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ISP - GSP

$299 Find Cheap Flights from Islip to Greenville - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$299
Typical prices: $377-$746
Multiple Airlines
Mon 10/29Fri 11/2
ISP - GSP • 1 stop
Cheapest one-way
$307
Typical prices: $253-$253
Southwest
Tue 10/16
ISP - GSP • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Islip and Greenville. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
December
Cheapest • 33% price drop
April
Most popular
Good to know
+1
Good to know
+1
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Flight Deals

Cheap Flights from Islip to Greenville (ISP-GSP)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Greenville

Thu, Oct 29 - Mon, Nov 2
Multiple Airlines Logo
6:33 pm - 3:47 pmISP  Islip Long Island-GSP Greenville
21h 14m1 stop Orlando
Multiple Airlines Logo
8:32 pm - 12:58 pmGSP  Greenville-ISP Islip Long Island
16h 26m2 stops Orlando Wilmington New Hanover County
$299Multiple Airlines
Wed, Oct 28 - Thu, Oct 29
Southwest Logo
6:05 am - 10:05 amISP  Islip Long Island-GSP Greenville
4h 00m1 stop Baltimore/Washington
Southwest Logo
2:10 pm - 11:40 pmGSP  Greenville-ISP Islip Long Island
9h 30m1 stop Baltimore/Washington
$330Southwest
Wed, Oct 28 - Thu, Oct 29
Southwest Logo
12:50 pm - 9:05 pmISP  Islip Long Island-GSP Greenville
8h 15m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
2:10 pm - 11:40 pmGSP  Greenville-ISP Islip Long Island
9h 30m1 stop Baltimore/Washington
$336Southwest
Wed, Oct 28 - Thu, Oct 29
Southwest Logo
12:50 pm - 9:05 pmISP  Islip Long Island-GSP Greenville
8h 15m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
1:05 pm - 11:15 pmGSP  Greenville-ISP Islip Long Island
10h 10m2 stops Nashville Intl Orlando
$357Southwest
Thu, Oct 29 - Sun, Nov 1
Southwest Logo
5:40 pm - 9:35 pmISP  Islip Long Island-GSP Greenville
3h 55m1 stop Baltimore/Washington
Southwest Logo
8:15 am - 11:45 amGSP  Greenville-ISP Islip Long Island
3h 30m1 stop Baltimore/Washington
$405Southwest
Thu, Oct 29 - Mon, Nov 2
Southwest Logo
3:10 pm - 9:35 pmISP  Islip Long Island-GSP Greenville
6h 25m1 stop Baltimore/Washington
Southwest Logo
8:15 am - 5:05 pmGSP  Greenville-ISP Islip Long Island
8h 50m1 stop Baltimore/Washington
$410Southwest
Thu, Oct 29 - Sun, Nov 1
Southwest Logo
11:00 am - 10:50 pmISP  Islip Long Island-GSP Greenville
11h 50m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
8:15 am - 11:45 amGSP  Greenville-ISP Islip Long Island
3h 30m1 stop Baltimore/Washington
$416Southwest
Wed, Nov 4 - Sun, Nov 8
Breeze Airways Logo
12:00 pm - 9:32 amISP  Islip Long Island-GSP Greenville
21h 32m2 stops Raleigh-Durham Tampa
Breeze Airways Logo
8:04 pm - 11:15 amGSP  Greenville-ISP Islip Long Island
15h 11m1 stop Fort Myers SW Florida Intl
$437Breeze Airways
Tue, Oct 27 - Fri, Oct 30
Southwest Logo
4:20 pm - 8:05 pmISP  Islip Long Island-GSP Greenville
3h 45m1 stop Baltimore/Washington
Southwest Logo
8:25 am - 2:30 pmGSP  Greenville-ISP Islip Long Island
6h 05m1 stop Baltimore/Washington
$437Southwest
Mon, Oct 26 - Thu, Oct 29
Southwest Logo
5:40 pm - 9:35 pmISP  Islip Long Island-GSP Greenville
3h 55m1 stop Baltimore/Washington
Southwest Logo
8:25 am - 11:45 amGSP  Greenville-ISP Islip Long Island
3h 20m1 stop Baltimore/Washington
$437Southwest
Booking Insights

Price, demand and travel trends for Islip to Greenville flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Islip to Greenville?

Southwest ($330) and Breeze Airways ($437) are the cheapest airlines to fly round-trip from Islip to Greenville according to KAYAK data over the last 5 days.

Find deals

Key details for Islip to Greenville flights

Low season

August

Cheapest flight

$299
Round-trip flight from Islip to Greenville

When to book flights from Islip to Greenville

Are your dates flexible? Find out the best times to travel from Islip to Greenville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Islip to Greenville flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Islip to Greenville?

    Only Economy Class is available on flights from Islip to Greenville.

  • How long is a flight from Islip to Greenville?

    A nonstop flight from Islip to Greenville takes 00m, covering 642 miles.

  • Do I need a passport to fly from Islip to Greenville?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Islip to Greenville flight?

    Round-trip flights from Islip to Greenville range from $377 to $746, with an average of $497 over the past 12 months. Anything below $377 counts as a good deal.

  • Have flight prices from Islip to Greenville changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $299 to $1,613. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from Islip to Greenville looking right now?

    One-way fares from Islip to Greenville are currently higher than usual. Average one-way flight prices are about $468, which is 84% above the typical average for this route.

  • What car rental options are available at Greenville Airport (GSP)?

    Greenville Airport (GSP) hosts 5 major car rental companies, with daily rates starting from around $30 for economy cars. Top options include:

    • Budget
    • Alamo
    • Thrifty
    • Enterprise Rent-A-Car
    • Avis

  • Which airports can I use when flying from Islip to Greenville?

    Flights from Islip to Greenville usually depart from Islip Long Island (ISP) and arrive at Greenville (GSP).

  • Which airports do connecting flights from Islip to Greenville pass through?

    Most connecting flights from Islip to Greenville pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route.

  • Can I save money by using flexible dates for flights from Islip to Greenville?

    Yes. Flexible dates can save you up to 53% on flights from Islip to Greenville. Monday is the cheapest departure day at $378 round-trip on average, while Friday is the most expensive at $796, a difference of $418.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Your guide to booking Islip to Greenville flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Friday. On this route, Monday flights average $378, about $418 less than Friday fares (53% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Islip to Greenville trip for December. Fares historically average $334 round-trip in that month - typically $462 less than the most expensive month, which is May (based on the last 12 months).

More options for your flight from Islip to Greenville

Complete your trip to Greenville with a hotel stay or car rental

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