Southwest® flights from Greenville-Spartanburg to Long Island/Islip MacArthur from $141

Promo Code

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

$

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 12/02/2026

One-way

Basic

From
$141
Seen: 9 hrs ago

Greenville-Spartanburg (GSP)to

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

One-way

Basic

From
$146
Seen: 21 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 11/26/2026

One-way

Basic

From
$146
Seen: 22 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 01/09/2027

One-way

Basic

From
$170
Seen: 6 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 01/16/2027

One-way

Basic

From
$170
Seen: 6 hrs ago

Greenville-Spartanburg (GSP)to

Long Island/Islip MacArthur (ISP)
Depart: 12/02/2026

One-way

Choice

From
$181
Seen: 9 hrs ago

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

Oct 2026
From$449*
Seen: 6 hrs ago
One Way/Basic
Nov 2026
From$146*
Seen: 22 hrs ago
One Way/Basic
Dec 2026
From$141*
Seen: 9 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $146
cmp-daily-histogram-bars-legend-max-price-aria-label $449
Displaying fares for October-2026
  • GSP–ISP, 10/30/2026: From $449
    30

    Fri

    OCT

  • GSP–ISP, 10/31/2026: From $449
    31

    Sat

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    01

    Sun

    NOV

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

    Mon

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

    Tue

  • GSP–ISP, 11/04/2026: From $449
    04

    Wed

  • GSP–ISP, 11/05/2026: From $354
    05

    Thu

  • GSP–ISP, 11/06/2026: From $354
    06

    Fri

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    07

    Sat

  • GSP–ISP, 11/08/2026: From $354
    08

    Sun

  • GSP–ISP: cmp-view-offers-disclaimer. Find Offers
    09

    Mon

  • GSP–ISP, 11/10/2026: From $354
    10

    Tue

  • GSP–ISP, 11/11/2026: From $354
    11

    Wed

  • GSP–ISP, 11/12/2026: From $259
    12

    Thu

  • GSP–ISP, 11/13/2026: From $259
    13

    Fri

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

    Sat

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

    Sun

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

    Mon

  • GSP–ISP, 11/17/2026: From $259
    17

    Tue

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

    Wed

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

    Thu

  • GSP–ISP, 11/20/2026: From $285
    20

    Fri

  • GSP–ISP, 11/21/2026: From $256
    21

    Sat

  • GSP–ISP, 11/22/2026: From $274
    22

    Sun

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

    Mon

  • GSP–ISP, 11/24/2026: From $333
    24

    Tue

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

    Wed

  • GSP–ISP, 11/26/2026: From $146
    26

    Thu

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

    Fri

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

    Sat

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

    Sun

    • Range$146-$449

    *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

    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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