Southwest® flights from San Antonio to Long Island/Islip MacArthur from $185

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Low fares from San Antonio to Long Island/Islip MacArthur

$

San Antonio (SAT)to

Long Island/Islip MacArthur (ISP)
Depart: 11/02/2026

One-way

Basic

From
$185
Seen: 3 hrs ago

San Antonio (SAT)to

Long Island/Islip MacArthur (ISP)
Depart: 11/03/2026

One-way

Basic

From
$185
Seen: 17 hrs ago

San Antonio (SAT)to

Long Island/Islip MacArthur (ISP)
Depart: 11/07/2026

One-way

Basic

From
$185
Seen: 9 hrs ago

San Antonio (SAT)to

Long Island/Islip MacArthur (ISP)
Depart: 11/05/2026

One-way

Basic

From
$190
Seen: 18 hrs ago

San Antonio (SAT)to

Long Island/Islip MacArthur (ISP)
Depart: 12/10/2026

One-way

Basic

From
$190
Seen: 14 hrs ago

San Antonio (SAT)to

Long Island/Islip MacArthur (ISP)
Depart: 10/16/2026

One-way

Basic

From
$195
Seen: 15 hrs ago

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Explore flights from San Antonio to Long Island/Islip MacArthur

Sep 2026
From$299*
Seen: 9 hrs ago
One Way/Basic
Oct 2026
From$195*
Seen: 15 hrs ago
One Way/Basic
Nov 2026
From$185*
Seen: 9 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $275
cmp-daily-histogram-bars-legend-max-price-aria-label $589
Displaying fares for September-2026
  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

    SEP

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    12

    Sat

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    13

    Sun

  • SAT–ISP, 09/14/2026: From $589
    14

    Mon

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    15

    Tue

  • SAT–ISP, 09/16/2026: From $589
    16

    Wed

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    17

    Thu

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    18

    Fri

  • SAT–ISP, 09/19/2026: From $504
    19

    Sat

  • SAT–ISP, 09/20/2026: From $494
    20

    Sun

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    21

    Mon

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    22

    Tue

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

    Wed

  • SAT–ISP, 09/24/2026: From $359
    24

    Thu

  • SAT–ISP, 09/25/2026: From $331
    25

    Fri

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    26

    Sat

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

    Sun

  • SAT–ISP, 09/28/2026: From $299
    28

    Mon

  • SAT–ISP, 09/29/2026: From $299
    29

    Tue

  • SAT–ISP, 09/30/2026: From $299
    30

    Wed

  • SAT–ISP, 10/01/2026: From $275
    01

    Thu

    OCT

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    02

    Fri

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    03

    Sat

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    04

    Sun

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    05

    Mon

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    06

    Tue

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    07

    Wed

  • SAT–ISP, 10/08/2026: From $280
    08

    Thu

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    09

    Fri

  • SAT–ISP: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

    • Range$275-$589

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

    Route Information

    62† 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 62 weekly flights from San Antonio to Long Island/Islip MacArthur on Southwest Airlines.
    To find the lowest fares by day and time to fly San Antonio to Long Island/Islip MacArthur with Southwest, check out our Low Fare Calendar.
    You can rent a car at Long Island MacArthur Airport book yours with your flight.
    Yes! Flights from San Antonio to Long Island/Islip MacArthur—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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