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Islip

$111+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ISP
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
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 August 1, 2026.

This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:20 pm
IND
-
ISP
1 stop19h 38m
Frontier
Mon 9/215:43 pm
ISP
-
IND
1 stop16h 42m
Frontier
Deal found 7/30$252
This Frontier deal was found by Cheapflights users on 7/31. 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 8/209:59 pm
IND
-
ISP
1 stop11h 54m
Frontier
Mon 8/2410:57 am
ISP
-
IND
1 stop7h 41m
Frontier
Deal found 7/31$314
This Frontier deal was found by Cheapflights users on 7/31. 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 8/209:59 pm
IND
-
ISP
1 stop11h 54m
Frontier
Sun 8/2310:57 am
ISP
-
IND
1 stop10h 17m
Frontier
Deal found 7/31$334
This Southwest deal was found by Cheapflights users on 7/30. 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.
Fri 9/111:15 pm
IND
-
ISP
2 stops8h 55m
Southwest
Mon 9/216:10 am
ISP
-
IND
2 stops8h 40m
Southwest
Deal found 7/30$348
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Wed 8/197:33 pm
IND
-
ISP
1 stop14h 20m
Frontier
Sun 8/2310:57 am
ISP
-
IND
2 stops30h 29m
Frontier
Deal found 7/30$350
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sat 8/227:33 pm
IND
-
ISP
1 stop14h 20m
Frontier
Wed 8/2610:57 am
ISP
-
IND
1 stop7h 41m
Frontier
Deal found 7/31$360
This Southwest deal was found by Cheapflights users on 7/31. 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 8/2212:15 pm
IND
-
ISP
1 stop7h 15m
Southwest
Wed 8/263:20 pm
ISP
-
IND
2 stops7h 25m
Southwest
Deal found 7/31$381
This Southwest deal was found by Cheapflights users on 7/30. 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.
Wed 8/196:50 am
IND
-
ISP
2 stops8h 05m
Southwest
Sun 8/2310:20 am
ISP
-
IND
2 stops8h 10m
Southwest
Deal found 7/30$487
This Southwest deal was found by Cheapflights users on 7/27. 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 8/125:50 am
IND
-
ISP
1 stop6h 20m
Southwest
Sun 8/166:20 am
ISP
-
IND
1 stop6h 30m
Southwest
Deal found 7/27$513

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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$252
(Trip.com)

One-way from

$111
(Frontier)

Popular in

June

Cheapest in

January

Average price

$269
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
One-way flight from Indianapolis to Islip Long Island
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 1, 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

Fri 9/11

9:20 pm-4:58 pm

1 stop19h 38m

Islip Long Island

Mon 9/21

5:43 pm-10:25 am

1 stop16h 42m

$252

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 8/20

9:59 pm-9:53 am

1 stop11h 54m

Islip Long Island

Sun 8/23

10:57 am-9:14 pm

1 stop10h 17m

$334

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 9/11

1:15 pm-10:10 pm

2 stops8h 55m

Islip Long Island

Mon 9/21

6:10 am-2:50 pm

2 stops8h 40m

$348

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sat 8/22

7:33 pm-9:53 am

1 stop14h 20m

Islip Long Island

Wed 8/26

10:57 am-6:38 pm

1 stop7h 41m

$360

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sat 8/22

12:15 pm-7:30 pm

1 stop7h 15m

Islip Long Island

Wed 8/26

3:20 pm-10:45 pm

2 stops7h 25m

$381

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Wed 8/19

6:50 am-2:55 pm

2 stops8h 05m

Islip Long Island

Sun 8/23

10:20 am-6:30 pm

2 stops8h 10m

$487
Quickest round-trip

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Wed 8/12

5:50 am-12:10 pm

1 stop6h 20m

Islip Long Island

Sun 8/16

6:20 am-12:50 pm

1 stop6h 30m

$513

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sun 11/22

6:00 am-9:59 pm

1 stop15h 59m

Islip Long Island

Sun 11/29

9:40 am-9:34 pm

1 stop11h 54m

$784
Cheapest one-way

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Mon 9/21

7:48 pm-11:20 am

2 stops15h 32m

$122

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Mon 9/21

9:20 pm-4:58 pm

1 stop19h 38m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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 August.
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 8h 55m. Frontier provides one of the quickest options available for as low as $348. The distance from Indianapolis to Islip, New York is about 699 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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