Which airports can I use when flying from Islip to Greenville?

Flights from Islip to Greenville usually depart from Islip Long Island (ISP) and arrive at Greenville (GSP).

What cabin classes can I book on flights from Islip to Greenville?

Only Economy Class is available on flights from Islip to Greenville.

Which airports do connecting flights from Islip to Greenville pass through?

Most connecting flights from Islip to Greenville pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

Can I save money by using flexible dates for flights from Islip to Greenville?

Yes. Being flexible with your travel dates can save you up to 53% on the Islip to Greenville route. Monday is the cheapest departure day at $378 round-trip on average, while Friday is the most expensive at $796, a difference of $418. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Islip to Greenville?

A nonstop flight from Islip to Greenville takes 0h 00m, covering 642 miles.

Do I need a passport to fly from Islip to Greenville?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Islip to Greenville changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $309 to $1,900. That means the highest observed fare was about 6x higher than the lowest one.

How are flight prices from Islip to Greenville looking right now?

One-way fares from Islip to Greenville are currently in line with typical prices for this route. Average one-way fares are about $243.

What car rental options are available at Greenville Airport (GSP)?

Greenville Airport (GSP) hosts 5 major car rental companies, with daily rates starting from around $30 for economy cars. Top options include: · Budget · Alamo · Thrifty · Enterprise Rent-A-Car · Avis

How much should I expect to pay for a Islip to Greenville flight?

Round-trip flights from Islip to Greenville range from $377 to $746, with an average of $497 over the past 12 months. Anything below $377 counts as a good deal.

What is the cheapest airline to fly from Islip to Greenville?

Southwest ($309) offered the cheapest round-trip ticket from Islip to Greenville in the last 5 days.

What is the cheapest layover airport when flying from Islip to Greenville?

Flights via Baltimore/Washington (BWI) offer the most affordable fares, with an average round-trip price of $560. Based on KAYAK data over the past 3 months.

When flying from Islip to Greenville which airport offers the shortest layover?

Baltimore/Washington (BWI) had the shortest average connection time for Islip to Greenville layovers at 174 minutes over the past 3 months.

$155 CHEAP FLIGHTS from Islip to Greenville (ISP - GSP)

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Cheapest round-trip

$309

Typical prices: $377-$746

Southwest

Sat 10/20Wed 10/24

ISP - GSP • 1 stop

Cheapest one-way

$155

Typical prices: $253-$253

Southwest

Sun 10/7

ISP - GSP • 1 stop

Nonstop flights

Not available

There are currently no direct flights between Islip and Greenville. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

December

Cheapest • 33% price drop

April

Most popular

Good to know

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We hope you love your trip to Greenville!

Flight Deals

Cheap Flights from Islip to Greenville (ISP-GSP)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Islip to Greenville

Tue, Oct 20 - Sat, Oct 24

6:05 am - 10:05 amISP Islip Long Island-GSP Greenville

4h 00m1 stop Baltimore/Washington

12:45 pm - 4:10 pmGSP Greenville-ISP Islip Long Island

3h 25m1 stop Baltimore/Washington

$309Southwest

Tue, Sep 29 - Tue, Oct 6

6:05 am - 10:15 amISP Islip Long Island-GSP Greenville

4h 10m1 stop Baltimore/Washington

1:25 pm - 8:00 pmGSP Greenville-ISP Islip Long Island

6h 35m1 stop Baltimore/Washington

$309Southwest

Tue, Sep 29 - Tue, Oct 6

12:55 pm - 7:30 pmISP Islip Long Island-GSP Greenville

6h 35m1 stop Baltimore/Washington

7:00 am - 3:45 pmGSP Greenville-ISP Islip Long Island

8h 45m2 stops Nashville Intl Baltimore/Washington

$314Southwest

Tue, Oct 20 - Sat, Oct 24

4:20 pm - 8:05 pmISP Islip Long Island-GSP Greenville

3h 45m1 stop Baltimore/Washington

6:40 am - 4:10 pmGSP Greenville-ISP Islip Long Island

9h 30m2 stops Nashville Intl Baltimore/Washington

$314Southwest

Tue, Sep 29 - Tue, Oct 6

12:55 pm - 8:55 pmISP Islip Long Island-GSP Greenville

8h 00m2 stops Baltimore/Washington Nashville Intl

7:00 am - 3:45 pmGSP Greenville-ISP Islip Long Island

8h 45m2 stops Nashville Intl Baltimore/Washington

$319Southwest

Tue, Oct 20 - Sat, Oct 24

6:05 am - 6:30 pmISP Islip Long Island-GSP Greenville

12h 25m2 stops Baltimore/Washington Nashville Intl

6:40 am - 4:10 pmGSP Greenville-ISP Islip Long Island

9h 30m2 stops Nashville Intl Baltimore/Washington

$325Southwest

Sat, Oct 31 - Mon, Nov 2

6:00 am - 11:25 amISP Islip Long Island-GSP Greenville

5h 25m1 stop Baltimore/Washington

8:15 am - 11:45 amGSP Greenville-ISP Islip Long Island

3h 30m1 stop Baltimore/Washington

$332Southwest

Sat, Oct 31 - Mon, Nov 2

6:00 am - 1:20 pmISP Islip Long Island-GSP Greenville

7h 20m2 stops Baltimore/Washington Nashville Intl

8:15 am - 11:45 amGSP Greenville-ISP Islip Long Island

3h 30m1 stop Baltimore/Washington

$337Southwest

Thu, Sep 17 - Mon, Sep 21

5:43 pm - 8:45 amISP Islip Long Island-GSP Greenville

15h 02m1 stop Orlando

8:32 pm - 12:58 pmGSP Greenville-ISP Islip Long Island

16h 26m2 stops Orlando Wilmington New Hanover County

$393Multiple Airlines

Thu, Sep 17 - Mon, Sep 21

5:43 pm - 8:45 amISP Islip Long Island-GSP Greenville

15h 02m1 stop Orlando

8:32 pm - 4:58 pmGSP Greenville-ISP Islip Long Island

20h 26m1 stop Orlando

$406Multiple Airlines

Booking Insights

Price, demand and travel trends for Islip to Greenville flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Islip to Greenville with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Islip to Greenville?

Round-trip flights from Islip to Greenville start at $309. Prices are below average for this route right now, with typical round-trip fares ranging from $377 to $746. The lowest price found in the past 5 days was $309 on Southwest.

Find deals

Low season	August
High season	April
Cheapest flight	$155

Most popular time to fly with an average 2% 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.

Which airports can I use when flying from Islip to Greenville?
Flights from Islip to Greenville usually depart from Islip Long Island (ISP) and arrive at Greenville (GSP).
What cabin classes can I book on flights from Islip to Greenville?
Only Economy Class is available on flights from Islip to Greenville.
Which airports do connecting flights from Islip to Greenville pass through?
Most connecting flights from Islip to Greenville pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from Islip to Greenville?
Yes. Being flexible with your travel dates can save you up to 53% on the Islip to Greenville route. Monday is the cheapest departure day at $378 round-trip on average, while Friday is the most expensive at $796, a difference of $418. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How long is a flight from Islip to Greenville?
A nonstop flight from Islip to Greenville takes 0h 00m, covering 642 miles.
Do I need a passport to fly from Islip to Greenville?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from Islip to Greenville changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $309 to $1,900. That means the highest observed fare was about 6x higher than the lowest one.
How are flight prices from Islip to Greenville looking right now?
One-way fares from Islip to Greenville are currently in line with typical prices for this route. Average one-way fares are about $243.
What car rental options are available at Greenville Airport (GSP)?
Greenville Airport (GSP) hosts 5 major car rental companies, with daily rates starting from around $30 for economy cars. Top options include:
· Budget
· Alamo
· Thrifty
· Enterprise Rent-A-Car
· Avis
How much should I expect to pay for a Islip to Greenville flight?
Round-trip flights from Islip to Greenville range from $377 to $746, with an average of $497 over the past 12 months. Anything below $377 counts as a good deal.

If your dates can be flexible, aim for a Monday departure instead of Friday. On this route, Monday flights average $378 - about $418 less than Friday (53% savings) based on the last 12 months.
If you can choose when to travel, plan your Islip to Greenville trip for December. Fares historically average $334 round-trip in that month - typically $462 less than the most expensive month, which is May (based on the last 12 months).

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ISP - GSP

$155 Find Cheap Flights from Islip to Greenville - Compare and Save

Everything you should know

Cheap Flights from Islip to Greenville (ISP-GSP)

Recent round-trip flight deals from Islip to Greenville

Recent one-way flight deals from Islip to Greenville

Recent last minute flight deals from Islip to Greenville

Price, demand and travel trends for Islip to Greenville flights

How much is a round-trip flight from Islip to Greenville?

What is the cheapest airline to fly from Islip to Greenville?

What is the cheapest layover airport when flying from Islip to Greenville?

When flying from Islip to Greenville which airport offers the shortest layover?

Key details for Islip to Greenville flights

Low season

High season

Cheapest flight

When to book flights from Islip to Greenville

Your Islip to Greenville flight questions, answered

Your guide to booking Islip to Greenville flights

More options for your flight from Islip to Greenville

Complete your trip to Greenville with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Islip to Greenville

Find direct flights to and from Islip and Greenville

Flights from domestic origins to Greenville

Flights to other popular destinations

Find deals for your return flight