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$261+ Cheap flights from Indianapolis to Islip, NY (IND - ISP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ISP
Aug 19 — Aug 261
Wed 8/19
Wed 8/26
1 adult, Economy
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Cheap 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 July 20, 2026.

This Trip.com deal was found by Cheapflights users on 7/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:33 pm
IND
-
ISP
1 stop14h 20m
Frontier
Sat 8/2210:57 am
ISP
-
IND
1 stop7h 41m
Frontier
Deal found 7/15$261
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 10/1612:39 pm
IND
-
ISP
2 stops22h 41m
Multiple Airlines
Sun 10/254:13 pm
ISP
-
IND
1 stop25h 33m
Multiple Airlines
Deal found 7/16$319
This Southwest deal was found by Cheapflights users on 7/15. 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.
Sat 8/155:50 am
IND
-
ISP
1 stop6h 15m
Southwest
Tue 8/1810:55 am
ISP
-
IND
1 stop6h 00m
Southwest
Deal found 7/15$331
This Southwest deal was found by Cheapflights users on 7/15. 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.
Tue 8/1811:35 am
IND
-
ISP
2 stops9h 30m
Southwest
Sat 8/223:15 pm
ISP
-
IND
1 stop6h 20m
Southwest
Deal found 7/15$339
This Southwest deal was found by Cheapflights users on 7/16. 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 8/155:50 am
IND
-
ISP
1 stop6h 15m
Southwest
Mon 8/175:00 pm
ISP
-
IND
1 stop5h 55m
Southwest
Deal found 7/16$345
This Southwest deal was found by Cheapflights users on 7/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:10 am
IND
-
ISP
1 stop6h 45m
Southwest
Mon 9/286:10 am
ISP
-
IND
2 stops8h 40m
Southwest
Deal found 7/18$361
This Kiwi.com deal was found by Cheapflights users on 7/15. 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.
Fri 8/710:53 am
IND
-
ISP
1 stop23h 00m
Multiple Airlines
Fri 8/148:43 pm
ISP
-
IND
2 stops37h 20m
Multiple Airlines
Deal found 7/15$362
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:32 pm
IND
-
ISP
1 stop15h 21m
Frontier
Mon 8/107:46 pm
ISP
-
IND
2 stops39h 39m
Frontier
Deal found 7/17$381

Find 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 July 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$261
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$309
Provider with most accurate pricing for Indianapolis-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Indianapolis-Islip Long Island flights.
Search Deals
From Indianapolis to Islip Long Island
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 20, 2026.
Use the filters below to find and compare flights from Indianapolis to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sat 8/15

5:50 am-12:05 pm

1 stop6h 15m

Islip Long Island

Tue 8/18

6:05 am-12:20 pm

2 stops6h 15m

$336

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Tue 8/18

11:35 am-9:05 pm

2 stops9h 30m

Islip Long Island

Sat 8/22

3:15 pm-9:35 pm

1 stop6h 20m

$339

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sat 8/15

5:50 am-12:05 pm

1 stop6h 15m

Islip Long Island

Mon 8/17

5:00 pm-10:55 pm

1 stop5h 55m

$345

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 9/25

5:10 am-11:55 am

1 stop6h 45m

Islip Long Island

Mon 9/28

6:10 am-2:50 pm

2 stops8h 40m

$361

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 8/7

6:32 pm-9:53 am

1 stop15h 21m

Islip Long Island

Mon 8/10

7:46 pm-11:25 am

2 stops39h 39m

$381

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 10/16

5:10 am-2:30 pm

2 stops9h 20m

Islip Long Island

Sun 10/25

11:00 am-6:45 pm

2 stops7h 45m

$397
Quickest round-trip

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 8/7

5:25 am-9:40 am

1 stop4h 15m

Islip Long Island

Fri 8/14

4:05 pm-10:20 pm

1 stop6h 15m

$417
Cheapest one-way
Quickest one-way

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 11/20

12:10 pm-7:06 pm

1 stop6h 56m

$360

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Sorted by cheapest first

Compare providers for flights from Indianapolis to Islip

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

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, New York?

    A quick flight from Indianapolis to Islip, New York can take about 9h 30m. Southwest provides one of the quickest options available for as low as $339. The distance from Indianapolis to Islip, New York is about 699 mi.

  • 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.

See more FAQs

Traveling to a place near Islip?

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