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$41+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — CHS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Islip Long Island to Charleston are usually found in January or February, booked 40 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap 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 June 12, 2025.

Round-trip from

$80
(Kiwi.com)

One-way from

$41
(Priceline)

Popular in

April

Cheapest in

January

Average price

$192

Good round-trip deal

$111 or less

Good one-way deal

$135 or less
From Islip Long Island to Charleston
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One-way flight from Islip Long Island to Charleston
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Highest demand for flights based on searches. 8% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Islip Long Island to Charleston.
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Price to beat on a one-way flight from Islip Long Island to Charleston.
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Find 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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Sat 8/302:12 pmISP - CHS
Nonstop2h 07mBreeze Airways
Fri 9/56:14 pmCHS - ISP
Nonstop1h 53mBreeze Airways
Deal found 6/10$80
This Southwest deal was found by Cheapflights users on 6/11. 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 8/305:40 amISP - CHS
1 stop4h 25mSouthwest
Fri 9/56:40 pmCHS - ISP
1 stop4h 05mSouthwest
Deal found 6/11$331
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:47 pmISP - CHS
Nonstop2h 12mMultiple Airlines
Sun 11/23:31 pmCHS - ISP
2 stops28h 22mMultiple Airlines
Deal found 6/10$388

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 June 12, 2025.
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

Sat 8/30

2:12 pm-4:19 pm

Nonstop2h 07m

Charleston

Fri 9/5

6:14 pm-8:07 pm

Nonstop1h 53m

$80

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Mon 11/10

11:05 am-10:55 pm

2 stops11h 50m

Charleston

Thu 11/13

8:10 pm-11:50 pm

1 stop3h 40m

$328

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 10/31

8:47 pm-10:59 pm

Nonstop2h 12m

Charleston

Sun 11/2

3:31 pm-7:53 pm

2 stops28h 22m

$388

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Mon 9/15

8:47 pm-10:59 pm

Nonstop2h 12m

$41

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Wed 7/16

4:40 pm-9:05 pm

1 stop4h 25m

$159

IslipCharleston

ISP - CHS

ISPCHS

Islip Long Island

Fri 7/4

3:59 pm-10:29 pm

3 stops30h 30m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 June 9, 2025.

The best time to book flights from Islip, New York to Charleston is 40 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, August is the cheapest month in which you can book a flight from Islip, New York to Charleston (average of $217). Flying from Islip, New York to Charleston in March is currently the most expensive (average of $335). 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 June 12, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 31% on flights from Islip, New York to Charleston by exploring options for tickets in the morning.

What is the cheapest day to fly from Islip, New York to Charleston?

Use this chart to determine the cheapest time to fly round-trip from Islip to Charleston. Price data was last updated on June 8, 2025.

Travelers seeking maximum savings on their Islip, New York to Charleston flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Charleston by month

Plan your trip to Charleston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Charleston ranges from 2.4 - 7.2 inches per month. August is typically the wettest month, when rainfall can reach 7.2 in. November is typically the driest time to visit Charleston when rainfall is around 2.4 in.

Temperature in Charleston by month

Plan your trip to Charleston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Charleston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 June 12, 2025.
See what other customers who have flown with Breeze Airways and Southwest from Islip to Charleston have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.7

Boarding

8.3

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.7

Boarding

8.3

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,287 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.7

Boarding

8.3

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

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.

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

    According to our current data, Breeze Airways ($80), and Southwest ($331) offers the cheapest pricing from Islip, New York to Charleston. Breeze Airways is priced at 63% 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 $144, our data indicates the cheapest price to be $79. The most popular route (Islip Long Island - Charleston), is priced around $80.

  • 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, August is the cheapest month in which you can book a flight from Islip, New York to Charleston (average of $217). Flying from Islip, New York to Charleston in March is currently the most expensive (average of $335). 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 Islip?

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

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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 3 airlines flying from Islip to Charleston

Discover the top 3 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$94Average$232FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$97Average$162FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$270Average$457FlexibilityNo cancel feeOn-time63%

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