Southwest® flights from Greenville-Spartanburg to Long Island/Islip MacArthur from $135

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Low fares from Greenville-Spartanburg to Long Island/Islip MacArthur

$

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 11/14/2026

One-way

Basic

From
$135
Seen: 23 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 11/17/2026

One-way

Basic

From
$141
Seen: 23 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 11/18/2026

One-way

Basic

From
$141
Seen: 22 hrs ago

Greenville-Spartanburg (GSP)to

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

One-way

Basic

From
$141
Seen: 12 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 10/07/2026

One-way

Basic

From
$159
Seen: 8 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 10/29/2026

One-way

Basic

From
$168
Seen: 3 hrs ago

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Explore flights from Greenville-Spartanburg to Long Island/Islip MacArthur

Sep 2026
From$344*
Seen: 4 hrs ago
One Way/Basic
Oct 2026
From$159*
Seen: 8 hrs ago
One Way/Basic
Nov 2026
From$135*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $439
Displaying fares for September-2026
  • GSP–ISP, 09/18/2026: From $439
    18

    Fri

    SEP

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

    Sat

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

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

    Mon

  • GSP–ISP, 09/22/2026: From $439
    22

    Tue

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

    Wed

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

    Thu

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

    Fri

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    26

    Sat

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

    Sun

  • GSP–ISP, 09/28/2026: From $344
    28

    Mon

  • GSP–ISP, 09/29/2026: From $344
    29

    Tue

  • GSP–ISP, 09/30/2026: From $344
    30

    Wed

  • GSP–ISP, 10/01/2026: From $344
    01

    Thu

    OCT

  • GSP–ISP, 10/02/2026: From $254
    02

    Fri

  • GSP–ISP, 10/03/2026: From $249
    03

    Sat

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    04

    Sun

  • GSP–ISP, 10/05/2026: From $254
    05

    Mon

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    06

    Tue

  • GSP–ISP, 10/07/2026: From $159
    07

    Wed

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    08

    Thu

  • GSP–ISP, 10/09/2026: From $339
    09

    Fri

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    10

    Sat

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

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

    Mon

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    13

    Tue

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

    Wed

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

    Thu

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

    Fri

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

    • Range$159-$439

    *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:
    Greenville-Spartanburg International Airport
    Arriving at:
    Long Island MacArthur Airport
    Distance:
    643 miles

    Route Information

    47† 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 47 weekly flights from Greenville-Spartanburg to Long Island/Islip MacArthur on Southwest Airlines.
    To find the lowest fares by day and time to fly Greenville-Spartanburg 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 Greenville-Spartanburg 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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