ISP - GSP

$160 Find Cheap Flights from Islip to Greenville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Greenville departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Greenville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Greenville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Greenville, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$311
Multiple Airlines
Sun 4/12Sun 4/19
ISP - GSP • 1 stop
Cheapest one-way
$160
Southwest
Mon 5/18
ISP - GSP • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Islip and Greenville. You'll need at least 1 connection.
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Greenville!
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Booking Insights
Flight Deals

Cheap Flights from Islip to Greenville (ISP-GSP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to Greenville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Greenville

Sun, Apr 12 - Sun, Apr 19
Multiple Airlines Logo
7:59 pm - 7:38 pm
ISP
-
GSP
23h 39m
1 stop
Multiple Airlines Logo
2:12 pm - 1:31 pm
GSP
-
ISP
23h 19m
2 stops
$311Multiple Airlines
Thu, May 28 - Mon, Jun 1
Multiple Airlines Logo
7:30 am - 7:39 pm
ISP
-
GSP
12h 09m
1 stop
Multiple Airlines Logo
8:28 pm - 9:08 am
GSP
-
ISP
12h 40m
1 stop
$318Multiple Airlines
Mon, May 4 - Thu, May 7
Southwest Logo
8:35 am - 1:15 pm
ISP
-
GSP
4h 40m
1 stop
Southwest Logo
1:50 pm - 8:25 pm
GSP
-
ISP
6h 35m
1 stop
$319Southwest
Mon, May 4 - Thu, May 7
Southwest Logo
8:35 am - 1:15 pm
ISP
-
GSP
4h 40m
1 stop
Southwest Logo
12:35 pm - 11:30 pm
GSP
-
ISP
10h 55m
2 stops
$324Southwest
Mon, May 4 - Thu, May 7
Southwest Logo
8:35 am - 5:50 pm
ISP
-
GSP
9h 15m
2 stops
Southwest Logo
6:25 am - 4:30 pm
GSP
-
ISP
10h 05m
2 stops
$329Southwest
Mon, Apr 20 - Mon, Apr 27
Southwest Logo
4:30 pm - 8:55 pm
ISP
-
GSP
4h 25m
1 stop
Southwest Logo
8:10 am - 11:50 am
GSP
-
ISP
3h 40m
1 stop
$343Southwest
Thu, Apr 9 - Tue, Apr 14
Southwest Logo
4:30 pm - 8:55 pm
ISP
-
GSP
4h 25m
1 stop
Southwest Logo
1:55 pm - 6:30 pm
GSP
-
ISP
4h 35m
1 stop
$345Southwest
Mon, Apr 20 - Mon, Apr 27
Southwest Logo
8:35 am - 5:50 pm
ISP
-
GSP
9h 15m
2 stops
Southwest Logo
8:10 am - 11:50 am
GSP
-
ISP
3h 40m
1 stop
$348Southwest
Thu, Apr 9 - Tue, Apr 14
Southwest Logo
4:30 pm - 8:55 pm
ISP
-
GSP
4h 25m
1 stop
Southwest Logo
12:50 pm - 10:10 pm
GSP
-
ISP
9h 20m
2 stops
$350Southwest
Fri, Mar 27 - Tue, Mar 31
Southwest Logo
5:55 pm - 9:50 pm
ISP
-
GSP
3h 55m
1 stop
Southwest Logo
8:00 am - 11:40 am
GSP
-
ISP
3h 40m
1 stop
$355Southwest
Booking Insights

KAYAK's insights & trends for Islip to Greenville flights

Get data-powered insights and trends into flights from Islip to Greenville to help you find the cheapest flights, the best time to fly and much more.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Islip, New York to Greenville departing in April.
Find deals

Good to know

Low seasonAugust
Cheapest flight$160
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 11% lower on average.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Islip to Greenville

  • What is the cheapest flight from Islip to Greenville?

    In the last 3 days, the lowest price for a flight from Islip to Greenville was $160 for a one-way ticket and $311 for a round-trip.

  • Do I need a passport to fly between Islip and Greenville?

    No

  • Which airports will I be using when flying from Islip to Greenville?

    When flying out of Islip you will be using Islip Long Island. You will be landing at Greenville, also known as Greenville.

  • Which aircraft models fly most regularly from Islip to Greenville?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to Greenville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to Greenville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to Greenville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Greenville from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to Greenville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Greenville with an airline and back to Islip with another airline. Booking your flights between Islip and GSP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to Greenville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Greenville from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Islip to Greenville

 
See real verified KAYAK customer reviews for airlines flying from Islip to Greenville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to Greenville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4313 reviews
7.5Entertainment
8.6Crew
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

8.0 ExcellentDianne, Mar 2026
LAS - LAX
Read more Southwest reviews

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

The last 3 flights between BWI and BDL canceled the beverage service mid- way. Just say up front that the fight is too short. Thanks!

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

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

Information on your arrival and departure airports

Islip (ISP)
Greenville (GSP)