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

Southwest is the most popular carrier operating from Islip Long Island to Indianapolis

What airlines fly to Indianapolis?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Indianapolis from Islip, New York according to our data. Delta is the first choice among our users, with 28% 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 December 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.

$198 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.

12:00 pm - 6:23 pm

ISP

IND

30h 23m1 stop

9:40 pm - 6:48 pm

IND

ISP

45h 08m2 stops

$277Multiple Airlines

Tue, Jan 20 - Tue, Jan 27

12:40 pm - 4:45 pm

ISP

IND

4h 05m1 stop

11:25 am - 4:15 pm

IND

ISP

4h 50m1 stop

$303Southwest

Tue, Jan 20 - Tue, Jan 27

6:00 am - 3:05 pm

ISP

IND

9h 05m2 stops

6:00 am - 4:15 pm

IND

ISP

10h 15m2 stops

$320Southwest

Tue, Jan 20 - Tue, Jan 27

9:43 pm - 9:43 am

ISP

IND

12h 00m1 stop

9:34 pm - 1:21 pm

IND

ISP

15h 47m2 stops

$321Multiple Airlines

Fri, Jan 30 - Sun, Feb 1

12:40 pm - 4:45 pm

ISP

IND

4h 05m1 stop

10:20 am - 4:35 pm

IND

ISP

6h 15m1 stop

$367Southwest

Fri, Jan 30 - Sun, Feb 1

6:00 am - 3:05 pm

ISP

IND

9h 05m2 stops

12:40 pm - 10:20 pm

IND

ISP

9h 40m2 stops

$377Southwest

Fri, Jan 30 - Sun, Feb 1

Southwest flights from Islip, New York to Indianapolis

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

Southwest

Jan 20

ISP12:40 pmIslip Long Island

4h 05m

1 stop

IND4:45 pmIndianapolis

Jan 27

IND11:25 amIndianapolis

4h 50m

1 stop

ISP4:15 pmIslip Long Island

$303

Find similar

Southwest

Jan 20

ISP6:00 amIslip Long Island

9h 05m

2 stops

IND3:05 pmIndianapolis

Jan 27

IND6:00 amIndianapolis

10h 15m

2 stops

ISP4:15 pmIslip Long Island

$320

Find similar

Southwest

Jan 30

ISP12:40 pmIslip Long Island

4h 05m

1 stop

IND4:45 pmIndianapolis

Feb 1

IND10:20 amIndianapolis

6h 15m

1 stop

ISP4:35 pmIslip Long Island

$367

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 1/20

12:00 pm-6:23 pm

1 stop30h 23m

Indianapolis

Tue 1/27

9:40 pm-6:48 pm

2 stops45h 08m

$277

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 1/20

12:40 pm-4:45 pm

1 stop4h 05m

Indianapolis

Tue 1/27

11:25 am-4:15 pm

1 stop4h 50m

$303

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 1/20

6:00 am-3:05 pm

2 stops9h 05m

Indianapolis

Tue 1/27

6:00 am-4:15 pm

2 stops10h 15m

$320

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 1/30

9:43 pm-9:43 am

1 stop12h 00m

Indianapolis

Sun 2/1

9:34 pm-1:21 pm

2 stops15h 47m

$321

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 1/30

12:40 pm-4:45 pm

1 stop4h 05m

Indianapolis

Sun 2/1

10:20 am-4:35 pm

1 stop6h 15m

$367

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 1/30

6:00 am-3:05 pm

2 stops9h 05m

Indianapolis

Sun 2/1

12:40 pm-10:20 pm

2 stops9h 40m

$377

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 4/5

11:55 am-4:11 pm

2 stops28h 16m

$198

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 4/4

6:00 pm-1:10 am

1 stop7h 10m

$211

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 4/5

11:55 am-12:12 am

3 stops36h 17m

$215

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 4/4

11:50 am-12:12 am

2 stops12h 22m

$256

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 Wednesday is the least expensive day to fly to Indianapolis. Tickets to fly out on this day can be as low as $232. 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 $300.

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

Flying to Indianapolis from Islip, New York in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $243 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $280 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

Fastest flight time	5h 40m
Direct flights	None

The fastest flight from Islip, New York to Indianapolis takes 5h 40m

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 5h 40m, 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 December 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 4,253 reviews		Search Southwest flights

Terre Haute

Bloomington

Kokomo

Muncie

Anderson

Plainfield

Greenwood

Noblesville

Fishers

Carmel

Shelbyville

West Lafayette

Franklin

Seymour

Brownsburg

Speedway

Crawfordsville

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.