$162+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ISP
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from Indianapolis to Islip 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 Indianapolis to Islip
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Cheapest flights from Indianapolis to IslipExplore 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 September 15, 2026.
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 September 15, 2026.
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:20 pm -
1 stop19h 38m
Sun 10/45:43 pm -
1 stop26h 48m
Deal found 9/13![Frontier logo]()
$320
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.
Fri 11/205:30 am -
1 stop6h 15m
Sat 11/2112:50 pm -
1 stop6h 35m
Deal found 9/15![Southwest logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:21 am -
2 stops23h 59m
Sat 10/35:43 pm -
1 stop15h 48m
Deal found 9/13![Multiple Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 9/13. 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.
Thu 10/227:50 pm -
1 stop3h 50m
Sun 10/255:40 am -
1 stop4h 20m
Deal found 9/13![Southwest logo]()
$444
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/99:06 pm -
1 stop20h 24m
Sun 10/116:25 pm -
1 stop16h 33m
Deal found 9/14![Frontier logo]()
$468
This Southwest deal was found by Cheapflights users on 9/13. 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.
Thu 10/86:45 am -
2 stops7h 45m
Sun 10/115:40 am -
1 stop4h 20m
Deal found 9/13![Southwest logo]()
$472
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:21 am -
1 stop6h 09m
Sun 10/116:25 pm -
1 stop16h 33m
Deal found 9/13![Frontier logo]()
$485
This Southwest deal was found by Cheapflights users on 9/13. 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.
Tue 9/295:50 am -
1 stop4h 25m
Sat 10/33:50 pm -
1 stop6h 25m
Deal found 9/13![Southwest logo]()
$497
Best flights from Indianapolis to IslipDiscover carefully curated flight deals from Indianapolis to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from Indianapolis to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
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.
Fri 11/205:30 am -
1 stop6h 15m
Sat 11/2112:50 pm -
1 stop6h 35m
Deal found 9/15![Southwest logo]()
$417
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:21 am -
1 stop6h 09m
Sun 10/116:25 pm -
1 stop16h 33m
Deal found 9/13![Frontier logo]()
$485
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.
Sat 11/216:15 pm -
2 stops16h 02m
Sat 11/284:43 pm -
1 stop17h 18m
Deal found 9/12![Multiple Airlines logo]()
$701
This Southwest deal was found by Cheapflights users on 9/13. 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.
Thu 10/86:45 am -
2 stops7h 45m
Sun 10/115:40 am -
1 stop4h 20m
Deal found 9/13![Southwest logo]()
$472
This Southwest deal was found by Cheapflights users on 9/13. 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.
Tue 9/295:50 am -
1 stop4h 25m
Sat 10/33:50 pm -
1 stop6h 25m
Deal found 9/13![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 10/26:45 am -
2 stops7h 45m
Sun 10/45:40 am -
1 stop4h 20m
Deal found 9/12![Southwest logo]()
$512
This Southwest deal was found by Cheapflights users on 9/13. 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.
Thu 10/225:20 am -
2 stops9h 10m
Sun 10/2511:00 am -
2 stops7h 45m
Deal found 9/13![Southwest logo]()
$531
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 11/248:00 pm -
1 stop12h 45m
Sat 11/281:35 pm -
1 stop10h 20m
Deal found 9/14![Southwest logo]()
$697
Last-minute flights from Indianapolis to IslipDiscover last-minute flight deals from Indianapolis to Islip. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from Indianapolis to Islip. Data last updated September 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:21 am -
2 stops23h 59m
Sat 10/35:43 pm -
1 stop15h 48m
Deal found 9/13![Multiple Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 9/13. 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.
Tue 9/295:50 am -
1 stop4h 25m
Sat 10/33:50 pm -
1 stop6h 25m
Deal found 9/13![Southwest logo]()
$497
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:20 pm -
1 stop19h 38m
Sun 10/45:43 pm -
1 stop26h 48m
Deal found 9/13![Frontier logo]()
$320
This Southwest deal was found by Cheapflights users on 9/13. 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 10/26:45 am -
2 stops7h 45m
Sun 10/45:40 am -
1 stop4h 20m
Deal found 9/13![Southwest logo]()
$502
This Southwest deal was found by Cheapflights users on 9/13. 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.
Thu 10/86:45 am -
2 stops7h 45m
Sun 10/115:40 am -
1 stop4h 20m
Deal found 9/13![Southwest logo]()
$472
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:21 am -
1 stop6h 09m
Sun 10/116:25 pm -
1 stop16h 33m
Deal found 9/13![Frontier logo]()
$485
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/99:06 pm -
1 stop20h 24m
Sun 10/116:25 pm -
1 stop16h 33m
Deal found 9/14![Frontier logo]()
$468
This Southwest deal was found by Cheapflights users on 9/13. 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.
Thu 10/227:50 pm -
1 stop3h 50m
Sun 10/255:40 am -
1 stop4h 20m
Deal found 9/13![Southwest logo]()
$444
One-way flights from Indianapolis to IslipSearch for one-way flight options from Indianapolis to Islip. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from Indianapolis to Islip. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
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 10/279:35 am -
1 stop6h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$162
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.
Fri 11/205:30 am -
1 stop6h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$209
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.
Sat 10/107:59 pm -
2 stops21h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$304
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.
Thu 10/811:21 am -
1 stop6h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$310
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.
Fri 10/911:53 am -
1 stop6h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$337
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.
Sat 11/2110:30 pm -
2 stops17h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$466
This Frontier deal was found by Cheapflights users on 9/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:30 pm -
2 stops17h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$526
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.
Sun 10/1111:21 am -
1 stop6h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$563
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 10/1211:53 am -
1 stop6h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$654
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 September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $320 (CheapOair) |
One-way from | $162 (Southwest) |
Popular in | September |
Cheapest in | January |
Average price | $355 |
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 7,457,451 searches. Data last updated September 15, 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
Cheapest round-trip
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Tue 10/27
9:35 am-3:45 pm
1 stop6h 10m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$162
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Fri 11/20
5:30 am-11:45 am
1 stop6h 15m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$209
Quickest round-trip
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Fri 10/9
11:53 am-6:00 pm
1 stop6h 07m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$337
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Fri 11/20
5:30 am-11:45 am
1 stop6h 15m
Islip Long Island
Sat 11/21
12:50 pm-7:25 pm
1 stop6h 35m
$417
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Sat 10/10
11:21 am-5:30 pm
1 stop6h 09m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$444
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Sat 11/21
10:30 pm-3:45 pm
2 stops17h 15m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$466
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Thu 10/8
6:45 am-2:30 pm
2 stops7h 45m
Islip Long Island
Sun 10/11
5:40 am-10:00 am
1 stop4h 20m
$472
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Thu 10/8
11:21 am-5:30 pm
1 stop6h 09m
Islip Long Island
Sun 10/11
6:25 pm-10:58 am
1 stop16h 33m
$485
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Tue 9/29
5:50 am-10:15 am
1 stop4h 25m
Islip Long Island
Sat 10/3
3:50 pm-10:15 pm
1 stop6h 25m
$497
IndianapolisIslip
IND Indianapolis - ISP Islip Long Island
INDISP
Indianapolis
Fri 10/2
6:45 am-2:30 pm
2 stops7h 45m
Islip Long Island
Sun 10/4
5:40 am-10:00 am
1 stop4h 20m
$512
Showing 1-10 of 15 resultsSorted 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 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 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.
IND-ISP
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.
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Book flights to Islip if you plan to visit one of these locationsRiverhead
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