ISP - GSP

$184 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 1/30. 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
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Everything you should know

Cheapest round-trip
$282
Multiple Airlines
Thu 11/27Mon 12/1
ISP - GSP • 1 stop
Cheapest one-way
$184
Southwest
Fri 1/30
ISP - GSP • 1 stop
Top airlines
Southwest
Cheapest • from $412 (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

Thu, Nov 27 - Mon, Dec 1
Multiple Airlines Logo
10:02 am - 3:24 pmISP-GSP
29h 22m1 stop
Multiple Airlines Logo
8:03 pm - 7:34 pmGSP-ISP
23h 31m1 stop
$282Multiple Airlines
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Tue, Nov 25 - Mon, Dec 1
Multiple Airlines Logo
6:00 am - 8:15 pmISP-GSP
14h 15m1 stop
Multiple Airlines Logo
8:03 pm - 7:34 pmGSP-ISP
23h 31m1 stop
$331Multiple Airlines
Find Deal
Tue, Nov 25 - Mon, Dec 1
Multiple Airlines Logo
11:40 am - 8:15 pmISP-GSP
8h 35m2 stops
Multiple Airlines Logo
8:03 pm - 7:34 pmGSP-ISP
23h 31m1 stop
$347Multiple Airlines
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Wed, Nov 26 - Mon, Dec 1
Multiple Airlines Logo
8:45 pm - 9:53 amISP-GSP
13h 08m1 stop
Multiple Airlines Logo
8:03 pm - 7:34 pmGSP-ISP
23h 31m1 stop
$387Multiple Airlines
Find Deal
Fri, May 1 - Sun, May 3
Southwest Logo
4:30 pm - 8:55 pmISP-GSP
4h 25m1 stop
Southwest Logo
8:00 am - 4:40 pmGSP-ISP
8h 40m1 stop
$412Southwest
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Wed, Nov 26 - Mon, Dec 1
Multiple Airlines Logo
11:03 am - 4:37 pmISP-GSP
29h 34m2 stops
Multiple Airlines Logo
8:03 pm - 7:34 pmGSP-ISP
23h 31m1 stop
$431Multiple Airlines
Find Deal
Fri, May 1 - Sun, May 3
Southwest Logo
6:00 am - 5:50 pmISP-GSP
11h 50m2 stops
Southwest Logo
8:00 am - 4:40 pmGSP-ISP
8h 40m1 stop
$433Southwest
Find Deal
Fri, May 1 - Sun, May 3
Southwest Logo
6:00 am - 5:50 pmISP-GSP
11h 50m2 stops
Southwest Logo
6:30 am - 4:40 pmGSP-ISP
10h 10m2 stops
$508Southwest
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Tue, Nov 25 - Sat, Nov 29
Multiple Airlines Logo
6:00 am - 8:15 pmISP-GSP
14h 15m1 stop
Multiple Airlines Logo
4:05 pm - 10:09 amGSP-ISP
18h 04m2 stops
$645Multiple Airlines
Find Deal
Tue, Nov 25 - Sun, Nov 30
Multiple Airlines Logo
6:00 am - 8:15 pmISP-GSP
14h 15m1 stop
Multiple Airlines Logo
5:38 pm - 8:02 amGSP-ISP
14h 24m2 stops
$685Multiple Airlines
Find Deal
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.

What’s the cheapest day of the week to fly from Islip to Greenville?

The average price of all round-trip flights from Islip to Greenville clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Greenville on a Wednesday and more expensive on a Tuesday. On your return trip to Islip, you should consider flying back on a Wednesday, and avoid Thursdays for better deals.

Find deals

Good to know

Low seasonApril
Cheapest flight$184
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly with an average 7% 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
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 $184 for a one-way ticket and $282 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 4235 reviews
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
Airline reviews

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

2.0 MediocreCharity, Nov 2025MSP - MDW
Read more Southwest reviews

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

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

Information on your arrival and departure airports

Islip (ISP)
Greenville (GSP)