$61+ Cheap flights from Islip, NY to Charleston (ISP - CHS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — CHS
Nov 19 — Nov 261
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Charleston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider ’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Islip Long Island to Charleston are usually found in January or June, booked 40 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday
Cheap flight deals from Islip to Charleston
Cheapest
Best
Last-minute
One-way
Cheapest flights from Islip to CharlestonExplore the most affordable flight options available from Islip to Charleston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2026.
Explore the most affordable flight options available from Islip to Charleston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2026.
This CheapOair deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/317:45 pm -
1 stop3h 31m
Mon 1/47:05 am -
Nonstop1h 54m
Deal found 10/18![Breeze Airways logo]()
$185
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/177:45 pm -
1 stop3h 31m
Mon 1/47:05 am -
Nonstop1h 54m
Deal found 10/15![Breeze Airways logo]()
$186
This CheapOair deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/207:45 pm -
1 stop3h 31m
Mon 1/47:05 am -
Nonstop1h 54m
Deal found 10/16![Breeze Airways logo]()
$198
This CheapOair deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/247:45 pm -
1 stop3h 31m
Fri 1/17:05 am -
Nonstop1h 54m
Deal found 10/17![Breeze Airways logo]()
$209
This CheapOair deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:39 am -
Nonstop2h 12m
Mon 12/77:05 am -
Nonstop1h 54m
Deal found 10/20![Breeze Airways logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/149:39 am -
Nonstop2h 12m
Fri 12/187:05 am -
Nonstop1h 54m
Deal found 10/19![Breeze Airways logo]()
$232
This CheapOair deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:45 pm -
1 stop3h 31m
Mon 12/77:05 am -
Nonstop1h 54m
Deal found 10/17![Breeze Airways logo]()
$240
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:39 am -
Nonstop2h 12m
Thu 11/193:50 pm -
1 stop3h 15m
Deal found 10/15![Breeze Airways logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:45 pm -
1 stop3h 31m
Thu 11/53:50 pm -
1 stop3h 15m
Deal found 10/17![Breeze Airways logo]()
$249
Best flights from Islip to CharlestonDiscover carefully curated flight deals from Islip to Charleston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.
Discover carefully curated flight deals from Islip to Charleston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:05 am -
1 stop4h 15m
Thu 12/1711:00 am -
1 stop6h 05m
Deal found 10/20![Southwest logo]()
$306
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:45 pm -
1 stop3h 31m
Sun 12/133:50 pm -
1 stop3h 15m
Deal found 10/15![Breeze Airways logo]()
$311
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:39 am -
Nonstop2h 12m
Fri 11/137:05 am -
Nonstop1h 54m
Deal found 10/15![Breeze Airways logo]()
$314
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/258:06 pm -
1 stop3h 31m
Sun 2/284:11 pm -
1 stop3h 15m
Deal found 10/15![Breeze Airways logo]()
$369
This Southwest deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:05 pm -
1 stop4h 00m
Mon 12/77:30 am -
1 stop4h 15m
Deal found 10/16![Southwest logo]()
$421
This Southwest deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:45 pm -
1 stop7h 25m
Mon 11/97:55 pm -
1 stop3h 40m
Deal found 10/16![Southwest logo]()
$426
This Southwest deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1712:35 pm -
1 stop8h 20m
Mon 4/197:30 am -
1 stop4h 20m
Deal found 10/16![Southwest logo]()
$452
This Southwest deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/215:45 am -
2 stops11h 50m
Sun 1/2411:00 am -
2 stops10h 30m
Deal found 10/17![Southwest logo]()
$457
This Southwest deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1612:25 pm -
1 stop6h 00m
Mon 4/197:30 am -
1 stop4h 20m
Deal found 10/16![Southwest logo]()
$497
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:40 pm -
1 stop4h 40m
Mon 11/97:55 pm -
1 stop3h 40m
Deal found 10/19![Southwest logo]()
$508
Last-minute flights from Islip to CharlestonDiscover last-minute flight deals from Islip to Charleston. Data last updated October 20, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Charleston. Data last updated October 20, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:39 am -
Nonstop2h 12m
Fri 10/307:05 am -
Nonstop1h 54m
Deal found 10/15![Breeze Airways logo]()
$260
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:45 pm -
1 stop3h 31m
Fri 10/307:05 am -
Nonstop1h 54m
Deal found 10/15![Breeze Airways logo]()
$257
This CheapOair deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:45 pm -
1 stop3h 31m
Thu 11/53:50 pm -
1 stop3h 15m
Deal found 10/18![Breeze Airways logo]()
$285
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:45 pm -
1 stop3h 31m
Mon 11/27:05 am -
Nonstop1h 54m
Deal found 10/15![Breeze Airways logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:45 pm -
1 stop3h 31m
Thu 11/53:50 pm -
1 stop3h 15m
Deal found 10/17![Breeze Airways logo]()
$249
This CheapOair deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:39 am -
Nonstop2h 12m
Fri 11/137:05 am -
Nonstop1h 54m
Deal found 10/19![Breeze Airways logo]()
$270
This CheapOair deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:45 pm -
1 stop3h 31m
Mon 11/167:05 am -
Nonstop1h 54m
Deal found 10/17![Breeze Airways logo]()
$277
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:39 am -
Nonstop2h 12m
Thu 11/193:50 pm -
1 stop3h 15m
Deal found 10/15![Breeze Airways logo]()
$247
This CheapOair deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:45 pm -
1 stop3h 31m
Wed 11/256:20 am -
1 stop11h 13m
Deal found 10/18![Breeze Airways logo]()
$303
One-way flights from Islip to CharlestonSearch for one-way flight options from Islip to Charleston. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
Search for one-way flight options from Islip to Charleston. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/810:34 am -
Nonstop2h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Breeze Airways logo]()
$61
This CheapOair deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/189:39 am -
Nonstop2h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Breeze Airways logo]()
$81
This CheapOair deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:45 pm -
1 stop3h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Breeze Airways logo]()
$95
This CheapOair deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:39 am -
Nonstop2h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Breeze Airways logo]()
$103
This CheapOair deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/177:45 pm -
1 stop3h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Breeze Airways logo]()
$105
This CheapOair deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:45 pm -
1 stop3h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Breeze Airways logo]()
$108
This CheapOair deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:39 am -
Nonstop2h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Breeze Airways logo]()
$114
This CheapOair deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:45 pm -
1 stop3h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Breeze Airways logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:45 pm -
1 stop3h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Breeze Airways logo]()
$131
This CheapOair deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/259:39 am -
Nonstop2h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Breeze Airways logo]()
$135
This CheapOair deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:45 pm -
1 stop3h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Breeze Airways logo]()
$138
Find flight deals from Islip to Charleston
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Charleston (CHS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $117 (Kiwi.com) |
One-way from | $61 (CheapOair) |
Popular in | November |
Cheapest in | January |
Average price | $226 |
Good round-trip deal | $297 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Charleston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 20, 2026.
Use the filters below to find and compare flights from Islip to Charleston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Sun 1/10
8:06 pm-11:37 pm
1 stop3h 31m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$81
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Sun 12/6
7:45 pm-11:16 pm
1 stop3h 31m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$95
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Thu 11/12
7:45 pm-11:16 pm
1 stop3h 31m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$135
Quickest round-trip
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Fri 12/25
9:39 am-11:51 am
Nonstop2h 12m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$135
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Sun 11/22
7:45 pm-11:16 pm
1 stop3h 31m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$135
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Sat 12/19
5:05 pm-10:40 pm
1 stop5h 35m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$141
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Thu 12/24
7:45 pm-11:16 pm
1 stop3h 31m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$143
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Fri 11/20
9:39 am-11:51 am
Nonstop2h 12m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$157
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Thu 10/29
7:45 pm-11:16 pm
1 stop3h 31m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$159
IslipCharleston
ISP Islip Long Island - CHS Charleston
ISPCHS
Islip Long Island
Sun 11/15
7:45 pm-11:16 pm
1 stop3h 31m
Charleston
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$182
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Islip to Charleston
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Charleston in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Islip, New York-Charleston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Charleston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Charleston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Islip, New York-Charleston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Charleston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Islip to Charleston
Have a flexible travel schedule? Discover the best time to fly to Charleston from Islip with our price prediction graph.
ISP-CHS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Islip to Charleston
How far ahead should I book a flight from Islip, New York to Charleston?
The best time to book flights from Islip, New York to Charleston is 38 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Islip, New York to Charleston?
Currently, January is the cheapest month in which you can book a flight from Islip, New York to Charleston (average of $190). Flying from Islip, New York to Charleston in November is currently the most expensive (average of $370). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ISP to CHS?
Find hourly flight availability from Islip to Charleston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 20, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 50% on flights from Islip, New York to Charleston by exploring options for tickets at noon.
Reviews of airlines servicing Charleston
Get insights into the airlines that provide service to Charleston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Charleston. Reviews last updated October 20, 2026.
Read reviews from past customers who have flown Breeze Airways and Southwest from Islip to Charleston. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.4
Crew
8.8
Entertainment
6.8
Food
6.7
Overall
8.2
Comfort
8.2
Reviews
1 / 19
10.0
ExcellentJames,Oct 2026
RSW - RDU
Boarding
8.4
Crew
8.8
Entertainment
6.8
Food
6.7
Overall
8.2
Comfort
8.2
Reviews
1 / 19
10.0
ExcellentJames,Oct 2026
RSW - RDU
Boarding
8.4
Crew
8.8
Entertainment
6.8
Food
6.7
Overall
8.2
Comfort
8.2
Reviews
1 / 19
10.0
ExcellentJames,Oct 2026
RSW - RDU
Related info for your journey
Find useful and relevant information for your journey from Islip to Charleston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Santee
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Goose Creek
Edisto Beach
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Top 2 airlines flying from Islip to Charleston
Discover the top 2 airlines that operate flights from Islip to Charleston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$122 | Average$249 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$324 | Average$416 | FlexibilityNo cancel fee | On-time63% |