ISP - GSP

$199 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 4/5. 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
$534
Southwest
Fri 5/1Sun 5/3
ISP - GSP • 1 stop
Cheapest one-way
$199
Southwest
Sun 4/5
ISP - GSP • 1 stop
Top airlines
Southwest
Cheapest • from $534 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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!
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

Fri, May 1 - Sun, May 3
Southwest Logo
4:30 pm - 8:55 pm
ISP
-
GSP
4h 25m
1 stop
Southwest Logo
8:00 am - 11:50 am
GSP
-
ISP
3h 50m
1 stop
$534Southwest
Fri, May 1 - Sun, May 3
Southwest Logo
12:30 pm - 10:15 pm
ISP
-
GSP
9h 45m
2 stops
Southwest Logo
8:00 am - 11:50 am
GSP
-
ISP
3h 50m
1 stop
$546Southwest
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
7:43 pm - 7:38 pm
ISP
-
GSP
23h 55m
1 stop
Multiple Airlines Logo
8:18 pm - 6:44 pm
GSP
-
ISP
22h 26m
2 stops
$595Multiple Airlines
Thu, Feb 5 - Mon, Feb 9
Breeze Airways Logo
7:26 pm - 7:38 pm
ISP
-
GSP
24h 12m
2 stops
Breeze Airways Logo
8:18 pm - 11:10 am
GSP
-
ISP
38h 52m
2 stops
$687Breeze Airways
Fri, May 1 - Sun, May 3
Southwest Logo
12:30 pm - 10:15 pm
ISP
-
GSP
9h 45m
2 stops
Southwest Logo
1:45 pm - 11:45 pm
GSP
-
ISP
10h 00m
2 stops
$737Southwest
Thu, Feb 5 - Mon, Feb 9
Breeze Airways Logo
11:55 am - 3:27 pm
ISP
-
GSP
27h 32m
3 stops
Breeze Airways Logo
8:18 pm - 11:10 am
GSP
-
ISP
38h 52m
2 stops
$831Breeze Airways
Fri, May 1 - Sun, May 3
Breeze Airways Logo
2:31 pm - 4:15 pm
ISP
-
GSP
49h 44m
2 stops
Breeze Airways Logo
9:47 pm - 11:14 am
GSP
-
ISP
37h 27m
3 stops
$925Breeze Airways
Fri, May 1 - Sun, May 3
Breeze Airways Logo
7:20 pm - 1:12 pm
ISP
-
GSP
41h 52m
3 stops
Breeze Airways Logo
9:47 pm - 11:14 am
GSP
-
ISP
37h 27m
3 stops
$1,062Breeze Airways
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 ($534) and Breeze Airways ($687).

Find deals

Good to know

Low seasonApril
Cheapest flight$199
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly and prices are also 4% 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 $199 for a one-way ticket and $534 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 4266 reviews
8.6Crew
8.0Comfort
7.0Food
8.1Boarding
7.5Entertainment
Airline reviews

Great flight but super high price. Glad it was a business trip and not personal

10.0 ExcellentPieter, Jan 2026
LGB - DAL
Read more Southwest reviews

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

We got exit row seats both flights. Everything was running on time

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off 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)