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$55+ Cheap flights from Islip, NY to Charleston (ISP - CHS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — CHS
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Find cheap flights from Islip to Charleston with Cheapflights

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Cheapflights Tip: The best prices from Islip Long Island to Charleston are usually found in January or May, booked 18 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Islip to Charleston

Cheapest flights from Islip to Charleston
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 January 21, 2026.

This Breeze Airways deal was found by Cheapflights users on 1/19. 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 Breeze Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/17:26 pm
ISP
-
CHS
1 stop3h 29m
Breeze Airways
Thu 2/53:31 pm
CHS
-
ISP
1 stop3h 15m
Breeze Airways
Deal found 1/19$104
This CheapOair deal was found by Cheapflights users on 1/19. 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 2/98:45 pm
ISP
-
CHS
Nonstop2h 12m
Breeze Airways
Thu 2/123:31 pm
CHS
-
ISP
1 stop3h 15m
Breeze Airways
Deal found 1/19$109
This CheapOair deal was found by Cheapflights users on 1/20. 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 2/68:45 pm
ISP
-
CHS
Nonstop2h 12m
Breeze Airways
Mon 2/96:11 pm
CHS
-
ISP
Nonstop1h 54m
Breeze Airways
Deal found 1/20$122
This CheapOair deal was found by Cheapflights users on 1/20. 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.
Thu 2/197:26 pm
ISP
-
CHS
1 stop3h 29m
Breeze Airways
Thu 2/263:31 pm
CHS
-
ISP
1 stop3h 15m
Breeze Airways
Deal found 1/20$126
This Priceline deal was found by Cheapflights users on 1/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:45 pm
ISP
-
CHS
Nonstop2h 12m
Breeze Airways
Mon 3/96:11 pm
CHS
-
ISP
Nonstop1h 54m
Breeze Airways
Deal found 1/19$127
This Breeze Airways deal was found by Cheapflights users on 1/19. 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 Breeze Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/308:45 pm
ISP
-
CHS
Nonstop2h 12m
Breeze Airways
Mon 2/26:11 pm
CHS
-
ISP
Nonstop1h 54m
Breeze Airways
Deal found 1/19$128
This CheapOair deal was found by Cheapflights users on 1/21. 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 3/17:26 pm
ISP
-
CHS
1 stop3h 29m
Breeze Airways
Fri 3/66:11 pm
CHS
-
ISP
Nonstop1h 54m
Breeze Airways
Deal found 1/21$131
This CheapOair deal was found by Cheapflights users on 1/20. 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 6/58:43 pm
ISP
-
CHS
Nonstop2h 08m
Breeze Airways
Mon 6/86:06 pm
CHS
-
ISP
Nonstop1h 57m
Breeze Airways
Deal found 1/20$137
This CheapOair deal was found by Cheapflights users on 1/20. 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.
Mon 3/238:45 pm
ISP
-
CHS
Nonstop2h 12m
Breeze Airways
Thu 3/263:31 pm
CHS
-
ISP
1 stop3h 15m
Breeze Airways
Deal found 1/20$140

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 January 21, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$104
(Breeze Airways)

One-way from

$55
(Booking.com)

Popular in

April

Cheapest in

January

Average price

$111

Good round-trip deal

$108 or less
Provider with most accurate pricing for Islip Long Island-Charleston flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Charleston flights.
Search Deals
From Islip Long Island to Charleston
Search Deals
One-way flight from Islip Long Island to Charleston
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Islip Long Island to Charleston.
Search Deals

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 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from Islip to Charleston that are best for you.

Fly from

Islip

Fly to

Charleston

Route

Depart

Return

Price

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Sun 2/1

7:26 pm-10:55 pm

1 stop3h 29m

Charleston

Thu 2/5

3:31 pm-6:46 pm

1 stop3h 15m

$116

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 2/6

8:45 pm-10:57 pm

Nonstop2h 12m

Charleston

Mon 2/9

6:11 pm-8:05 pm

Nonstop1h 54m

$122

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Thu 2/19

7:26 pm-10:55 pm

1 stop3h 29m

Charleston

Thu 2/26

3:31 pm-6:46 pm

1 stop3h 15m

$126

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 2/20

8:45 pm-10:57 pm

Nonstop2h 12m

Charleston

Mon 2/23

6:11 pm-8:05 pm

Nonstop1h 54m

$133

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 3/6

8:45 pm-10:57 pm

Nonstop2h 12m

Charleston

Mon 3/9

6:11 pm-8:05 pm

Nonstop1h 54m

$137

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 2/27

8:45 pm-10:57 pm

Nonstop2h 12m

Charleston

Mon 3/2

6:11 pm-8:05 pm

Nonstop1h 54m

$138

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Thu 3/5

7:26 pm-10:55 pm

1 stop3h 29m

Charleston

Mon 3/9

6:11 pm-8:05 pm

Nonstop1h 54m

$142

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 5/29

8:43 pm-10:51 pm

Nonstop2h 08m

Charleston

Mon 6/1

6:06 pm-8:03 pm

Nonstop1h 57m

$174

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Thu 2/26

7:26 pm-10:55 pm

1 stop3h 29m

Charleston

Mon 3/2

6:11 pm-8:05 pm

Nonstop1h 54m

$175

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 2/20

8:45 pm-10:57 pm

Nonstop2h 12m

$55

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 19 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Charleston flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Islip, New York-Charleston flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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.
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?

Use this chart to determine the optimal time to book a round-trip flight from Islip to Charleston. Price data was last updated on January 16, 2026.

The best time to book flights from Islip, New York to Charleston is 18 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, September is the cheapest month in which you can book a flight from Islip, New York to Charleston (average of $50). Flying from Islip, New York to Charleston in July is currently the most expensive (average of $78). 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 January 21, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 46% on flights from Islip, New York to Charleston by exploring options for tickets in the afternoon.

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 January 21, 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.
Breeze Airways
8.2
Very good
259 reviews

Crew

8.7

Food

6.7

Entertainment

6.7

Boarding

8.3

Comfort

8.2

Overall

8.2

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Breeze Airways
8.2
Very good
259 reviews
Breeze Airways
8.2
Very good
259 reviews

Crew

8.7

Food

6.7

Entertainment

6.7

Boarding

8.3

Comfort

8.2

Overall

8.2

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Southwest
8.0
Very good
4,266 reviews
Breeze Airways
8.2
Very good
259 reviews

Crew

8.7

Food

6.7

Entertainment

6.7

Boarding

8.3

Comfort

8.2

Overall

8.2

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.

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.

  • How popular is this Islip, New York to Charleston flight route?

    The Islip Long Island to Charleston flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Islip, New York to Charleston?

    Airlines like Breeze Airways fly from Islip, New York to Charleston in about 3h 29m. The time it takes to get you to your destination can typically vary by up to . The distance between Islip, New York and Charleston is about 666 mi.

  • What are the cheapest airlines flying from Islip, New York to Charleston round-trip?

    According to our current data, Breeze Airways ($93), and Southwest ($296) offers the cheapest pricing from Islip, New York to Charleston. Breeze Airways is priced at 54% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Islip, New York to Charleston?

    Looking for the cheapest flight from Islip, New York to Charleston? While on average our users pay $182, our data indicates the cheapest price to be $96. The most popular route (Islip Long Island - Charleston), is priced around $122.

  • Can I find deals for flights from Islip to Charleston that include hotel bookings?

    Yes. In addition to deals on Islip to Charleston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Charleston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Charleston.

  • Can I find deals for business class flights from Islip to Charleston?

    Yes. Cheapflights offers flight deals from Islip to Charleston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Charleston?

    Currently, September is the cheapest month in which you can book a flight from Islip, New York to Charleston (average of $50). Flying from Islip, New York to Charleston in July is currently the most expensive (average of $78). 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.

See more FAQs

Traveling to a place near Charleston?

Book flights to Charleston if you plan to visit one of these locations
North Charleston
Santee
Summerville
Walterboro
Isle of Palms
Mount Pleasant
Edisto Beach

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Islip to Charleston

See prices for flight routes from nearby airports that may be better suited for you.
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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 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$93Average$196FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$296Average$491FlexibilityNo cancel feeOn-time63%

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