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Cheap flights from Washington to Harlingen from $115

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 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.
1 adult
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.
American Airlines Logo
12:59 am - 10:17 am
SEA
-
HRL
7h 18m
1 stop
American Airlines Logo
7:53 pm - 12:44 am
HRL
-
SEA
6h 51m
1 stop
$255American Airlines
Wed, Apr 29 - Thu, May 7
United Airlines Logo
6:30 am - 4:04 pm
SEA
-
HRL
7h 34m
1 stop
United Airlines Logo
5:18 pm - 11:12 pm
HRL
-
SEA
7h 54m
1 stop
$351United Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
8:42 am - 9:59 pm
SEA
-
HRL
11h 17m
2 stops
United Airlines Logo
5:18 pm - 11:12 pm
HRL
-
SEA
7h 54m
1 stop
$356United Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
7:14 pm - 11:23 am
PDX
-
HRL
14h 09m
2 stops
United Airlines Logo
5:18 pm - 10:58 pm
HRL
-
PDX
7h 40m
1 stop
$360United Airlines
Tue, Apr 14 - Sat, Apr 18
United Airlines Logo
8:42 am - 9:59 pm
SEA
-
HRL
11h 17m
2 stops
United Airlines Logo
12:05 pm - 9:46 pm
HRL
-
SEA
11h 41m
2 stops
$361United Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
7:14 pm - 11:23 am
PDX
-
HRL
14h 09m
2 stops
United Airlines Logo
7:00 am - 6:08 pm
HRL
-
PDX
13h 08m
2 stops
$366United Airlines
Tue, Apr 14 - Sat, Apr 18
Southwest Logo
8:25 am - 8:55 pm
SEA
-
HRL
10h 30m
2 stops
Southwest Logo
4:10 pm - 8:55 pm
HRL
-
SEA
6h 45m
1 stop
$368Southwest
Wed, Jun 3 - Sat, Jun 20
United Airlines Logo
7:14 pm - 11:23 am
PDX
-
HRL
14h 09m
2 stops
United Airlines Logo
7:00 am - 6:08 pm
HRL
-
PDX
13h 08m
3 stops
$371United Airlines
Tue, Apr 14 - Sat, Apr 18
Southwest Logo
8:25 am - 8:55 pm
SEA
-
HRL
10h 30m
2 stops
Southwest Logo
5:10 pm - 12:10 am
HRL
-
SEA
9h 00m
2 stops
$373Southwest
Wed, Jun 3 - Sat, Jun 20
American Airlines Logo
5:00 am - 7:33 pm
PSC
-
HRL
12h 33m
2 stops
American Airlines Logo
6:00 am - 7:48 pm
HRL
-
PSC
15h 48m
2 stops
$665American Airlines
Wed, May 13 - Wed, May 20

American Airlines flights from State of Washington to Harlingen, Texas

Our best American Airlines deals on State of Washington to Harlingen, Texas flight tickets
American Airlines
Apr 29
SEA12:59 amSeattle/Tacoma Intl
7h 18m
1 stop
HRL10:17 amHarlingen Valley Intl
May 7
HRL7:53 pmHarlingen Valley Intl
6h 51m
1 stop
SEA12:44 amSeattle/Tacoma Intl
$255
American Airlines
Apr 29
SEA12:59 amSeattle/Tacoma Intl
7h 18m
1 stop
HRL10:17 amHarlingen Valley Intl
May 7
HRL2:51 pmHarlingen Valley Intl
10h 07m
2 stops
SEA10:58 pmSeattle/Tacoma Intl
$404
American Airlines
Apr 7
SEA2:10 pmSeattle/Tacoma Intl
6h 41m
1 stop
HRL10:51 pmHarlingen Valley Intl
Apr 13
HRL7:53 pmHarlingen Valley Intl
6h 51m
1 stop
SEA12:44 amSeattle/Tacoma Intl
$499

United Airlines flights from State of Washington to Harlingen, Texas

Our best United Airlines deals on State of Washington to Harlingen, Texas flight tickets
United Airlines
Apr 25
SEA6:30 amSeattle/Tacoma Intl
7h 34m
1 stop
HRL4:04 pmHarlingen Valley Intl
Apr 29
HRL5:18 pmHarlingen Valley Intl
7h 54m
1 stop
SEA11:12 pmSeattle/Tacoma Intl
$351
United Airlines
Apr 25
SEA8:42 amSeattle/Tacoma Intl
11h 17m
2 stops
HRL9:59 pmHarlingen Valley Intl
Apr 29
HRL5:18 pmHarlingen Valley Intl
7h 54m
1 stop
SEA11:12 pmSeattle/Tacoma Intl
$356
United Airlines
Apr 14
PDX7:14 pmPortland
14h 09m
2 stops
HRL11:23 amHarlingen Valley Intl
Apr 18
HRL5:18 pmHarlingen Valley Intl
7h 40m
1 stop
PDX10:58 pmPortland
$360

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Harlingen, Texas 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 March 24, 2026.
Use the filters below to find and compare flights from Washington to Harlingen, Texas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Wed 4/29

12:59 am-10:17 am

1 stop7h 18m

Harlingen Valley Intl

Thu 5/7

7:53 pm-12:44 am

1 stop6h 51m

$255

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 4/25

6:30 am-4:04 pm

1 stop7h 34m

Harlingen Valley Intl

Wed 4/29

5:18 pm-11:12 pm

1 stop7h 54m

$351

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 4/25

8:42 am-9:59 pm

2 stops11h 17m

Harlingen Valley Intl

Wed 4/29

5:18 pm-11:12 pm

1 stop7h 54m

$356

PortlandHarlingen

PDX - HRL

PDXHRL

Portland

Tue 4/14

7:14 pm-11:23 am

2 stops14h 09m

Harlingen Valley Intl

Sat 4/18

5:18 pm-10:58 pm

1 stop7h 40m

$360

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 4/25

8:42 am-9:59 pm

2 stops11h 17m

Harlingen Valley Intl

Wed 4/29

12:05 pm-9:46 pm

2 stops11h 41m

$361

PortlandHarlingen

PDX - HRL

PDXHRL

Portland

Tue 4/14

7:14 pm-11:23 am

2 stops14h 09m

Harlingen Valley Intl

Sat 4/18

7:00 am-6:08 pm

2 stops13h 08m

$366

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Wed 6/3

8:25 am-8:55 pm

2 stops10h 30m

Harlingen Valley Intl

Sat 6/20

4:10 pm-8:55 pm

1 stop6h 45m

$368

PortlandHarlingen

PDX - HRL

PDXHRL

Portland

Tue 4/14

7:14 pm-11:23 am

2 stops14h 09m

Harlingen Valley Intl

Sat 4/18

7:00 am-6:08 pm

3 stops13h 08m

$371

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Wed 6/3

8:25 am-8:55 pm

2 stops10h 30m

Harlingen Valley Intl

Sat 6/20

5:10 pm-12:10 am

2 stops9h 00m

$373

PascoHarlingen

PSC - HRL

PSCHRL

Pasco Tri Cities

Wed 5/13

5:00 am-7:33 pm

2 stops12h 33m

Harlingen Valley Intl

Wed 5/20

6:00 am-7:48 pm

2 stops15h 48m

$665

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Harlingen from

How to get the cheapest flight ticket from State of Washington to Harlingen, Texas

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

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

You could potentially save up to 47% on your flight if you consider stops on a State of Washington to Harlingen, Texas flight.

Cheap State of Washington to Harlingen, Texas flight deals and tips

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

Fastest flight time

7h 19m

Direct flights

None
The fastest flight from State of Washington to Harlingen, Texas takes 7h 19m
There are no direct flights from State of Washington to Harlingen, Texas. There are no popular flight routes from State of Washington to Harlingen, Texas.
Search flight deals

  • 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, Texas

Compare and see reviews for airlines that fly from State of Washington to Harlingen, Texas with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $237Free CancellationRating
7.1
11,492 reviews
Search American Airlines flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
9,469 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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