Southwest® flights from Long Island/Islip MacArthur to San Antonio from $210

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Low fares from Long Island/Islip MacArthur to San Antonio

$

Long Island/Islip MacArthur (ISP)to

San Antonio (SAT)
Depart: 10/21/2026

One-way

Basic

From
$210
Seen: 16 hrs ago

Long Island/Islip MacArthur (ISP)to

San Antonio (SAT)
Depart: 11/19/2026

One-way

Basic

From
$227
Seen: 7 hrs ago

Long Island/Islip MacArthur (ISP)to

San Antonio (SAT)
Depart: 10/22/2026

One-way

Basic

From
$227
Seen: 2 hrs ago

Long Island/Islip MacArthur (ISP)to

San Antonio (SAT)
Depart: 11/20/2026

One-way

Basic

From
$249
Seen: 14 hrs ago

Long Island/Islip MacArthur (ISP)to

San Antonio (SAT)
Depart: 10/21/2026

One-way

Choice

From
$260
Seen: 16 hrs ago

Long Island/Islip MacArthur (ISP)to

San Antonio (SAT)
Depart: 10/22/2026

One-way

Choice

From
$277
Seen: 2 hrs ago

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Explore flights from Long Island/Islip MacArthur to San Antonio

Oct 2026
From$210*
Seen: 16 hrs ago
One Way/Basic
Nov 2026
From$227*
Seen: 7 hrs ago
One Way/Basic
Dec 2026
From$305*
Seen: 20 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $210
Displaying fares for October-2026
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  • ISP–SAT, 10/04/2026: From $599
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  • ISP–SAT, 10/16/2026: From $309
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  • ISP–SAT, 10/21/2026: From $210
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  • ISP–SAT, 10/22/2026: From $227
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    • Range$210-$599

    *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:
    Long Island MacArthur Airport
    Arriving at:
    San Antonio International Airport
    Distance:
    1624 miles

    Route Information

    63† 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 63 weekly flights from Long Island/Islip MacArthur to San Antonio on Southwest Airlines.
    To find the lowest fares by day and time to fly Long Island/Islip MacArthur 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 Long Island/Islip MacArthur 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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