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$98+ Cheap flights from Islip, NY to Indianapolis (ISP - IND)

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — IND
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap 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 July 30, 2025.

Round-trip from

$217
(Mytrip)

One-way from

$98
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$416
From Islip Long Island to Indianapolis
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One-way flight from Islip Long Island to Indianapolis
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Highest demand for flights based on searches. 20% potential increase in price ($92 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Islip to Indianapolis

Cheapest flights from Islip to Indianapolis
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 July 30, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/138:37 pmISP - IND
1 stop21h 16mFrontier
Sun 8/176:48 pmIND - ISP
1 stop25h 04mFrontier
Deal found 7/29$217
This Southwest deal was found by Cheapflights users on 7/29. 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 10/126:30 pmISP - IND
1 stop5h 45mSouthwest
Tue 10/149:05 amIND - ISP
1 stop7h 00mSouthwest
Deal found 7/29$297
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:25 pmISP - IND
2 stops18h 53mMultiple Airlines
Sun 9/711:10 amIND - ISP
3 stops26h 35mMultiple Airlines
Deal found 7/28$607

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 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from Islip to Indianapolis that are best for you.

Fly from

Islip

Fly to

Indianapolis

Route

Depart

Return

Price

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Wed 8/13

8:37 pm-5:53 pm

1 stop21h 16m

Indianapolis

Sun 8/17

6:48 pm-7:52 pm

1 stop25h 04m

$217

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 10/12

6:30 pm-12:15 am

1 stop5h 45m

Indianapolis

Tue 10/14

9:05 am-4:05 pm

1 stop7h 00m

$297

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 9/5

2:25 pm-9:18 am

2 stops18h 53m

Indianapolis

Sun 9/7

11:10 am-1:45 pm

3 stops26h 35m

$607

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 8/21

6:05 am-12:13 pm

1 stop6h 08m

$98

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 10/14

6:00 am-10:35 am

1 stop4h 35m

$119

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 8/19

1:55 pm-11:30 am

3 stops21h 35m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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.
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 Islip to Indianapolis

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

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $297). Flying from Islip, New York to Indianapolis in March is currently the most expensive (average of $361). 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 Indianapolis

Get insights into the airlines that provide service to Indianapolis. 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 Indianapolis. Reviews last updated July 30, 2025.
See what other customers who have flown with Southwest and Frontier from Islip to Indianapolis 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
4,241 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.9
Fair
3,237 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

  • What are the cheapest airlines flying from Islip, New York to Indianapolis round-trip?

    Frontier, at $217, was found to be the cheapest airline from Islip, New York to Indianapolis. An alternate airline flying to your destination would be Southwest. Users have found that Frontier is 39% cheaper than the other options available to this destination.

  • Can I find deals for flights from Islip to Indianapolis that include hotel bookings?

    Yes. In addition to deals on Islip to Indianapolis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Indianapolis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Indianapolis.

  • Can I find deals for business class flights from Islip to Indianapolis?

    Yes. Cheapflights offers flight deals from Islip to Indianapolis 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 Islip, New York to Indianapolis?

    Currently, August is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $297). Flying from Islip, New York to Indianapolis in March is currently the most expensive (average of $361). 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 Indianapolis?

Book flights to Indianapolis if you plan to visit one of these locations
Greenwood
Bloomington
Noblesville
Muncie
Fishers
Terre Haute
Anderson
Kokomo
Franklin
Plainfield
Carmel
Crawfordsville
Shelbyville
Speedway

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Alternative routes for Islip to Indianapolis

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Islip to Indianapolis

Discover the top airline that operate flights from Islip to Indianapolis. 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$271Average$346FlexibilityNo cancel feeOn-time63%

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