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$160+ 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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — IND
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
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Cheap 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 March 16, 2026.

This Frontier deal was found by Cheapflights users on 3/12. 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.
Thu 4/164:07 pm
ISP
-
IND
1 stop15h 31m
Frontier
Wed 4/2212:07 pm
IND
-
ISP
1 stop21h 26m
Frontier
Deal found 3/12$202
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/1511:50 am
ISP
-
IND
2 stops23h 42m
Multiple Airlines
Wed 4/228:00 am
IND
-
ISP
1 stop25h 33m
Multiple Airlines
Deal found 3/15$285
This Southwest deal was found by Cheapflights users on 3/12. 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.
Thu 4/164:30 pm
ISP
-
IND
1 stop6h 30m
Southwest
Wed 4/225:30 am
IND
-
ISP
2 stops8h 20m
Southwest
Deal found 3/12$320
This Southwest deal was found by Cheapflights users on 3/15. 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 4/156:30 am
ISP
-
IND
1 stop6h 15m
Southwest
Wed 4/225:50 am
IND
-
ISP
1 stop6h 05m
Southwest
Deal found 3/15$337
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Thu 5/711:00 am
ISP
-
IND
1 stop11h 08m
Multiple Airlines
Mon 5/1112:14 pm
IND
-
ISP
2 stops28h 33m
Multiple Airlines
Deal found 3/15$351
This Southwest deal was found by Cheapflights users on 3/13. 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.
Fri 5/224:30 pm
ISP
-
IND
1 stop6h 30m
Southwest
Tue 5/265:30 am
IND
-
ISP
2 stops8h 20m
Southwest
Deal found 3/13$412
This Southwest deal was found by Cheapflights users on 3/15. 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.
Thu 5/74:30 pm
ISP
-
IND
2 stops7h 25m
Southwest
Mon 5/116:50 am
IND
-
ISP
2 stops9h 40m
Southwest
Deal found 3/15$437
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/272:31 pm
ISP
-
IND
2 stops8h 44m
Multiple Airlines
Tue 3/315:08 pm
IND
-
ISP
1 stop26h 51m
Multiple Airlines
Deal found 3/11$463

Find 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 March 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$202
(Frontier)

One-way from

$160
(Mytrip)

Popular in

May

Cheapest in

February

Average price

$283
Provider with most accurate pricing for Islip Long Island-Indianapolis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Indianapolis flights.
Search Deals
From Islip Long Island to Indianapolis
Search Deals
One-way flight from Islip Long Island to Indianapolis
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 16, 2026.
Use the filters below to find and compare flights from Islip to Indianapolis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 5/7

6:00 am-11:05 am

1 stop5h 05m

Indianapolis

Mon 5/11

2:25 pm-8:25 pm

1 stop6h 00m

$347

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 5/7

11:00 am-10:08 pm

1 stop11h 08m

Indianapolis

Mon 5/11

12:14 pm-4:47 pm

2 stops28h 33m

$351

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 4/16

4:30 pm-11:55 pm

2 stops7h 25m

Indianapolis

Wed 4/22

5:30 am-1:50 pm

2 stops8h 20m

$355

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 5/22

4:30 pm-11:00 pm

1 stop6h 30m

Indianapolis

Tue 5/26

5:30 am-1:50 pm

2 stops8h 20m

$412

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 3/27

2:31 pm-11:15 pm

2 stops8h 44m

Indianapolis

Tue 3/31

5:08 pm-7:59 pm

1 stop26h 51m

$463

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 3/27

6:00 am-4:00 pm

2 stops10h 00m

Indianapolis

Tue 3/31

1:20 pm-10:50 pm

2 stops9h 30m

$667

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 4/3

5:15 pm-12:55 am

1 stop7h 40m

Indianapolis

Mon 4/6

3:40 pm-11:55 pm

1 stop8h 15m

$727

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 4/5

7:59 pm-9:32 am

1 stop13h 33m

Indianapolis

Tue 4/7

10:42 am-4:58 pm

1 stop6h 16m

$829

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 4/11

11:15 am-6:24 pm

1 stop7h 09m

Indianapolis

Sun 4/12

11:02 am-7:04 pm

1 stop8h 02m

$1,118

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 4/9

8:36 pm-9:32 am

1 stop12h 56m

Indianapolis

Sun 4/12

11:02 am-7:04 pm

1 stop8h 02m

$1,118

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/15

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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-Indianapolis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Indianapolis flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, April is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $56). Flying from Islip, New York to Indianapolis in February is currently the most expensive (average of $109). 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 March 16, 2026.
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
4,318 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Southwest
8.0
Very good
4,318 reviews
Southwest
8.0
Very good
4,318 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

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 5h 05m. 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, April is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $56). Flying from Islip, New York to Indianapolis in February is currently the most expensive (average of $109). 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
Muncie
Terre Haute
Fishers
Noblesville
Greenwood
Plainfield
Mooresville
Anderson
Franklin
Carmel
Kokomo
Crawfordsville
Bloomington

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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 March 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$271Average$336FlexibilityNo cancel feeOn-time63%

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