ISP - GSP

$173 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 3/8. 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
$291
Multiple Airlines
Sun 3/8Thu 3/12
ISP - GSP • 1 stop
Cheapest one-way
$173
Multiple Airlines
Sun 3/8
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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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, Mar 8 - Thu, Mar 12
Multiple Airlines Logo
5:08 pm - 7:38 pm
ISP
-
GSP
26h 30m
1 stop
Multiple Airlines Logo
2:12 pm - 9:48 am
GSP
-
ISP
19h 36m
1 stop
$291Multiple Airlines
Sun, Mar 8 - Thu, Mar 12
Multiple Airlines Logo
11:55 am - 7:38 pm
ISP
-
GSP
31h 43m
2 stops
Multiple Airlines Logo
2:12 pm - 9:48 am
GSP
-
ISP
19h 36m
1 stop
$344Multiple Airlines
Sun, Apr 19 - Sun, Apr 26
Multiple Airlines Logo
4:07 pm - 7:38 pm
ISP
-
GSP
27h 31m
1 stop
Multiple Airlines Logo
6:06 pm - 1:31 pm
GSP
-
ISP
19h 25m
2 stops
$361Multiple Airlines
Wed, Mar 25 - Wed, Apr 1
Southwest Logo
4:40 pm - 8:30 pm
ISP
-
GSP
3h 50m
1 stop
Southwest Logo
8:00 am - 11:40 am
GSP
-
ISP
3h 40m
1 stop
$377Southwest
Wed, Mar 25 - Wed, Apr 1
Southwest Logo
4:40 pm - 8:30 pm
ISP
-
GSP
3h 50m
1 stop
Southwest Logo
12:35 pm - 10:40 pm
GSP
-
ISP
10h 05m
2 stops
$382Southwest
Wed, Mar 25 - Wed, Apr 1
Southwest Logo
6:10 am - 5:45 pm
ISP
-
GSP
11h 35m
2 stops
Southwest Logo
12:35 pm - 10:40 pm
GSP
-
ISP
10h 05m
2 stops
$387Southwest
Fri, Mar 27 - Wed, Apr 1
Southwest Logo
5:55 pm - 9:50 pm
ISP
-
GSP
3h 55m
1 stop
Southwest Logo
12:35 pm - 10:40 pm
GSP
-
ISP
10h 05m
2 stops
$392Southwest
Fri, Jun 12 - Tue, Jun 16
Southwest Logo
9:10 am - 1:15 pm
ISP
-
GSP
4h 05m
1 stop
Southwest Logo
8:25 am - 1:45 pm
GSP
-
ISP
5h 20m
1 stop
$397Southwest
Sun, Apr 19 - Sun, Apr 26
Multiple Airlines Logo
4:07 pm - 7:38 pm
ISP
-
GSP
27h 31m
1 stop
Multiple Airlines Logo
4:55 pm - 6:40 pm
GSP
-
ISP
25h 45m
1 stop
$400Multiple Airlines
Fri, Jun 12 - Tue, Jun 16
Southwest Logo
3:05 pm - 10:45 pm
ISP
-
GSP
7h 40m
2 stops
Southwest Logo
8:25 am - 1:45 pm
GSP
-
ISP
5h 20m
1 stop
$402Southwest
Booking Insights

Good to know

Low seasonApril
Cheapest flight$173
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly and prices are also 3% 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 $173 for a one-way ticket and $291 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 4299 reviews
8.0Comfort
8.1Boarding
7.0Food
7.5Entertainment
8.6Crew
Airline reviews

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

2.0 MediocreAnonymous, Feb 2026
BWI - PBI
Read more Southwest reviews

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!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

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

Information on your arrival and departure airports

Islip (ISP)
Greenville (GSP)