen

PDX Portland - HRL Harlingen Valley Intl

PDXHRL

Portland

Fri 8/21

5:45 am-4:05 pm

2 stops8h 20m

Harlingen Valley Intl

Tue 8/25

1:45 pm-9:55 pm

2 stops10h 10m

$391

PortlandHarlingen

PDX Portland - HRL Harlingen Valley Intl

PDXHRL

Portland

Fri 1/22

6:20 am-5:05 pm

2 stops8h 45m

Harlingen Valley Intl

Sun 1/24

7:40 am-2:10 pm

2 stops8h 30m

$398

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from State of Washington to Harlingen

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

You could potentially save up to 30% on your flight if you consider stops on a State of Washington to Harlingen flight.

Cheap State of Washington to Harlingen flight deals and tips

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

Fastest flight time

6h 49m

Direct flights

None
The fastest flight from State of Washington to Harlingen takes 6h 49m
There are no direct flights from State of Washington to Harlingen. There are no popular flight routes from State of Washington to Harlingen.
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Frequently asked questions about flying from Washington to Harlingen

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

    Prices for flights from Washington to Harlingen Valley Intl Airport were last updated today.

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

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

    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 Washington to Harlingen Valley Intl Airport.

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

    The necessary travel and health documents for your Harlingen Valley Intl Airport 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 State of Washington to Harlingen

Compare and see reviews for airlines that fly from State of Washington to Harlingen with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $237Free CancellationRating
7.1
11,902 reviews
Search American Airlines flights
United AirlinesPriceFrom $311Free CancellationRating
7.4
10,101 reviews
Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Harlingen from Washington.

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

Flights from Washington to Harlingen with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Washington 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 to Harlingen right now. Can momondo alert me if prices change?

Price alerts on flights to Harlingen from Washington 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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