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Cheap flights from Islip, New York to Indianapolis from $122

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Indianapolis departing on 7/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Islip, New York to Indianapolis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:57 am - 6:38 pm
ISP
-
IND
7h 41m
1 stop
Frontier Logo
7:33 pm - 9:53 am
IND
-
ISP
14h 20m
1 stop
$265Frontier
Fri, Sep 4 - Mon, Sep 7
Frontier Logo
10:57 am - 6:38 pm
ISP
-
IND
7h 41m
1 stop
Frontier Logo
12:15 pm - 6:14 pm
IND
-
ISP
5h 59m
1 stop
$295Frontier
Fri, Aug 21 - Mon, Aug 24
Multiple Airlines Logo
10:57 am - 10:42 pm
ISP
-
IND
11h 45m
1 stop
Multiple Airlines Logo
6:11 pm - 4:47 pm
IND
-
ISP
22h 36m
2 stops
$327Multiple Airlines
Fri, Sep 4 - Mon, Sep 7
Southwest Logo
12:35 pm - 6:55 pm
ISP
-
IND
6h 20m
1 stop
Southwest Logo
5:15 am - 12:05 pm
IND
-
ISP
6h 50m
1 stop
$356Southwest
Thu, Aug 20 - Sun, Aug 23
Southwest Logo
12:35 pm - 9:25 pm
ISP
-
IND
8h 50m
2 stops
Southwest Logo
9:10 am - 12:35 pm
IND
-
ISP
3h 25m
1 stop
$357Southwest
Fri, Aug 21 - Mon, Aug 24
Southwest Logo
1:15 pm - 10:55 pm
ISP
-
IND
9h 40m
2 stops
Southwest Logo
3:45 pm - 11:15 pm
IND
-
ISP
7h 30m
1 stop
$361Southwest
Thu, Aug 20 - Sun, Aug 23
Southwest Logo
12:35 pm - 9:25 pm
ISP
-
IND
8h 50m
2 stops
Southwest Logo
6:25 am - 3:55 pm
IND
-
ISP
9h 30m
2 stops
$366Southwest
Thu, Aug 20 - Sun, Aug 23
Southwest Logo
1:15 pm - 10:55 pm
ISP
-
IND
9h 40m
2 stops
Southwest Logo
5:35 am - 12:35 pm
IND
-
ISP
7h 00m
2 stops
$397Southwest
Fri, Sep 4 - Mon, Sep 7
Southwest Logo
5:20 am - 12:35 pm
ISP
-
IND
7h 15m
1 stop
Southwest Logo
4:10 pm - 11:45 pm
IND
-
ISP
7h 35m
1 stop
$513Southwest
Mon, Jul 6 - Fri, Jul 10
Southwest Logo
5:20 am - 12:35 pm
ISP
-
IND
7h 15m
1 stop
Southwest Logo
4:05 pm - 11:40 pm
IND
-
ISP
7h 35m
2 stops
$518Southwest
Mon, Jul 6 - Fri, Jul 10

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Frontier flights from Islip, New York to Indianapolis

Our best Frontier deals on Islip, New York to Indianapolis flight tickets
Frontier
Sep 4
ISP10:57 amIslip Long Island
7h 41m
1 stop
IND6:38 pmIndianapolis
Sep 7
IND7:33 pmIndianapolis
14h 20m
1 stop
ISP9:53 amIslip Long Island
$265
Frontier
Aug 21
ISP10:57 amIslip Long Island
7h 41m
1 stop
IND6:38 pmIndianapolis
Aug 24
IND12:15 pmIndianapolis
5h 59m
1 stop
ISP6:14 pmIslip Long Island
$295
Frontier
Jun 25
ISP9:52 pmIslip Long Island
21h 09m
1 stop
IND7:01 pmIndianapolis
Jul 2
IND7:46 pmIndianapolis
14h 17m
1 stop
ISP10:03 amIslip Long Island
$561

Southwest flights from Islip, New York to Indianapolis

Our best Southwest deals on Islip, New York to Indianapolis flight tickets
Southwest
Aug 20
ISP12:35 pmIslip Long Island
6h 20m
1 stop
IND6:55 pmIndianapolis
Aug 23
IND5:15 amIndianapolis
6h 50m
1 stop
ISP12:05 pmIslip Long Island
$356
Southwest
Aug 21
ISP12:35 pmIslip Long Island
8h 50m
2 stops
IND9:25 pmIndianapolis
Aug 24
IND9:10 amIndianapolis
3h 25m
1 stop
ISP12:35 pmIslip Long Island
$357
Southwest
Aug 20
ISP1:15 pmIslip Long Island
9h 40m
2 stops
IND10:55 pmIndianapolis
Aug 23
IND3:45 pmIndianapolis
7h 30m
1 stop
ISP11:15 pmIslip Long Island
$361

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York 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, momondo users made 832,500 searches. Data last updated June 22, 2026.
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

Cheapest round-trip

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 9/4

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Mon 9/7

7:33 pm-9:53 am

1 stop14h 20m

$265

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 8/21

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Mon 8/24

12:15 pm-6:14 pm

1 stop5h 59m

$295

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 9/4

10:57 am-10:42 pm

1 stop11h 45m

Indianapolis

Mon 9/7

6:11 pm-4:47 pm

2 stops22h 36m

$327

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 8/20

12:35 pm-6:55 pm

1 stop6h 20m

Indianapolis

Sun 8/23

5:15 am-12:05 pm

1 stop6h 50m

$356
Quickest round-trip

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 8/21

12:35 pm-9:25 pm

2 stops8h 50m

Indianapolis

Mon 8/24

9:10 am-12:35 pm

1 stop3h 25m

$357

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 8/20

1:15 pm-10:55 pm

2 stops9h 40m

Indianapolis

Sun 8/23

3:45 pm-11:15 pm

1 stop7h 30m

$361

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 8/20

12:35 pm-9:25 pm

2 stops8h 50m

Indianapolis

Sun 8/23

6:25 am-3:55 pm

2 stops9h 30m

$366

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 9/4

1:15 pm-10:55 pm

2 stops9h 40m

Indianapolis

Mon 9/7

5:35 am-12:35 pm

2 stops7h 00m

$397

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 7/6

5:20 am-12:35 pm

1 stop7h 15m

Indianapolis

Fri 7/10

4:10 pm-11:45 pm

1 stop7h 35m

$513

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 7/6

5:20 am-12:35 pm

1 stop7h 15m

Indianapolis

Fri 7/10

4:05 pm-11:40 pm

2 stops7h 35m

$518

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Indianapolis from

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

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

Our data shows that Saturday is the least expensive day to fly to Indianapolis. Tickets to fly out on this day can be as low as $301. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Indianapolis on Monday is $449.

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 $329 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 $348 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

6h 20m

Direct flights

None
The fastest flight from Islip, New York to Indianapolis takes 6h 20m
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

Frequently asked questions about flying from Islip, New York to Indianapolis

  • 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 20m, 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 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.

Traveling to a place near Indianapolis?

Book flights to Indianapolis if you plan to visit one of these locations
Terre Haute
Bloomington
Kokomo
Muncie
Plainfield
Anderson
Greenwood
Noblesville
Carmel
Shelbyville
Franklin
Fishers
Speedway
Seymour
Westfield
West Lafayette
Crawfordsville
Brownsburg
Greenfield
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.

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