What airlines fly to Islip, New York?

American Airlines, Spirit Airlines and Delta are the top three most popular airlines that fly to Islip, New York from Greenville according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 7 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Greenville Airport to Islip Long Island Airport?

Prices for flights from Greenville Airport to Islip Long Island Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Greenville Airport to Islip Long Island Airport?

There is 1 operator available for flights from Greenville Airport to Islip Long Island Airport as of December 2025.

How old do you have to be to fly from Greenville Airport to Islip Long Island Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Greenville Airport to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The travel and health documents required for your trip to Islip Long Island Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Islip Long Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$266 Cheap Flights from Greenville to Islip in 2025/26

1 adult

0 bags

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Find the cheapest flights from Greenville to New York

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:05 am - 4:15 pm

GSP

ISP

6h 10m1 stop

6:00 am - 10:40 am

ISP

GSP

4h 40m1 stop

$303Southwest

Tue, Feb 10 - Wed, Feb 11

10:05 am - 4:15 pm

GSP

ISP

6h 10m1 stop

6:00 am - 5:40 pm

ISP

GSP

11h 40m2 stops

$308Southwest

Tue, Feb 10 - Wed, Feb 11

11:15 am - 9:55 pm

GSP

ISP

10h 40m2 stops

6:00 am - 5:40 pm

ISP

GSP

11h 40m2 stops

$313Southwest

Tue, Feb 10 - Wed, Feb 11

8:10 am - 11:50 am

GSP

ISP

3h 40m1 stop

8:35 am - 1:15 pm

ISP

GSP

4h 40m1 stop

$367Southwest

Mon, Apr 20 - Mon, Apr 27

12:35 pm - 11:30 pm

GSP

ISP

10h 55m2 stops

4:30 pm - 8:55 pm

ISP

GSP

4h 25m1 stop

$372Southwest

Mon, Apr 20 - Mon, Apr 27

12:35 pm - 11:30 pm

GSP

ISP

10h 55m2 stops

12:30 pm - 10:15 pm

ISP

GSP

9h 45m2 stops

$377Southwest

Mon, Apr 20 - Mon, Apr 27

11:33 am - 1:09 pm

GSP

ISP

25h 36m1 stop

8:35 pm - 3:55 pm

ISP

GSP

43h 20m2 stops

$541Multiple Airlines

Thu, Dec 25 - Mon, Dec 29

2:06 pm - 5:14 pm

GSP

ISP

27h 08m1 stop

11:40 am - 7:23 pm

ISP

GSP

31h 43m2 stops

$543Breeze Airways

Tue, Dec 23 - Sun, Dec 28

2:06 pm - 5:14 pm

GSP

ISP

27h 08m1 stop

8:35 pm - 7:23 pm

ISP

GSP

22h 48m1 stop

$580Multiple Airlines

Tue, Dec 23 - Sun, Dec 28

7:40 am - 12:15 pm

GSP

ISP

4h 35m1 stop

5:50 pm - 9:55 pm

ISP

GSP

4h 05m1 stop

$597Southwest

Wed, Dec 24 - Sun, Dec 28

Southwest flights from Greenville to Islip, New York

Our best Southwest deals on Greenville to Islip, New York flight tickets

Southwest

Feb 10

GSP10:05 amGreenville

6h 10m

1 stop

ISP4:15 pmIslip Long Island

Feb 11

ISP6:00 amIslip Long Island

4h 40m

1 stop

GSP10:40 amGreenville

$303

Find similar

Southwest

Feb 10

GSP10:05 amGreenville

6h 10m

1 stop

ISP4:15 pmIslip Long Island

Feb 11

ISP6:00 amIslip Long Island

11h 40m

2 stops

GSP5:40 pmGreenville

$308

Find similar

Southwest

Feb 10

GSP11:15 amGreenville

10h 40m

2 stops

ISP9:55 pmIslip Long Island

Feb 11

ISP6:00 amIslip Long Island

11h 40m

2 stops

GSP5:40 pmGreenville

$313

Find similar

Breeze Airways flights from Greenville to Islip, New York

Our best Breeze Airways deals on Greenville to Islip, New York flight tickets

Breeze Airways

Dec 23

GSP2:06 pmGreenville

27h 08m

1 stop

ISP5:14 pmIslip Long Island

Dec 28

ISP11:40 amIslip Long Island

31h 43m

2 stops

GSP7:23 pmGreenville

$543

Find similar

Breeze Airways

Dec 25

GSP2:06 pmGreenville

28h 22m

1 stop

ISP6:28 pmIslip Long Island

Dec 29

ISP7:08 pmIslip Long Island

13h 45m

1 stop

GSP8:53 amGreenville

$824

Find similar

Breeze Airways

Dec 23

GSP4:43 pmGreenville

41h 15m

3 stops

ISP9:58 amIslip Long Island

Dec 28

ISP11:40 amIslip Long Island

31h 43m

2 stops

GSP7:23 pmGreenville

$854

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Greenville to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Tue 2/10

10:05 am-4:15 pm

1 stop6h 10m

Islip Long Island

Wed 2/11

6:00 am-10:40 am

1 stop4h 40m

$303

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Tue 2/10

10:05 am-4:15 pm

1 stop6h 10m

Islip Long Island

Wed 2/11

6:00 am-5:40 pm

2 stops11h 40m

$308

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Tue 2/10

11:15 am-9:55 pm

2 stops10h 40m

Islip Long Island

Wed 2/11

6:00 am-5:40 pm

2 stops11h 40m

$313

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Mon 4/20

8:10 am-11:50 am

1 stop3h 40m

Islip Long Island

Mon 4/27

8:35 am-1:15 pm

1 stop4h 40m

$367

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Mon 4/20

12:35 pm-11:30 pm

2 stops10h 55m

Islip Long Island

Mon 4/27

4:30 pm-8:55 pm

1 stop4h 25m

$372

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Mon 4/20

12:35 pm-11:30 pm

2 stops10h 55m

Islip Long Island

Mon 4/27

12:30 pm-10:15 pm

2 stops9h 45m

$377

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Thu 12/25

11:33 am-1:09 pm

1 stop25h 36m

Islip Long Island

Mon 12/29

8:35 pm-3:55 pm

2 stops43h 20m

$541

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Tue 12/23

2:06 pm-5:14 pm

1 stop27h 08m

Islip Long Island

Sun 12/28

11:40 am-7:23 pm

2 stops31h 43m

$543

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Tue 12/23

2:06 pm-5:14 pm

1 stop27h 08m

Islip Long Island

Sun 12/28

8:35 pm-7:23 pm

1 stop22h 48m

$580

GreenvilleIslip

GSP - ISP

GSPISP

Greenville

Wed 12/24

7:40 am-12:15 pm

1 stop4h 35m

Islip Long Island

Sun 12/28

5:50 pm-9:55 pm

1 stop4h 05m

$597

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Greenville to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Greenville to Islip, New York is on a Wednesday. Travelers who choose to depart for Islip, New York on a Wednesday will often find tickets for as low as $336. The most expensive day to fly to Islip, New York is Thursday, with ticket prices averaging around $366.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Greenville in the morning is the least expensive time of day to depart. momondo users have found prices as low as $346 when looking at flights departing in the morning. Flights to Islip, New York are more costly in the afternoon, with an average ticket price of $474. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Greenville to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from Greenville to Islip, New York according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Greenville to Islip, New York (GSP to ISP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Greenville to Islip, New York

Fastest flight time	3h 40m
Direct flights	None

The fastest flight from Greenville to Islip, New York takes 3h 40m

There are no direct flights from Greenville to Islip, New York. There are no popular flight routes from Greenville to Islip, New York.

Search flight deals

How far is Greenville to Islip Long Island by plane?
The straight-line distance from Greenville to Islip Long Island is 644.2 mi. A reasonable flight in good conditions will take 3h 40m.
When did momondo last update prices for flights from Greenville Airport to Islip Long Island Airport?
Prices for flights from Greenville Airport to Islip Long Island Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Greenville Airport to Islip Long Island Airport?
There is 1 operator available for flights from Greenville Airport to Islip Long Island Airport as of December 2025.
How old do you have to be to fly from Greenville Airport to Islip Long Island Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Greenville Airport to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents required for your trip to Islip Long Island Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Islip Long Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Greenville to Islip, New York?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Greenville to Islip, New York is Southwest (100% of total bookings).

Best airlines flying from Greenville to Islip, New York

Compare and see reviews for airlines that fly from Greenville to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $282	Free Cancellation	Rating 7.9 4,253 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Greenville to Islip?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Islip from Greenville.

Can I find flights from Greenville to Islip with flexible booking policies on momondo?

Flights from Greenville to Islip with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Greenville to Islip?

Once you have performed a search for Greenville to Islip flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Greenville to Islip right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Greenville to Islip flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.