Southwest® flights from Harlingen/South Padre Island to San Antonio from $112

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Low fares from Harlingen/South Padre Island to San Antonio

$

Harlingen/South Padre Island (HRL)to

San Antonio (SAT)
Depart: 09/15/2026

One-way

Basic

From
$112
Seen: 6 hrs ago

Harlingen/South Padre Island (HRL)to

San Antonio (SAT)
Depart: 10/14/2026

One-way

Basic

From
$112
Seen: 2 hrs ago

Harlingen/South Padre Island (HRL)to

San Antonio (SAT)
Depart: 09/16/2026

One-way

Basic

From
$129
Seen: 23 hrs ago

Harlingen/South Padre Island (HRL)to

San Antonio (SAT)
Depart: 09/10/2026

One-way

Basic

From
$129
Seen: 12 hrs ago

Harlingen/South Padre Island (HRL)to

San Antonio (SAT)
Depart: 09/14/2026

One-way

Basic

From
$135
Seen: 6 hrs ago

Harlingen/South Padre Island (HRL)to

San Antonio (SAT)
Depart: 09/17/2026

One-way

Basic

From
$135
Seen: 3 hrs ago

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Explore flights from Harlingen/South Padre Island to San Antonio

Aug 2026
From$170*
Seen: 9 hrs ago
One Way/Basic
Sep 2026
From$112*
Seen: 6 hrs ago
One Way/Basic
Oct 2026
From$112*
Seen: 2 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $112
cmp-daily-histogram-bars-legend-max-price-aria-label $211
Displaying fares for August-2026
  • HRL–SAT, 08/21/2026: From $211
    21

    Fri

    AUG

  • HRL–SAT, 08/22/2026: From $179
    22

    Sat

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • HRL–SAT, 08/24/2026: From $180
    24

    Mon

  • HRL–SAT, 08/25/2026: From $179
    25

    Tue

  • HRL–SAT, 08/26/2026: From $179
    26

    Wed

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    27

    Thu

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    28

    Fri

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    29

    Sat

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    30

    Sun

  • HRL–SAT, 08/31/2026: From $170
    31

    Mon

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

  • HRL–SAT, 09/02/2026: From $170
    02

    Wed

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    03

    Thu

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    04

    Fri

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    05

    Sat

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    06

    Sun

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • HRL–SAT, 09/08/2026: From $170
    08

    Tue

  • HRL–SAT, 09/09/2026: From $136
    09

    Wed

  • HRL–SAT, 09/10/2026: From $129
    10

    Thu

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

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    13

    Sun

  • HRL–SAT, 09/14/2026: From $135
    14

    Mon

  • HRL–SAT, 09/15/2026: From $112
    15

    Tue

  • HRL–SAT, 09/16/2026: From $129
    16

    Wed

  • HRL–SAT, 09/17/2026: From $135
    17

    Thu

  • HRL–SAT, 09/18/2026: From $145
    18

    Fri

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

  • HRL–SAT: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

    • Range$112-$211

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Valley International Airport
    Arriving at:
    San Antonio International Airport
    Distance:
    233 miles

    Route Information

    83† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 83 weekly flights from Harlingen/South Padre Island to San Antonio on Southwest Airlines.
    To find the lowest fares by day and time to fly Harlingen/South Padre Island to San Antonio with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Antonio International Airport book yours with your flight.
    Yes! Flights from Harlingen/South Padre Island to San Antonio—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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