Southwest® flights from St. Louis to Long Island/Islip MacArthur from $187

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Low fares from St. Louis to Long Island/Islip MacArthur

$

St. Louis (STL)to

Long Island/Islip MacArthur (ISP)
Depart: 01/11/2027

One-way

Basic

From
$187
Seen: 19 hrs ago

St. Louis (STL)to

Long Island/Islip MacArthur (ISP)
Depart: 12/09/2026

One-way

Basic

From
$192
Seen: 11 hrs ago

St. Louis (STL)to

Long Island/Islip MacArthur (ISP)
Depart: 12/15/2026

One-way

Basic

From
$202
Seen: 22 hrs ago

St. Louis (STL)to

Long Island/Islip MacArthur (ISP)
Depart: 12/06/2026

One-way

Basic

From
$202
Seen: 17 hrs ago

St. Louis (STL)to

Long Island/Islip MacArthur (ISP)
Depart: 01/14/2027

One-way

Basic

From
$202
Seen: 11 hrs ago

St. Louis (STL)to

Long Island/Islip MacArthur (ISP)
Depart: 12/08/2026

One-way

Basic

From
$202
Seen: 9 hrs ago

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Explore flights from St. Louis to Long Island/Islip MacArthur

Nov 2026
From$241*
Seen: 1 hour ago
One Way/Basic
Dec 2026
From$192*
Seen: 11 hrs ago
One Way/Basic
Jan 2027
From$187*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $192
cmp-daily-histogram-bars-legend-max-price-aria-label $498
Displaying fares for November-2026
  • STL–ISP, 11/11/2026: From $498
    11

    Wed

    NOV

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    12

    Thu

  • STL–ISP, 11/13/2026: From $498
    13

    Fri

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

  • STL–ISP, 11/15/2026: From $498
    15

    Sun

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • STL–ISP, 11/17/2026: From $370
    17

    Tue

  • STL–ISP, 11/18/2026: From $370
    18

    Wed

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • STL–ISP, 11/20/2026: From $370
    20

    Fri

  • STL–ISP, 11/21/2026: From $370
    21

    Sat

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

    Sun

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

    Mon

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    24

    Tue

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    25

    Wed

  • STL–ISP, 11/26/2026: From $241
    26

    Thu

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

    Fri

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    29

    Sun

  • STL–ISP, 11/30/2026: From $271
    30

    Mon

  • STL–ISP, 12/01/2026: From $229
    01

    Tue

    DEC

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

    Wed

  • STL–ISP, 12/03/2026: From $219
    03

    Thu

  • STL–ISP, 12/04/2026: From $207
    04

    Fri

  • STL–ISP: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • STL–ISP, 12/06/2026: From $202
    06

    Sun

  • STL–ISP, 12/07/2026: From $207
    07

    Mon

  • STL–ISP, 12/08/2026: From $202
    08

    Tue

  • STL–ISP, 12/09/2026: From $192
    09

    Wed

  • STL–ISP, 12/10/2026: From $219
    10

    Thu

    • Range$192-$498

    *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:
    Lambert-St Louis Int'l Airport
    Arriving at:
    Long Island MacArthur Airport
    Distance:
    929 miles

    Questions we hear the most

    There are 78 weekly flights from St. Louis to Long Island/Islip MacArthur on Southwest Airlines.
    To find the lowest fares by day and time to fly St. Louis 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 St. Louis 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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