HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$135+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ISP
Apr 1 — Apr 81
Wed 4/1
Wed 4/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

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 March 2, 2026.

This CheapOair deal was found by Cheapflights users on 3/2. 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 6/119:25 am
IND
-
ISP
1 stop23h 43m
Frontier
Sun 6/1410:03 am
ISP
-
IND
1 stop22h 27m
Frontier
Deal found 3/2$270
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 8/69:25 am
IND
-
ISP
1 stop23h 43m
Frontier
Mon 8/1010:03 am
ISP
-
IND
1 stop22h 27m
Frontier
Deal found 2/26$278
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 4/86:00 am
IND
-
ISP
2 stops32h 04m
Multiple Airlines
Mon 4/137:34 pm
ISP
-
IND
1 stop15h 37m
Multiple Airlines
Deal found 2/26$320
This Southwest deal was found by Cheapflights users on 2/26. 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 4/85:50 am
IND
-
ISP
1 stop8h 00m
Southwest
Mon 4/138:35 am
ISP
-
IND
1 stop6h 50m
Southwest
Deal found 2/26$330
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 8/69:25 am
IND
-
ISP
1 stop23h 43m
Multiple Airlines
Mon 8/102:28 pm
ISP
-
IND
2 stops18h 02m
Multiple Airlines
Deal found 2/26$345
This Southwest deal was found by Cheapflights users on 2/26. 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 3/192:00 pm
IND
-
ISP
1 stop9h 55m
Southwest
Tue 3/245:25 pm
ISP
-
IND
1 stop6h 30m
Southwest
Deal found 2/26$361
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 3/115:15 pm
IND
-
ISP
1 stop22h 58m
Frontier
Sun 3/154:34 pm
ISP
-
IND
1 stop16h 50m
Frontier
Deal found 2/26$377
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 3/53:12 pm
IND
-
ISP
2 stops22h 19m
Multiple Airlines
Sun 3/85:08 pm
ISP
-
IND
1 stop15h 24m
Multiple Airlines
Deal found 2/26$380
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 3/115:15 pm
IND
-
ISP
1 stop22h 58m
Multiple Airlines
Sun 3/154:34 pm
ISP
-
IND
2 stops25h 17m
Multiple Airlines
Deal found 2/26$390

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 March 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$270
(CheapOair)

One-way from

$135
(Frontier)

Popular in

November

Cheapest in

January

Average price

$249
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 ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 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 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 March 2, 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

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 6/11

9:25 am-9:08 am

1 stop23h 43m

Islip Long Island

Sun 6/14

10:03 am-8:30 am

1 stop22h 27m

$270

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Wed 4/8

6:40 am-1:50 pm

2 stops7h 10m

Islip Long Island

Mon 4/13

12:30 pm-10:00 pm

2 stops9h 30m

$335

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 3/19

2:00 pm-11:55 pm

1 stop9h 55m

Islip Long Island

Tue 3/24

5:25 pm-11:55 pm

1 stop6h 30m

$361

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 8/6

7:20 am-4:25 pm

2 stops9h 05m

Islip Long Island

Mon 8/10

10:20 am-8:10 pm

2 stops9h 50m

$377

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sun 3/15

8:05 pm-11:50 pm

1 stop3h 45m

Islip Long Island

Thu 3/19

5:55 pm-12:15 am

1 stop6h 20m

$457

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 3/12

9:07 am-4:13 pm

1 stop7h 06m

Islip Long Island

Mon 3/16

1:22 pm-8:39 am

1 stop19h 17m

$465

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 3/13

9:45 am-4:30 pm

1 stop6h 45m

Islip Long Island

Sun 3/22

5:55 pm-12:50 am

1 stop6h 55m

$694

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sun 4/5

11:02 am-7:04 pm

1 stop8h 02m

$135

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Thu 3/12

9:07 am-4:13 pm

1 stop7h 06m

$380

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sun 3/22

9:07 am-3:49 pm

1 stop6h 42m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

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 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 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.

Cheapflights Insights

Everything you need to know about your flight from Indianapolis to Islip

What is the cheapest month to book a flight from Indianapolis to Islip, New York?

Currently, March is the cheapest month in which you can book a flight from Indianapolis to Islip, New York (average of $52). Flying from Indianapolis to Islip, New York in July is currently the most expensive (average of $88). 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 Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated March 2, 2026.
See what other customers who have flown with Southwest from Indianapolis to Islip 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
4,306 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2026

DEN - BDL

Weird they cancelled a direct and rerouted me on a connecting flight to get in 10 hours later. What was the point? Crew and flight were great, but not sure what's going on with Southwest.
Southwest
8.0
Very good
4,306 reviews
Southwest
8.0
Very good
4,306 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2026

DEN - BDL

Weird they cancelled a direct and rerouted me on a connecting flight to get in 10 hours later. What was the point? Crew and flight were great, but not sure what's going on with Southwest.

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 7h 10m. Frontier provides one of the quickest options available for as low as $335. 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.

  • What is the cheapest airline to fly from Indianapolis to Islip, New York round-trip?

    Flying on Southwest is currently your cheapest option to Islip, New York, with prices starting at $280.

  • 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.

  • What is the cheapest month to book a flight from Indianapolis to Islip, New York?

    Currently, March is the cheapest month in which you can book a flight from Indianapolis to Islip, New York (average of $52). Flying from Indianapolis to Islip, New York in July is currently the most expensive (average of $88). 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 Islip?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Indianapolis to Islip

Discover the top airline that operate flights from Indianapolis to Islip. 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 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$280Average$366FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.