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$66+ Cheap flights from Islip, NY to Indianapolis (ISP - IND)

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — IND
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Islip to Indianapolis

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Indianapolis (IND). 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 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$176
(Kiwi.com)

One-way from

$66
(Booking.com)

Popular in

December

Cheapest in

February

Average price

$306
Provider with most accurate pricing for Islip Long Island-Indianapolis flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Indianapolis flights.
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From Islip Long Island to Indianapolis
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One-way flight from Islip Long Island to Indianapolis
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Highest demand for flights based on searches. 6% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Islip to Indianapolis

Cheapest flights from Islip to Indianapolis
Explore the most affordable flight options available from Islip to Indianapolis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Frontier deal was found by Cheapflights users on 10/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:47 pmISP - IND
1 stop6h 32mFrontier
Thu 11/1310:00 pmIND - ISP
1 stop12h 37mFrontier
Deal found 10/29$144
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Fri 11/144:58 pmISP - IND
1 stop16h 45mMultiple Airlines
Tue 11/185:05 amIND - ISP
2 stops29h 32mMultiple Airlines
Deal found 10/30$176
This Frontier deal was found by Cheapflights users on 10/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:47 pmISP - IND
1 stop6h 32mFrontier
Fri 11/1410:14 pmIND - ISP
1 stop12h 23mFrontier
Deal found 10/29$177
This Frontier deal was found by Cheapflights users on 10/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:47 pmISP - IND
1 stop6h 32mFrontier
Sun 11/910:21 pmIND - ISP
1 stop12h 16mFrontier
Deal found 10/29$196
This Frontier deal was found by Cheapflights users on 10/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:47 pmISP - IND
1 stop6h 32mFrontier
Sun 11/1610:21 pmIND - ISP
1 stop12h 16mFrontier
Deal found 10/29$197
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Tue 12/232:19 pmISP - IND
2 stops21h 14mMultiple Airlines
Mon 12/295:05 pmIND - ISP
1 stop18h 20mMultiple Airlines
Deal found 10/30$340
This Southwest deal was found by Cheapflights users on 10/30. 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.
Tue 12/235:40 amISP - IND
1 stop4h 25mSouthwest
Mon 12/297:30 pmIND - ISP
1 stop4h 25mSouthwest
Deal found 10/30$387

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Indianapolis 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 October 30, 2025.
Use the filters below to find and compare flights from Islip to Indianapolis that are best for you.

Fly from

Islip

Fly to

Indianapolis

Route

Depart

Return

Price

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 11/14

4:58 pm-9:43 am

1 stop16h 45m

Indianapolis

Tue 11/18

5:05 am-10:37 am

2 stops29h 32m

$176

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 12/23

5:40 am-10:05 am

1 stop4h 25m

Indianapolis

Mon 12/29

7:30 pm-11:55 pm

1 stop4h 25m

$387

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 11/13

6:37 pm-9:19 pm

1 stop26h 42m

$66

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 11/14

4:58 pm-8:41 pm

1 stop27h 43m

$88

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 11/14

4:58 pm-9:43 am

1 stop16h 45m

$95

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 11/8

4:58 pm-8:44 am

1 stop15h 46m

$107

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 11/13

11:40 am-9:19 pm

2 stops33h 39m

$123

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 11/8

8:45 pm-11:22 am

3 stops38h 37m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Compare providers for flights from Islip to Indianapolis

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 Indianapolis in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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-Indianapolis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-Indianapolis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-Indianapolis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Indianapolis flights, Cheapflights users trust eDreams the most. eDreams 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-Indianapolis 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 Indianapolis

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

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

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $46). Flying from Islip, New York to Indianapolis in September is currently the most expensive (average of $95). 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.

Reviews of airlines servicing Indianapolis

Get insights into the airlines that provide service to Indianapolis. 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 Indianapolis. Reviews last updated October 30, 2025.
See what other customers who have flown with Southwest from Islip to Indianapolis 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
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Islip to Indianapolis. 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 Islip, New York to Indianapolis?

    Departing from Islip, New York to Indianapolis will take you 4h 25m. There are 699 mi between Islip, New York and Indianapolis.

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

    Southwest, at $271, was found to be the cheapest airline from Islip, New York to Indianapolis..

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $46). Flying from Islip, New York to Indianapolis in September is currently the most expensive (average of $95). 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 Indianapolis?

Book flights to Indianapolis if you plan to visit one of these locations
Terre Haute
Muncie
Noblesville
Fishers
Greenwood
Anderson
Kokomo
Bloomington
Plainfield
Franklin
Carmel
Crawfordsville
Speedway

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Alternative routes for Islip to Indianapolis

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

Discover the top airline that operate flights from Islip to Indianapolis. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$271Average$336FlexibilityNo cancel feeOn-time63%

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