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Cheap flights from Islip, New York to Indianapolis from $123

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 8/5. 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
4:13 pm - 10:14 am
ISP
-
IND
18h 01m
1 stop
Frontier Logo
11:09 am - 9:33 am
IND
-
ISP
22h 24m
1 stop
$260Frontier
Sun, Sep 13 - Thu, Sep 17
Frontier Logo
10:57 am - 5:37 pm
ISP
-
IND
6h 40m
1 stop
Frontier Logo
6:32 pm - 9:53 am
IND
-
ISP
15h 21m
1 stop
$325Frontier
Fri, Aug 14 - Mon, Aug 17
Frontier Logo
10:57 am - 5:37 pm
ISP
-
IND
6h 40m
1 stop
Frontier Logo
7:47 pm - 9:53 am
IND
-
ISP
14h 06m
1 stop
$326Frontier
Fri, Jul 17 - Sun, Jul 19
Frontier Logo
10:43 am - 7:02 pm
ISP
-
IND
8h 19m
1 stop
Frontier Logo
11:00 am - 9:53 am
IND
-
ISP
22h 53m
1 stop
$328Frontier
Sat, Jul 18 - Sun, Jul 19
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
$335Frontier
Fri, Sep 4 - Mon, Sep 7
Southwest Logo
1:15 pm - 10:55 pm
ISP
-
IND
9h 40m
2 stops
Southwest Logo
9:10 am - 12:35 pm
IND
-
ISP
3h 25m
1 stop
$357Southwest
Fri, Aug 14 - Mon, Aug 17
Southwest Logo
4:35 pm - 11:25 pm
ISP
-
IND
6h 50m
1 stop
Southwest Logo
1:15 pm - 10:05 pm
IND
-
ISP
8h 50m
2 stops
$361Southwest
Sun, Sep 13 - Thu, Sep 17
Southwest Logo
5:35 am - 10:10 am
ISP
-
IND
4h 35m
1 stop
Southwest Logo
1:50 pm - 7:35 pm
IND
-
ISP
5h 45m
1 stop
$365Southwest
Sun, Oct 25 - Wed, Oct 28
Southwest Logo
12:35 pm - 9:25 pm
ISP
-
IND
8h 50m
2 stops
Southwest Logo
1:15 pm - 10:05 pm
IND
-
ISP
8h 50m
2 stops
$366Southwest
Fri, Aug 14 - Mon, Aug 17
Southwest Logo
5:55 pm - 12:20 am
ISP
-
IND
6h 25m
1 stop
Southwest Logo
7:00 am - 3:40 pm
IND
-
ISP
8h 40m
2 stops
$370Southwest
Sun, Oct 25 - Wed, Oct 28

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Southwest flights from Islip, New York to Indianapolis

Our best Southwest deals on Islip, New York to Indianapolis flight tickets
Southwest
Aug 14
ISP1:15 pmIslip Long Island
9h 40m
2 stops
IND10:55 pmIndianapolis
Aug 17
IND9:10 amIndianapolis
3h 25m
1 stop
ISP12:35 pmIslip Long Island
$357
Southwest
Sep 13
ISP4:35 pmIslip Long Island
6h 50m
1 stop
IND11:25 pmIndianapolis
Sep 17
IND1:15 pmIndianapolis
8h 50m
2 stops
ISP10:05 pmIslip Long Island
$361
Southwest
Oct 25
ISP5:35 amIslip Long Island
4h 35m
1 stop
IND10:10 amIndianapolis
Oct 28
IND1:50 pmIndianapolis
5h 45m
1 stop
ISP7:35 pmIslip Long Island
$365

Frontier flights from Islip, New York to Indianapolis

Our best Frontier deals on Islip, New York to Indianapolis flight tickets
Frontier
Sep 13
ISP4:13 pmIslip Long Island
18h 01m
1 stop
IND10:14 amIndianapolis
Sep 17
IND11:09 amIndianapolis
22h 24m
1 stop
ISP9:33 amIslip Long Island
$260
Frontier
Aug 14
ISP10:57 amIslip Long Island
6h 40m
1 stop
IND5:37 pmIndianapolis
Aug 17
IND6:32 pmIndianapolis
15h 21m
1 stop
ISP9:53 amIslip Long Island
$325
Frontier
Jul 17
ISP10:57 amIslip Long Island
6h 40m
1 stop
IND5:37 pmIndianapolis
Jul 19
IND7:47 pmIndianapolis
14h 06m
1 stop
ISP9:53 amIslip Long Island
$326

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 July 2, 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

Sun 9/13

4:13 pm-10:14 am

1 stop18h 01m

Indianapolis

Thu 9/17

11:09 am-9:33 am

1 stop22h 24m

$260

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 8/14

10:57 am-5:37 pm

1 stop6h 40m

Indianapolis

Mon 8/17

6:32 pm-9:53 am

1 stop15h 21m

$325

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 7/17

10:57 am-5:37 pm

1 stop6h 40m

Indianapolis

Sun 7/19

7:47 pm-9:53 am

1 stop14h 06m

$326

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 7/18

10:43 am-7:02 pm

1 stop8h 19m

Indianapolis

Sun 7/19

11:00 am-9:53 am

1 stop22h 53m

$328

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 9/4

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Mon 9/7

12:15 pm-6:14 pm

1 stop5h 59m

$335

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 8/14

1:15 pm-10:55 pm

2 stops9h 40m

Indianapolis

Mon 8/17

9:10 am-12:35 pm

1 stop3h 25m

$357

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 9/13

4:35 pm-11:25 pm

1 stop6h 50m

Indianapolis

Thu 9/17

1:15 pm-10:05 pm

2 stops8h 50m

$361
Quickest round-trip

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 10/25

5:35 am-10:10 am

1 stop4h 35m

Indianapolis

Wed 10/28

1:50 pm-7:35 pm

1 stop5h 45m

$365

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 8/14

12:35 pm-9:25 pm

2 stops8h 50m

Indianapolis

Mon 8/17

1:15 pm-10:05 pm

2 stops8h 50m

$366

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 10/25

5:55 pm-12:20 am

1 stop6h 25m

Indianapolis

Wed 10/28

7:00 am-3:40 pm

2 stops8h 40m

$370

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 $302. 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 $456.

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 $332 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 $350 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 30m

Direct flights

None
The fastest flight from Islip, New York to Indianapolis takes 6h 30m
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 30m, 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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