ISP - GSP

$294 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 3/30. 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
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$294
Multiple Airlines
Thu 4/16Thu 4/23
ISP - GSP • 1 stop
Cheapest one-way
$289
Multiple Airlines
Mon 3/30
ISP - GSP • 1 stop
Top airlines
Southwest
Cheapest • from $358 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Islip and Greenville. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Greenville!
Flight Deals
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

Thu, Apr 16 - Thu, Apr 23
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
$294Multiple Airlines
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
4:07 pm - 7:38 pm
ISP
-
GSP
27h 31m
1 stop
Multiple Airlines Logo
2:12 pm - 7:36 pm
GSP
-
ISP
29h 24m
1 stop
$324Multiple Airlines
Sat, May 30 - Thu, Jun 4
Multiple Airlines Logo
6:43 pm - 7:39 pm
ISP
-
GSP
24h 56m
1 stop
Multiple Airlines Logo
7:51 pm - 7:51 pm
GSP
-
ISP
24h 00m
1 stop
$331Multiple Airlines
Sun, May 31 - Wed, Jun 3
Southwest Logo
5:15 am - 1:10 pm
ISP
-
GSP
7h 55m
2 stops
Southwest Logo
8:20 am - 1:50 pm
GSP
-
ISP
5h 30m
1 stop
$358Southwest
Sun, May 31 - Wed, Jun 3
Southwest Logo
5:15 am - 1:10 pm
ISP
-
GSP
7h 55m
2 stops
Southwest Logo
12:50 pm - 10:10 pm
GSP
-
ISP
9h 20m
2 stops
$363Southwest
Sat, May 30 - Thu, Jun 4
Southwest Logo
6:00 am - 10:10 am
ISP
-
GSP
4h 10m
1 stop
Southwest Logo
12:55 pm - 11:40 pm
GSP
-
ISP
10h 45m
2 stops
$368Southwest
Sat, May 30 - Thu, Jun 4
Southwest Logo
6:00 am - 4:35 pm
ISP
-
GSP
10h 35m
2 stops
Southwest Logo
1:55 pm - 11:40 pm
GSP
-
ISP
9h 45m
2 stops
$373Southwest
Thu, Apr 16 - Thu, Apr 23
Southwest Logo
8:35 am - 5:50 pm
ISP
-
GSP
9h 15m
2 stops
Southwest Logo
12:35 pm - 10:30 pm
GSP
-
ISP
9h 55m
2 stops
$383Southwest
Wed, Apr 15 - Mon, Apr 20
Southwest Logo
6:30 am - 1:10 pm
ISP
-
GSP
6h 40m
1 stop
Southwest Logo
1:50 pm - 8:25 pm
GSP
-
ISP
6h 35m
1 stop
$385Southwest
Wed, Apr 15 - Mon, Apr 20
Southwest Logo
12:30 pm - 9:40 pm
ISP
-
GSP
9h 10m
2 stops
Southwest Logo
1:50 pm - 8:25 pm
GSP
-
ISP
6h 35m
1 stop
$390Southwest
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.

Which airlines provide the cheapest flights from Islip to Greenville?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Islip to Greenville were found on Southwest ($358) and Breeze Airways ($719).

Find deals

Good to know

Low seasonAugust
Cheapest flight$289
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 13% 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 $289 for a one-way ticket and $294 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 4324 reviews
7.0Food
8.6Crew
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

10.0 ExcellentMartie, Mar 2026
LGB - BNA
Read more Southwest reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

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!

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

Information on your arrival and departure airports

Islip (ISP)
Greenville (GSP)