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

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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — ISP
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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Cheapflights Tip: The best prices from Charleston to Islip Long Island are usually found in February or March, booked 41 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Charleston to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Charleston (CHS) to Islip (ISP). 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 July 2, 2025.

Round-trip from

$86
(CheapOair)

One-way from

$55
(CheapOair)

Popular in

November

Cheapest in

February

Average price

$271

Good round-trip deal

$133 or less

Good one-way deal

$86 or less
From Charleston to Islip Long Island
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One-way flight from Charleston to Islip Long Island
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Highest demand for flights based on searches. 19% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Charleston to Islip Long Island.
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Price to beat on a one-way flight from Charleston to Islip Long Island.
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Find flight deals from Charleston to Islip

Cheapest flights from Charleston to Islip
Explore the most affordable flight options available from Charleston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

This CheapOair deal was found by Cheapflights users on 7/1. 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 9/56:14 pmCHS - ISP
Nonstop1h 53mBreeze Airways
Mon 9/88:47 pmISP - CHS
Nonstop2h 12mBreeze Airways
Deal found 7/1$86
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 8/138:35 amCHS - ISP
1 stop6h 35mSouthwest
Wed 8/204:00 pmISP - CHS
1 stop4h 10mSouthwest
Deal found 7/2$237

Cheapflights Fare Finder

Customize your flight search to find flights from Charleston to Islip 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 July 2, 2025.
Use the filters below to find and compare flights from Charleston to Islip that are best for you.

Fly from

Charleston

Fly to

Islip

Route

Depart

Return

Price

CharlestonIslip

CHS - ISP

CHSISP

Charleston

Fri 9/5

6:14 pm-8:07 pm

Nonstop1h 53m

Islip Long Island

Mon 9/8

8:47 pm-10:59 pm

Nonstop2h 12m

$86

CharlestonIslip

CHS - ISP

CHSISP

Charleston

Wed 8/13

8:35 am-3:10 pm

1 stop6h 35m

Islip Long Island

Wed 8/20

4:00 pm-8:10 pm

1 stop4h 10m

$237

CharlestonIslip

CHS - ISP

CHSISP

Charleston

Mon 9/29

6:14 pm-8:07 pm

Nonstop1h 53m

$55

CharlestonIslip

CHS - ISP

CHSISP

Charleston

Wed 8/13

6:00 pm-10:05 pm

1 stop4h 05m

$119

CharlestonIslip

CHS - ISP

CHSISP

Charleston

Sun 7/20

10:53 am-10:04 am

3 stops23h 11m

$390

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Charleston to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Charleston 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 Charleston to Islip

How far ahead should I book a flight from Charleston to Islip, New York?

Use this chart to determine the optimal time to book a round-trip flight from Charleston to Islip. Price data was last updated on June 27, 2025.

To ensure you get the cheapest price possible for a flight from Charleston to Islip, New York, you should look to book at least 41 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Charleston to Islip, New York (average of $108). Flying from Charleston to Islip, New York in November is currently the most expensive (average of $213). 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 CHS to ISP?

Find hourly flight availability from Charleston to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2025.

One of the essential ways to save on airfare from Charleston to Islip, New York is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 36% on airfare.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated July 2, 2025.
Read reviews from past customers who have flown Breeze Airways and Southwest from Charleston to Islip. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
182 reviews

Boarding

8.4

Food

6.8

Overall

8.1

Crew

8.8

Entertainment

6.6

Comfort

8.2

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
182 reviews
Breeze Airways
8.1
Very good
182 reviews

Boarding

8.4

Food

6.8

Overall

8.1

Crew

8.8

Entertainment

6.6

Comfort

8.2

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
4,272 reviews
Breeze Airways
8.1
Very good
182 reviews

Boarding

8.4

Food

6.8

Overall

8.1

Crew

8.8

Entertainment

6.6

Comfort

8.2

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 Charleston to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Cheapflights users have booked flights from Charleston to Islip, New York round-trip from $86. Another airline that can offer you cheap pricing is Southwest. Breeze Airways is currently priced 58% below the average price you’ll pay for this route.

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

    On average you can expect to pay $121 for a flight from Charleston to Islip, New York. The cheapest flight overall is $84 while the most popular route, (Charleston - Islip Long Island) is currently priced at $86.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Charleston to Islip 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 Charleston to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from Charleston to Islip, New York (average of $108). Flying from Charleston to Islip, New York in November is currently the most expensive (average of $213). 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
Southampton
Riverhead

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Top 2 airlines flying from Charleston to Islip

Discover the top 2 airlines that operate flights from Charleston to Islip. 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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$91Average$197FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$256Average$386FlexibilityNo cancel feeOn-time63%

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