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Islip

$80+ Cheap flights from Indianapolis to Islip, NY (IND - 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ISP
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
1 adult, Economy
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Cheap flight deals from Indianapolis to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Indianapolis (IND) 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 August 19, 2025.

Round-trip from

$148
(CheapOair)

One-way from

$80
(CheapOair)

Popular in

October

Cheapest in

January

Average price

$357
From Indianapolis to Islip Long Island
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One-way flight from Indianapolis to Islip Long Island
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Highest demand for flights based on searches. 21% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Indianapolis to Islip

Cheapest flights from Indianapolis to Islip
Explore the most affordable flight options available from Indianapolis to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2025.

This CheapOair deal was found by Cheapflights users on 8/19. 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 10/910:06 pmIND - ISP
1 stop12h 31mFrontier
Sun 10/129:47 pmISP - IND
1 stop23h 45mFrontier
Deal found 8/19$148
This CheapOair deal was found by Cheapflights users on 8/19. 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 9/126:21 pmIND - ISP
1 stop16h 34mFrontier
Sun 9/145:12 pmISP - IND
1 stop16h 35mFrontier
Deal found 8/19$150
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:58 pmIND - ISP
1 stop15h 42mFrontier
Sun 9/285:12 pmISP - IND
1 stop16h 35mFrontier
Deal found 8/17$167
This CheapOair deal was found by Cheapflights users on 8/18. 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 9/156:05 pmIND - ISP
1 stop16h 35mFrontier
Thu 9/1811:40 amISP - IND
1 stop6h 18mFrontier
Deal found 8/18$181
This CheapOair deal was found by Cheapflights users on 8/17. 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.
Mon 10/66:05 pmIND - ISP
1 stop26h 37mFrontier
Thu 10/99:37 pmISP - IND
1 stop10h 24mFrontier
Deal found 8/17$184
This CheapOair deal was found by Cheapflights users on 8/17. 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.
Sat 9/206:26 pmIND - ISP
1 stop16h 14mFrontier
Sun 9/215:12 pmISP - IND
1 stop16h 35mFrontier
Deal found 8/17$188
This CheapOair deal was found by Cheapflights users on 8/17. 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.
Fri 9/196:21 pmIND - ISP
1 stop16h 34mFrontier
Sat 9/275:05 pmISP - IND
1 stop23h 32mFrontier
Deal found 8/17$189
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:45 amIND - ISP
1 stop28h 55mMultiple Airlines
Sat 9/205:05 pmISP - IND
1 stop16h 13mMultiple Airlines
Deal found 8/18$229
This CheapOair deal was found by Cheapflights users on 8/17. 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.
Fri 8/225:48 pmIND - ISP
1 stop22h 23mFrontier
Sun 8/249:01 pmISP - IND
1 stop11h 33mFrontier
Deal found 8/17$242

Cheapflights Fare Finder

 
Customize your flight search to find flights from Indianapolis 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 August 19, 2025.
Use the filters below to find and compare flights from Indianapolis to Islip that are best for you.

Fly from

Indianapolis

Fly to

Islip

Route

Depart

Return

Price

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 10/9

10:06 pm-10:37 am

1 stop12h 31m

Islip Long Island

Sun 10/12

9:47 pm-12:17 pm

1 stop14h 30m

$148

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 9/12

6:21 pm-10:55 am

1 stop16h 34m

Islip Long Island

Sun 9/14

5:12 pm-9:47 am

1 stop16h 35m

$150

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 10/2

6:53 pm-10:40 am

1 stop15h 47m

Islip Long Island

Sun 10/5

5:12 pm-9:47 am

1 stop16h 35m

$150

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 9/4

6:58 pm-10:40 am

1 stop15h 42m

Islip Long Island

Sun 9/7

9:49 am-9:47 am

1 stop23h 58m

$167

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 9/25

6:58 pm-10:40 am

1 stop15h 42m

Islip Long Island

Sun 9/28

5:12 pm-9:47 am

1 stop16h 35m

$167

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Mon 9/15

6:05 pm-10:40 am

1 stop16h 35m

Islip Long Island

Thu 9/18

11:40 am-5:58 pm

1 stop6h 18m

$181

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Mon 10/6

6:05 pm-8:42 pm

1 stop26h 37m

Islip Long Island

Thu 10/9

9:37 pm-8:01 am

1 stop10h 24m

$184

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sat 9/20

6:26 pm-10:40 am

1 stop16h 14m

Islip Long Island

Sun 9/21

5:12 pm-9:47 am

1 stop16h 35m

$188

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Mon 10/6

6:05 pm-8:42 pm

1 stop26h 37m

Islip Long Island

Sat 10/11

4:58 pm-8:44 am

1 stop15h 46m

$189

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 9/12

6:21 pm-10:55 am

1 stop16h 34m

$80

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 20 results
1
2

Best time to book a flight from Indianapolis to Islip

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

What is the cheapest month to book a flight from Indianapolis to Islip?

Currently, January is the cheapest month in which you can book a flight from Indianapolis to Islip (average of $108). Flying from Indianapolis to Islip 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 IND to ISP?

Find hourly flight availability from Indianapolis 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 August 19, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 28% on flights from Indianapolis to Islip by exploring options for tickets in the morning.

How much does it cost to fly round-trip from Indianapolis to Islip?

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 August 19, 2025.
See what other customers who have flown with Southwest from Indianapolis to Islip have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Indianapolis to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Indianapolis to Islip?

    Airlines like Frontier fly from Indianapolis to Islip in about 12h 31m. The time it takes to get you to your destination can typically vary by up to . There are 699 mi between Indianapolis and Islip.

  • What is the cheapest airline to fly from Indianapolis to Islip round-trip?

    According to our current data, Southwest ($280), offers the cheapest pricing from Indianapolis to Islip. This flight start at 32% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Indianapolis 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 Indianapolis to Islip?

    Currently, January is the cheapest month in which you can book a flight from Indianapolis to Islip (average of $108). Flying from Indianapolis to Islip 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 Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
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Alternative routes for Indianapolis to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Indianapolis to Islip

Discover the top airline that operate flights from Indianapolis 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 August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$280Average$386FlexibilityNo cancel feeOn-time63%

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