$174+ Cheap flights from Islip, NY to Indianapolis (ISP - IND)
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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — IND
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Indianapolis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Islip to Indianapolis
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Cheapest flights from Islip to IndianapolisExplore 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 September 17, 2026.
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 September 17, 2026.
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:43 pm -
1 stop16h 42m
Thu 10/110:26 am -
1 stop6h 32m
Deal found 9/15![Frontier logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 9/295:43 pm -
1 stop16h 42m
Sat 10/37:48 pm -
2 stops14h 29m
Deal found 9/14![Multiple Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 9/12. 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.
Fri 10/236:00 am -
1 stop3h 45m
Sun 10/255:00 pm -
1 stop6h 40m
Deal found 9/12![Southwest logo]()
$467
This Southwest deal was found by Cheapflights users on 9/14. 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 9/293:20 pm -
1 stop6h 25m
Sat 10/35:55 pm -
1 stop3h 50m
Deal found 9/14![Southwest logo]()
$497
This Southwest deal was found by Cheapflights users on 9/15. 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 11/245:35 am -
1 stop8h 40m
Sat 11/285:20 am -
1 stop6h 30m
Deal found 9/15![Southwest logo]()
$523
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Mon 9/2811:08 am -
2 stops9h 23m
Thu 10/110:26 am -
1 stop6h 32m
Deal found 9/15![Multiple Airlines logo]()
$590
This Southwest deal was found by Cheapflights users on 9/15. 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.
Mon 9/2810:20 am -
2 stops9h 50m
Thu 10/15:10 am -
2 stops9h 20m
Deal found 9/15![Southwest logo]()
$602
This CheapOair deal was found by Cheapflights users on 9/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:43 pm -
1 stop26h 48m
Thu 9/2410:26 am -
1 stop6h 32m
Deal found 9/16![Frontier logo]()
$640
Best flights from Islip to IndianapolisDiscover carefully curated flight deals from Islip to Indianapolis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Islip to Indianapolis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 9/295:43 pm -
1 stop16h 42m
Sat 10/37:48 pm -
2 stops14h 29m
Deal found 9/14![Multiple Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 9/12. 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.
Fri 10/236:00 am -
1 stop3h 45m
Sun 10/255:00 pm -
1 stop6h 40m
Deal found 9/12![Southwest logo]()
$467
This Southwest deal was found by Cheapflights users on 9/14. 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 9/293:20 pm -
1 stop6h 25m
Sat 10/35:55 pm -
1 stop3h 50m
Deal found 9/14![Southwest logo]()
$497
This Southwest deal was found by Cheapflights users on 9/15. 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 11/245:35 am -
1 stop8h 40m
Sat 11/285:20 am -
1 stop6h 30m
Deal found 9/15![Southwest logo]()
$523
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Mon 9/2811:08 am -
2 stops9h 23m
Thu 10/110:26 am -
1 stop6h 32m
Deal found 9/15![Multiple Airlines logo]()
$590
This Southwest deal was found by Cheapflights users on 9/15. 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.
Mon 9/2810:20 am -
2 stops9h 50m
Thu 10/15:10 am -
2 stops9h 20m
Deal found 9/15![Southwest logo]()
$602
Last-minute flights from Islip to IndianapolisDiscover last-minute flight deals from Islip to Indianapolis. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Indianapolis. Data last updated September 17, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:43 pm -
1 stop15h 48m
Mon 9/219:20 pm -
1 stop19h 38m
Deal found 9/15![Frontier logo]()
$680
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 9/1912:00 pm -
2 stops21h 31m
Mon 9/219:20 pm -
1 stop19h 38m
Deal found 9/15![Multiple Airlines logo]()
$737
This CheapOair deal was found by Cheapflights users on 9/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:43 pm -
1 stop26h 48m
Thu 9/2410:26 am -
1 stop6h 32m
Deal found 9/16![Frontier logo]()
$640
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:43 pm -
1 stop16h 42m
Thu 10/110:26 am -
1 stop6h 32m
Deal found 9/15![Frontier logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Mon 9/2811:08 am -
2 stops9h 23m
Thu 10/110:26 am -
1 stop6h 32m
Deal found 9/15![Multiple Airlines logo]()
$590
This Southwest deal was found by Cheapflights users on 9/15. 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.
Mon 9/2810:20 am -
2 stops9h 50m
Thu 10/15:10 am -
2 stops9h 20m
Deal found 9/15![Southwest logo]()
$602
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 9/295:43 pm -
1 stop16h 42m
Sat 10/37:48 pm -
2 stops14h 29m
Deal found 9/14![Multiple Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 9/14. 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 9/293:20 pm -
1 stop6h 25m
Sat 10/35:55 pm -
1 stop3h 50m
Deal found 9/14![Southwest logo]()
$497
This Southwest deal was found by Cheapflights users on 9/12. 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.
Fri 10/236:00 am -
1 stop3h 45m
Sun 10/255:00 pm -
1 stop6h 40m
Deal found 9/12![Southwest logo]()
$467
One-way flights from Islip to IndianapolisSearch for one-way flight options from Islip to Indianapolis. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Islip to Indianapolis. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:00 pm -
2 stops27h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$174
This CheapOair deal was found by Cheapflights users on 9/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:43 pm -
1 stop16h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$181
This Southwest deal was found by Cheapflights users on 9/15. 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.
Sun 10/255:40 am -
1 stop4h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$249
This Southwest deal was found by Cheapflights users on 9/15. 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 10/2412:20 pm -
1 stop3h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$299
This Southwest deal was found by Cheapflights users on 9/15. 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 9/2412:35 pm -
1 stop6h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sun 11/294:40 pm -
1 stop17h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$439
This Southwest deal was found by Cheapflights users on 9/14. 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 11/281:35 pm -
1 stop10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sun 11/296:49 pm -
3 stops40h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$479
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:55 pm -
2 stops20h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$540
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 September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $380 (Southwest) |
One-way from | $174 (Kiwi.com) |
Popular in | April |
Cheapest in | February |
Average price | $353 |
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 7,457,451 searches. Data last updated September 17, 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
Cheapest round-trip
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Tue 9/22
12:00 pm-3:18 pm
2 stops27h 18m
Indianapolis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$174
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Tue 9/22
5:43 pm-10:25 am
1 stop16h 42m
Indianapolis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$181
Quickest round-trip
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Sun 10/25
5:40 am-10:00 am
1 stop4h 20m
Indianapolis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$249
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Thu 9/24
12:35 pm-6:55 pm
1 stop6h 20m
Indianapolis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$395
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Sun 11/29
4:40 pm-10:01 am
1 stop17h 21m
Indianapolis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$439
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Sat 11/28
1:35 pm-11:55 pm
1 stop10h 20m
Indianapolis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$454
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Tue 9/29
5:43 pm-10:25 am
1 stop16h 42m
Indianapolis
Sat 10/3
7:48 pm-10:17 am
2 stops14h 29m
$458
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Fri 10/23
6:00 am-9:45 am
1 stop3h 45m
Indianapolis
Sun 10/25
5:00 pm-11:40 pm
1 stop6h 40m
$467
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Tue 9/29
3:20 pm-9:45 pm
1 stop6h 25m
Indianapolis
Sat 10/3
5:55 pm-9:45 pm
1 stop3h 50m
$497
IslipIndianapolis
ISP Islip Long Island - IND Indianapolis
ISPIND
Islip Long Island
Tue 11/24
5:35 am-2:15 pm
1 stop8h 40m
Indianapolis
Sat 11/28
5:20 am-11:50 am
1 stop6h 30m
$523
Showing 1-10 of 12 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
ISP-IND
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 Islip to Indianapolis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Indianapolis?
Book flights to Indianapolis if you plan to visit one of these locationsTerre Haute
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Westfield
Franklin
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Anderson
Carmel
Noblesville
Bloomington
Speedway
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