ISP - GSP

$142 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
$309
Typical prices: $377-$746
Southwest
Wed 9/26Wed 10/3
ISP - GSP • 1 stop
Cheapest one-way
$142
Typical prices: $253-$253
Breeze Airways
Sun 9/23
ISP - GSP • 2 stops
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

Sat, Sep 26 - Sat, Oct 3
Southwest Logo
5:30 am - 10:05 amISP  Islip Long Island-GSP Greenville
4h 35m1 stop Baltimore/Washington
Southwest Logo
8:00 am - 11:55 amGSP  Greenville-ISP Islip Long Island
3h 55m1 stop Baltimore/Washington
$309Southwest
Sat, Sep 26 - Sat, Oct 3
Southwest Logo
5:30 am - 2:55 pmISP  Islip Long Island-GSP Greenville
9h 25m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
12:45 pm - 4:10 pmGSP  Greenville-ISP Islip Long Island
3h 25m1 stop Baltimore/Washington
$314Southwest
Mon, Dec 14 - Mon, Dec 21
Southwest Logo
4:05 pm - 7:50 pmISP  Islip Long Island-GSP Greenville
3h 45m1 stop Baltimore/Washington
Southwest Logo
8:05 am - 4:20 pmGSP  Greenville-ISP Islip Long Island
8h 15m1 stop Baltimore/Washington
$358Southwest
Mon, Dec 14 - Mon, Dec 21
Southwest Logo
12:30 pm - 8:45 pmISP  Islip Long Island-GSP Greenville
8h 15m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
8:05 am - 4:20 pmGSP  Greenville-ISP Islip Long Island
8h 15m1 stop Baltimore/Washington
$364Southwest
Mon, Dec 14 - Mon, Dec 21
Southwest Logo
6:05 am - 2:10 pmISP  Islip Long Island-GSP Greenville
8h 05m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
12:45 pm - 11:35 pmGSP  Greenville-ISP Islip Long Island
10h 50m2 stops Nashville Intl Orlando
$373Southwest
Thu, Nov 12 - Sun, Nov 15
Southwest Logo
5:35 am - 10:10 amISP  Islip Long Island-GSP Greenville
4h 35m1 stop Baltimore/Washington
Southwest Logo
8:15 am - 11:45 amGSP  Greenville-ISP Islip Long Island
3h 30m1 stop Baltimore/Washington
$397Southwest
Fri, Nov 13 - Sun, Nov 15
Southwest Logo
5:40 pm - 9:40 pmISP  Islip Long Island-GSP Greenville
4h 00m1 stop Baltimore/Washington
Southwest Logo
8:15 am - 5:05 pmGSP  Greenville-ISP Islip Long Island
8h 50m1 stop Baltimore/Washington
$402Southwest
Thu, Nov 12 - Sun, Nov 15
Southwest Logo
12:25 pm - 8:10 pmISP  Islip Long Island-GSP Greenville
7h 45m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
8:15 am - 11:45 amGSP  Greenville-ISP Islip Long Island
3h 30m1 stop Baltimore/Washington
$402Southwest
Sat, Sep 12 - Mon, Sep 14
Multiple Airlines Logo
5:43 pm - 11:31 amISP  Islip Long Island-GSP Greenville
41h 48m2 stops Orlando Cincinnati Cinci./N. Kentucky
Multiple Airlines Logo
8:32 pm - 4:58 pmGSP  Greenville-ISP Islip Long Island
20h 26m1 stop Orlando
$437Multiple Airlines
Thu, Sep 17 - Fri, Sep 18
Multiple Airlines Logo
5:43 pm - 8:45 amISP  Islip Long Island-GSP Greenville
15h 02m1 stop Orlando
Multiple Airlines Logo
6:55 pm - 11:20 amGSP  Greenville-ISP Islip Long Island
16h 25m2 stops Orlando Sanford Intl Raleigh-Durham
$449Multiple Airlines
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 from Islip to Greenville with more confidence.

How much is a round-trip flight from Islip to Greenville?

Round-trip flights from Islip to Greenville start at $309. Prices are below average for this route right now, with typical round-trip fares ranging from $377 to $746. The lowest price found in the past 5 days was $309 on Southwest.

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Key details for Islip to Greenville flights

Low season

August

Cheapest flight

$142
Most popular time to fly with an average 2% increase in price.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

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

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

  • 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. Other layover airports each see under 5%.

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

    Yes. Being flexible with your travel dates can save you up to 53% on the Islip to Greenville route. 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.

  • How long is a flight from Islip to Greenville?

    A nonstop flight from Islip to Greenville takes 0h 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.

  • 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 $309 to $1,444. 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 $436, which is 72% 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

  • 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.

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 can be flexible, aim for a Monday departure instead of Friday. On this route, Monday flights average $378 - about $418 less than Friday (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).

Everything you need to know for your flight from Islip to Greenville

Information on your arrival and departure airports

Islip (ISP)
Greenville (GSP)