Cheap flights from Islip to Greenville-Spartanburg

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      Compare Islip to Greenville-Spartanburg flight deals

      Find the cheapest month or even day of the year to fly to Greenville-Spartanburg

      Book the best Greenville-Spartanburg fare with no extra fees

      Flight deals from Islip to Greenville-Spartanburg

      Looking for a cheap last-minute deal or the best round-trip flight from Islip Airport to Greenville-Spartanburg Airport? If you want to travel next month, round-trip fares start from $305. Find the lowest prices on one-way and round-trip tickets right here.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Islip to Greenville-Spartanburg found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Islip to Greenville-Spartanburg

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Islip to Greenville-Spartanburg flights are currently cheapest in October.

      Islip to Greenville-Spartanburg: Alternative routes

      Compare routes from Islip to Greenville below. You may find an airport to fly into that's cheaper, faster, or easier than Greenville-Spartanburg.

      Islip to Greenville: Flight information

      The things to know before you go.
      Cheapest flight found$305
      Cheapest month to flyOctober

      Finding cheap flights from Islip to Greenville-Spartanburg: Frequently asked questions

      The best price we found for a round-trip flight from Islip to Greenville-Spartanburg is $305. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Islip to Greenville-Spartanburg. But we found flights with one or more stops from $305.
      There are no flights flying from Islip to Greenville-Spartanburg, as of September 2026.
      The cheapest month to fly from Islip to Greenville-Spartanburg is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Islip Airport to Greenville-Spartanburg Airport on Wednesday, October 14, 2026.
      No airlines currently offer direct flights between Islip Airport and Greenville-Spartanburg Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Greenville-Spartanburg but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Greenville is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Breeze Airways offers the cheapest flight tickets to Greenville-Spartanburg.

      Flying from Islip Airport (ISP) to Greenville-Spartanburg Airport (GSP): what you need to know

      • Your ISP to GSP flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

      • During popular months such as July, it's a good idea to get to the airport earlier than normal. Plan to arrive two hours before domestic departures and four hours ahead for international flights whenever you're traveling during a high season in general.

      • If you want to explore another city along the way, just deselect 'Direct flights only' when searching for your ticket from Islip Airport to Greenville-Spartanburg Airport. These are the most popular stopovers between ISP and GSP:

        • Atlanta Hartsfield-Jackson Airport

        • Fort Lauderdale International Airport

        • Baltimore Washington International Airport

      Handy information about Islip Airport (ISP)

      • You'll find ISP at 100 Arrivals Avenue.

      • 76% of flights that take off from Islip Airport make it to their destination on schedule.

      • To get to Islip Airport from central Islip, it'll take around 10 minutes if you're going by car. Of course, this depends on traffic. It's approximately 6 kilometers from the airport to the city center.

      • You can expect a trip time of roughly 30 minutes on public transport.

      • Get your journey off to a leisurely start by staying near ISP. Whether you're taking an early flight from Islip Airport to Greenville-Spartanburg Airport or just don't want to be rushed, these hotels are perfect:

      Arriving at Greenville-Spartanburg Airport (GSP)

      Getting from Greenville-Spartanburg Airport (GSP) to central Greenville

      • GSP is located at 2000 GPS Drive, Suite 1.

      • From Greenville-Spartanburg Airport, Greenville is approximately 23 kilometers away. It takes around 25 minutes to get to the center driving.

      • Getting there by public transport will take you around 50 minutes.

      When to fly to Greenville-Spartanburg Airport (GSP)

      • August is the busiest month for flights from Islip Airport to Greenville-Spartanburg Airport. To escape the crowds, go to Greenville in January.

      • The warmest month in Greenville is July, with temperatures ranging between 19ºC (66ºF) and 34ºC (93ºF). Lock in your flights from Islip Airport to Greenville-Spartanburg Airport in this month if this is the type of weather you like.

      • Look for cheap tickets from ISP to GSP in January if you like traveling in cooler conditions. Temperatures are at their lowest then, ranging between -3ºC (27ºF) and 13ºC (55ºF) on average.

      Explore more of the United States

      • Charlotte is just one of the many cities in the United States waiting to be discovered once you've seen Greenville. Around 145 kilometers away to the east, its top attractions include Bechtler Museum of Modern Art, Discovery Place and NASCAR Hall of Fame.

      • Around 418 kilometers west of Greenville, Nashville is another essential stop in the United States. Experience this destination's highlights firsthand at Grand Ole Opry, Country Music Hall of Fame and Museum and The Johnny Cash Museum.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.