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Islip

$152+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ISP
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This CheapOair deal was found by Cheapflights users on 12/11. 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 12/225:05 pmIND - ISP
1 stop18h 20mFrontier
Mon 12/298:35 pmISP - IND
1 stop19h 36mFrontier
Deal found 12/11$473
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 12/1211:31 amIND - ISP
1 stop21h 42mMultiple Airlines
Mon 12/152:25 pmISP - IND
2 stops17h 18mMultiple Airlines
Deal found 12/10$484
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/279:43 pmIND - ISP
1 stop15h 26mMultiple Airlines
Wed 12/318:21 pmISP - IND
2 stops34h 52mMultiple Airlines
Deal found 12/11$582
This CheapOair deal was found by Cheapflights users on 12/10. 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 12/1911:25 amIND - ISP
1 stop8h 15mFrontier
Sun 1/118:40 pmISP - IND
1 stop16h 06mFrontier
Deal found 12/10$587
This CheapOair deal was found by Cheapflights users on 12/11. 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 12/235:06 pmIND - ISP
1 stop23h 31mFrontier
Mon 12/298:35 pmISP - IND
1 stop19h 36mFrontier
Deal found 12/11$662
This Southwest deal was found by Cheapflights users on 12/10. 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 12/123:05 pmIND - ISP
1 stop7h 30mSouthwest
Mon 12/153:55 pmISP - IND
1 stop3h 50mSouthwest
Deal found 12/10$757
This CheapOair deal was found by Cheapflights users on 12/10. 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 12/265:07 pmIND - ISP
1 stop24h 48mFrontier
Mon 12/292:04 pmISP - IND
1 stop26h 07mFrontier
Deal found 12/10$762
This CheapOair deal was found by Cheapflights users on 12/11. 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 12/1911:25 amIND - ISP
1 stop8h 15mFrontier
Sat 1/37:30 pmISP - IND
1 stop20h 41mFrontier
Deal found 12/11$961
This CheapOair deal was found by Cheapflights users on 12/11. 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 12/265:07 pmIND - ISP
1 stop24h 48mFrontier
Wed 12/315:27 pmISP - IND
1 stop22h 54mFrontier
Deal found 12/11$991
This CheapOair deal was found by Cheapflights users on 12/10. 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 12/295:05 pmIND - ISP
1 stop18h 20mFrontier
Sat 1/37:30 pmISP - IND
1 stop20h 41mFrontier
Deal found 12/10$1,151

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$163
(CheapOair)

One-way from

$152
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$289
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. 18% potential increase in price ($50 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 December 2025
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 December 12, 2025.
Use the filters below to find and compare flights from Indianapolis to Islip that are best for you.

Fly from

Indianapolis

Fly to

Islip

Route

Depart

Return

Price

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sat 2/14

11:06 am-7:48 am

1 stop20h 42m

Islip Long Island

Sat 2/21

8:23 pm-10:03 pm

1 stop25h 40m

$163

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 4/3

5:06 pm-7:11 pm

1 stop26h 05m

Islip Long Island

Tue 4/7

8:19 pm-4:11 pm

1 stop19h 52m

$453

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Mon 12/22

5:05 pm-11:25 am

1 stop18h 20m

Islip Long Island

Mon 12/29

8:35 pm-4:11 pm

1 stop19h 36m

$473

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sun 3/15

7:18 pm-12:47 pm

1 stop17h 29m

Islip Long Island

Thu 3/19

4:34 pm-9:21 am

1 stop16h 47m

$481

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 2/13

10:48 pm-10:46 am

1 stop11h 58m

Islip Long Island

Mon 2/16

8:23 am-9:53 pm

1 stop13h 30m

$511

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sat 12/27

9:43 pm-1:09 pm

1 stop15h 26m

Islip Long Island

Wed 12/31

8:21 pm-7:13 am

2 stops34h 52m

$582

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Tue 12/23

5:06 pm-4:37 pm

1 stop23h 31m

Islip Long Island

Mon 12/29

8:35 pm-4:11 pm

1 stop19h 36m

$662

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Fri 12/26

5:07 pm-5:55 pm

1 stop24h 48m

Islip Long Island

Mon 12/29

2:04 pm-4:11 pm

1 stop26h 07m

$762

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Mon 12/29

5:05 pm-11:25 am

1 stop18h 20m

Islip Long Island

Sat 1/3

7:30 pm-4:11 pm

1 stop20h 41m

$1,151

IndianapolisIslip

IND - ISP

INDISP

Indianapolis

Sun 12/28

5:06 pm-1:09 pm

1 stop20h 03m

Islip Long Island

Sun 1/4

2:04 pm-4:10 pm

1 stop26h 06m

$1,171

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 15 results
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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Indianapolis-Islip, New York flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $46). Flying from Indianapolis to Islip, New York in December is currently the most expensive (average of $90). 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.

What is the cheapest time of day to fly from IND to ISP?

Find hourly flight availability from Indianapolis to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 55% on flights from Indianapolis to Islip, New York by exploring options for tickets at noon.

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 December 12, 2025.
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
7.9
Good
4,253 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 20h 42m. Frontier provides one of the quickest options available for as low as $163. The distance from Indianapolis to Islip, New York is about 699 mi.

  • 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 $46). Flying from Indianapolis to Islip, New York in December is currently the most expensive (average of $90). 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

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$280Average$366FlexibilityNo cancel feeOn-time63%

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