What is the cheapest airline that flies from Islip Long Island to Indianapolis?

Southwest and Frontier are the most popular carriers operating from Islip Long Island to Indianapolis

What airlines fly to Indianapolis?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Indianapolis from Islip, New York according to our data. American Airlines is the first choice among our users, with 27% of people opting to fly with this airline when traveling to Indianapolis. Keep in mind that there are 7 different airlines that fly to Indianapolis on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Islip Long Island Airport to Indianapolis Airport?

Prices for flights from Islip Long Island Airport to Indianapolis Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Islip Long Island Airport to Indianapolis Airport?

The number of operators available for flights from Islip Long Island Airport to Indianapolis Airport is 1 as of November 2025.

How old do you have to be to fly from Islip Long Island Airport to Indianapolis Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Indianapolis Airport.

What documentation or ID do you need to fly to Indianapolis Airport?

The travel and health documents you'll need for your trip to Indianapolis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Indianapolis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$192 Cheap Flights from Islip to Indianapolis in 2025/26

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Find the cheapest flights from Islip, New York to Indianapolis

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:29 pm - 8:08 amISP-IND

11h 39m1 stop

12:03 pm - 10:44 pmIND-ISP

34h 41m2 stops

$192Multiple Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

6:27 pm - 8:04 pmISP-IND

25h 37m1 stop

6:07 pm - 10:09 amIND-ISP

16h 02m2 stops

$294Multiple Airlines

Find Deal

Tue, Nov 18 - Sat, Nov 22

12:55 pm - 7:45 pmISP-IND

6h 50m1 stop

6:15 am - 12:30 pmIND-ISP

6h 15m1 stop

$324Southwest

Find Deal

Tue, Dec 2 - Tue, Dec 9

6:27 pm - 8:04 pmISP-IND

25h 37m1 stop

11:04 am - 10:09 amIND-ISP

23h 05m1 stop

$338Multiple Airlines

Find Deal

Tue, Nov 18 - Sat, Nov 22

12:55 pm - 10:00 pmISP-IND

9h 05m2 stops

7:10 am - 3:20 pmIND-ISP

8h 10m2 stops

$372Southwest

Find Deal

Tue, Dec 2 - Tue, Dec 9

3:40 pm - 11:30 pmISP-IND

7h 50m1 stop

7:30 pm - 11:55 pmIND-ISP

4h 25m1 stop

$387Southwest

Find Deal

Wed, Dec 24 - Tue, Dec 30

12:55 pm - 10:00 pmISP-IND

9h 05m2 stops

7:30 pm - 11:55 pmIND-ISP

4h 25m1 stop

$412Southwest

Find Deal

Wed, Dec 24 - Tue, Dec 30

12:55 pm - 10:00 pmISP-IND

9h 05m2 stops

1:00 pm - 11:10 pmIND-ISP

10h 10m2 stops

$467Southwest

Find Deal

Wed, Dec 24 - Tue, Dec 30

8:19 pm - 9:38 amISP-IND

13h 19m1 stop

10:36 am - 7:11 pmIND-ISP

8h 35m1 stop

$1,000Frontier

Find Deal

Sun, Mar 29 - Sun, Apr 12

Frontier flights from Islip, New York to Indianapolis

Our best Frontier deals on Islip, New York to Indianapolis flight tickets

Frontier

Nov 8

ISP4:58 pmIslip Long Island

15h 46m

1 stop

IND8:44 amIndianapolis

Nov 15

IND9:36 pmIndianapolis

23h 06m

1 stop

ISP8:42 pmIslip Long Island

$487

Find similar

Frontier

Mar 29

ISP8:19 pmIslip Long Island

13h 19m

1 stop

IND9:38 amIndianapolis

Apr 12

IND10:36 amIndianapolis

8h 35m

1 stop

ISP7:11 pmIslip Long Island

$1,000

Find similar

Southwest flights from Islip, New York to Indianapolis

Our best Southwest deals on Islip, New York to Indianapolis flight tickets

Southwest

Dec 2

ISP12:55 pmIslip Long Island

6h 50m

1 stop

IND7:45 pmIndianapolis

Dec 9

IND6:15 amIndianapolis

6h 15m

1 stop

ISP12:30 pmIslip Long Island

$324

Find similar

Southwest

Dec 2

ISP12:55 pmIslip Long Island

9h 05m

2 stops

IND10:00 pmIndianapolis

Dec 9

IND7:10 amIndianapolis

8h 10m

2 stops

ISP3:20 pmIslip Long Island

$372

Find similar

Southwest

Dec 24

ISP3:40 pmIslip Long Island

7h 50m

1 stop

IND11:30 pmIndianapolis

Dec 30

IND7:30 pmIndianapolis

4h 25m

1 stop

ISP11:55 pmIslip Long Island

$387

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to Indianapolis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 12/2

8:29 pm-8:08 am

1 stop11h 39m

Indianapolis

Tue 12/9

12:03 pm-10:44 pm

2 stops34h 41m

$192

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 11/18

6:27 pm-8:04 pm

1 stop25h 37m

Indianapolis

Sat 11/22

6:07 pm-10:09 am

2 stops16h 02m

$294

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 12/2

12:55 pm-7:45 pm

1 stop6h 50m

Indianapolis

Tue 12/9

6:15 am-12:30 pm

1 stop6h 15m

$324

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 11/18

6:27 pm-8:04 pm

1 stop25h 37m

Indianapolis

Sat 11/22

11:04 am-10:09 am

1 stop23h 05m

$338

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 12/2

12:55 pm-10:00 pm

2 stops9h 05m

Indianapolis

Tue 12/9

7:10 am-3:20 pm

2 stops8h 10m

$372

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Wed 12/24

3:40 pm-11:30 pm

1 stop7h 50m

Indianapolis

Tue 12/30

7:30 pm-11:55 pm

1 stop4h 25m

$387

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Wed 12/24

12:55 pm-10:00 pm

2 stops9h 05m

Indianapolis

Tue 12/30

7:30 pm-11:55 pm

1 stop4h 25m

$412

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Wed 12/24

12:55 pm-10:00 pm

2 stops9h 05m

Indianapolis

Tue 12/30

1:00 pm-11:10 pm

2 stops10h 10m

$467

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 3/29

8:19 pm-9:38 am

1 stop13h 19m

Indianapolis

Sun 4/12

10:36 am-7:11 pm

1 stop8h 35m

$1,000

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 11/28

3:25 pm-11:05 pm

1 stop7h 40m

$260

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to Indianapolis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Indianapolis?

Our data shows that Tuesday is the least expensive day to fly to Indianapolis. Tickets to fly out on this day can be as low as $247. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Indianapolis on Sunday is $305.

What is the cheapest time of day to depart on your flight to Indianapolis?

Flying to Indianapolis from Islip, New York at noon is the least expensive time of day to depart. momondo users have found prices as low as $253 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $281 on average. Flights to Indianapolis from Islip, New York in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Islip, New York to Indianapolis

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Indianapolis according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Islip, New York to Indianapolis (ISP to IND) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Indianapolis

Direct flights	None

There are no direct flights from Islip, New York to Indianapolis. There are no popular flight routes from Islip, New York to Indianapolis.

Search flight deals

How far is Islip Long Island to Indianapolis by plane?
There are 684.9 mi between Islip Long Island and Indianapolis. Flights usually cover this in 6h 50m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Islip Long Island Airport to Indianapolis Airport?
Prices for flights from Islip Long Island Airport to Indianapolis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Islip Long Island Airport to Indianapolis Airport?
The number of operators available for flights from Islip Long Island Airport to Indianapolis Airport is 1 as of November 2025.
How old do you have to be to fly from Islip Long Island Airport to Indianapolis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Indianapolis Airport.
What documentation or ID do you need to fly to Indianapolis Airport?
The travel and health documents you'll need for your trip to Indianapolis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Indianapolis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Islip, New York to Indianapolis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Islip, New York to Indianapolis is Southwest (100% of total bookings).

Best airlines flying from Islip, New York to Indianapolis

Compare and see reviews for airlines that fly from Islip, New York to Indianapolis with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $271	Free Cancellation	Rating 8.0 4,239 reviews		Search Southwest flights

Terre Haute

Bloomington

Kokomo

Muncie

Anderson

Plainfield

Greenwood

Noblesville

Fishers

Carmel

Shelbyville

West Lafayette

Seymour

Franklin

Speedway

Crawfordsville

Brownsburg

Greenfield

Westfield

Mooresville

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Indianapolis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Indianapolis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Islip to Indianapolis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Islip to Indianapolis flights to just show those with flexible booking policies.

How can momondo help me find flights from Islip to Indianapolis?

momondo provides multiple filters to help you find the best flight to Indianapolis from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Islip to Indianapolis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Islip to Indianapolis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.