Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Harlingen from $95

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Harlingen departing on 3/4. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:12 pm - 10:36 am
SEA
-
HRL
9h 24m1 stop
American Airlines Logo
6:44 pm - 11:51 pm
HRL
-
SEA
7h 07m1 stop
$263American Airlines
Sun, Jan 18 - Sun, Jan 25
United Airlines Logo
6:18 am - 8:01 pm
SEA
-
HRL
11h 43m2 stops
United Airlines Logo
5:25 pm - 10:59 pm
HRL
-
SEA
7h 34m1 stop
$295United Airlines
Sun, Jan 18 - Sun, Jan 25
American Airlines Logo
5:23 am - 2:18 pm
SEA
-
HRL
6h 55m1 stop
American Airlines Logo
6:44 pm - 11:51 pm
HRL
-
SEA
7h 07m1 stop
$305American Airlines
Thu, Jan 1 - Thu, Jan 8
American Airlines Logo
10:00 am - 11:21 pm
SEA
-
HRL
11h 21m2 stops
American Airlines Logo
6:02 am - 11:01 am
HRL
-
SEA
6h 59m1 stop
$314American Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
12:40 pm - 9:59 pm
SEA
-
HRL
7h 19m1 stop
United Airlines Logo
5:25 pm - 10:59 pm
HRL
-
SEA
7h 34m1 stop
$327United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
6:48 am - 4:06 pm
SEA
-
HRL
7h 18m1 stop
United Airlines Logo
12:10 pm - 9:12 pm
HRL
-
SEA
11h 02m2 stops
$332United Airlines
Sat, Jan 31 - Tue, Feb 3
American Airlines Logo
5:23 am - 2:18 pm
SEA
-
HRL
6h 55m1 stop
American Airlines Logo
6:44 pm - 11:51 pm
HRL
-
SEA
7h 07m1 stop
$333American Airlines
Thu, Jan 1 - Thu, Jan 8
United Airlines Logo
8:40 am - 9:59 pm
SEA
-
HRL
11h 19m2 stops
United Airlines Logo
12:10 pm - 12:59 am
HRL
-
SEA
14h 49m2 stops
$337United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
5:00 am - 4:06 pm
SEA
-
HRL
9h 06m1 stop
United Airlines Logo
9:20 am - 6:27 pm
HRL
-
SEA
11h 07m2 stops
$338United Airlines
Thu, Jan 1 - Thu, Jan 8
United Airlines Logo
9:00 am - 9:59 pm
SEA
-
HRL
10h 59m2 stops
United Airlines Logo
9:20 am - 9:12 pm
HRL
-
SEA
13h 52m3 stops
$342United Airlines
Sat, Jan 31 - Tue, Feb 3

American Airlines flights from Seattle to Harlingen, Texas

Our best American Airlines deals on Seattle to Harlingen, Texas flight tickets
American Airlines
Jan 18
SEA11:12 pmSeattle/Tacoma Intl
9h 24m
1 stop
HRL10:36 amHarlingen Valley Intl
Jan 25
HRL6:44 pmHarlingen Valley Intl
7h 07m
1 stop
SEA11:51 pmSeattle/Tacoma Intl
$263
Find similar
American Airlines
Jan 1
SEA5:23 amSeattle/Tacoma Intl
6h 55m
1 stop
HRL2:18 pmHarlingen Valley Intl
Jan 8
HRL6:44 pmHarlingen Valley Intl
7h 07m
1 stop
SEA11:51 pmSeattle/Tacoma Intl
$305
Find similar
American Airlines
Jan 31
SEA10:00 amSeattle/Tacoma Intl
11h 21m
2 stops
HRL11:21 pmHarlingen Valley Intl
Feb 3
HRL6:02 amHarlingen Valley Intl
6h 59m
1 stop
SEA11:01 amSeattle/Tacoma Intl
$314
Find similar

United Airlines flights from Seattle to Harlingen, Texas

Our best United Airlines deals on Seattle to Harlingen, Texas flight tickets
United Airlines
Jan 18
SEA6:18 amSeattle/Tacoma Intl
11h 43m
2 stops
HRL8:01 pmHarlingen Valley Intl
Jan 25
HRL5:25 pmHarlingen Valley Intl
7h 34m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
$295
Find similar
United Airlines
Jan 31
SEA12:40 pmSeattle/Tacoma Intl
7h 19m
1 stop
HRL9:59 pmHarlingen Valley Intl
Feb 3
HRL5:25 pmHarlingen Valley Intl
7h 34m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
$327
Find similar
United Airlines
Jan 31
SEA6:48 amSeattle/Tacoma Intl
7h 18m
1 stop
HRL4:06 pmHarlingen Valley Intl
Feb 3
HRL12:10 pmHarlingen Valley Intl
11h 02m
2 stops
SEA9:12 pmSeattle/Tacoma Intl
$332
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle 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 December 4, 2025.
Use the filters below to find and compare flights from Seattle to Harlingen, Texas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sun 1/18

11:12 pm-10:36 am

1 stop9h 24m

Harlingen Valley Intl

Sun 1/25

6:44 pm-11:51 pm

1 stop7h 07m

$263

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sun 1/18

6:18 am-8:01 pm

2 stops11h 43m

Harlingen Valley Intl

Sun 1/25

5:25 pm-10:59 pm

1 stop7h 34m

$295

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Thu 1/1

5:23 am-2:18 pm

1 stop6h 55m

Harlingen Valley Intl

Thu 1/8

6:44 pm-11:51 pm

1 stop7h 07m

$305

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 1/31

10:00 am-11:21 pm

2 stops11h 21m

Harlingen Valley Intl

Tue 2/3

6:02 am-11:01 am

1 stop6h 59m

$314

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 1/31

12:40 pm-9:59 pm

1 stop7h 19m

Harlingen Valley Intl

Tue 2/3

5:25 pm-10:59 pm

1 stop7h 34m

$327

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 1/31

6:48 am-4:06 pm

1 stop7h 18m

Harlingen Valley Intl

Tue 2/3

12:10 pm-9:12 pm

2 stops11h 02m

$332

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Thu 1/1

5:23 am-2:18 pm

1 stop6h 55m

Harlingen Valley Intl

Thu 1/8

6:44 pm-11:51 pm

1 stop7h 07m

$333

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 1/31

8:40 am-9:59 pm

2 stops11h 19m

Harlingen Valley Intl

Tue 2/3

12:10 pm-12:59 am

2 stops14h 49m

$337

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Thu 1/1

5:00 am-4:06 pm

1 stop9h 06m

Harlingen Valley Intl

Thu 1/8

9:20 am-6:27 pm

2 stops11h 07m

$338

SeattleHarlingen

SEA - HRL

SEAHRL

Seattle/Tacoma Intl

Sat 1/31

9:00 am-9:59 pm

2 stops10h 59m

Harlingen Valley Intl

Tue 2/3

9:20 am-9:12 pm

3 stops13h 52m

$342

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

See travel insights to Harlingen from

How to get the cheapest flight ticket from Seattle 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

What is the cheapest day to depart on your flight to Harlingen, Texas?

The cheapest day to depart on your flight to Harlingen, Texas is on a Thursday when prices can be found for as low as $402. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Harlingen, Texas for around $873.

What is the cheapest time of day to depart on your flight to Harlingen, Texas?

Our most recent data shows that the best time of day to fly to Harlingen, Texas is at noon. Flights from Seattle to Harlingen, Texas during this time can be as low as $364. Flights in the afternoon are often more expensive with an average ticket price of $636.

Can stopping save me money on Seattle to Harlingen, Texas flights?

You could potentially save up to 7% on your flight if you consider stops on a Seattle to Harlingen, Texas flight.

When to book flights from Seattle to Harlingen, Texas

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Harlingen, Texas according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Harlingen, Texas (SEA to HRL) flight deals and tips

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

Fastest flight time

5h 57m

Direct flights

None
The fastest flight from Seattle to Harlingen, Texas takes 5h 57m
There are no direct flights from Seattle to Harlingen, Texas. There are no popular flight routes from Seattle to Harlingen, Texas.
Search flight deals

  • How far is Seattle/Tacoma Intl to Harlingen Valley Intl by plane?

    Harlingen Valley Intl is 1992.5 mi away from Seattle/Tacoma Intl. By plane, this route typically takes 6h 15m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Harlingen Valley Intl Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Harlingen Valley Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Harlingen Valley Intl Airport.

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

    The travel and health documents required for your trip to Harlingen Valley Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Harlingen Valley Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Harlingen, Texas?

Best airlines flying from Seattle to Harlingen, Texas

Compare and see reviews for airlines that fly from Seattle to Harlingen, Texas with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $225Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights

Why use momondo?

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

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

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

Yes. All flights to Harlingen from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Harlingen from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Seattle to Harlingen flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Harlingen, Texas 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
Sat 1/3
Sat 1/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States