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Cheap flights from Islip, New York to Indianapolis from $178

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 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
10:48 am - 6:56 pm
ISP
-
IND
8h 08m
1 stop
Frontier Logo
7:41 pm - 10:03 am
IND
-
ISP
14h 22m
1 stop
$321Frontier
Mon, Aug 24 - Tue, Aug 25
Frontier Logo
4:13 pm - 10:14 am
ISP
-
IND
18h 01m
1 stop
Frontier Logo
6:06 pm - 9:33 am
IND
-
ISP
15h 27m
1 stop
$347Frontier
Sun, Sep 13 - Thu, Sep 17
Southwest Logo
4:05 pm - 10:20 pm
ISP
-
IND
6h 15m
1 stop
Southwest Logo
5:50 am - 10:15 am
IND
-
ISP
4h 25m
1 stop
$356Southwest
Mon, Aug 24 - Tue, Aug 25
Southwest Logo
4:05 pm - 10:20 pm
ISP
-
IND
6h 15m
1 stop
Southwest Logo
11:35 am - 9:05 pm
IND
-
ISP
9h 30m
2 stops
$361Southwest
Mon, Aug 24 - Tue, Aug 25
Multiple Airlines Logo
7:49 pm - 11:26 pm
ISP
-
IND
27h 37m
2 stops
Multiple Airlines Logo
6:15 am - 5:29 pm
IND
-
ISP
11h 14m
1 stop
$367Multiple Airlines
Sun, Jun 14 - Sat, Jun 20
Southwest Logo
6:10 am - 12:40 pm
ISP
-
IND
6h 30m
2 stops
Southwest Logo
11:35 am - 9:05 pm
IND
-
ISP
9h 30m
2 stops
$372Southwest
Mon, Aug 24 - Tue, Aug 25
Southwest Logo
5:50 pm - 12:20 am
ISP
-
IND
6h 30m
1 stop
Southwest Logo
5:15 am - 11:45 am
IND
-
ISP
6h 30m
1 stop
$387Southwest
Fri, Jul 31 - Sun, Aug 2
Southwest Logo
12:45 pm - 8:40 pm
ISP
-
IND
7h 55m
2 stops
Southwest Logo
5:10 am - 11:55 am
IND
-
ISP
6h 45m
1 stop
$406Southwest
Sun, Sep 13 - Thu, Sep 17
Southwest Logo
12:45 pm - 8:40 pm
ISP
-
IND
7h 55m
2 stops
Southwest Logo
1:15 pm - 10:05 pm
IND
-
ISP
8h 50m
2 stops
$411Southwest
Sun, Sep 13 - Thu, Sep 17
Southwest Logo
3:05 pm - 11:30 pm
ISP
-
IND
8h 25m
2 stops
Southwest Logo
5:15 am - 11:45 am
IND
-
ISP
6h 30m
1 stop
$412Southwest
Fri, Jul 31 - Sun, Aug 2

Southwest flights from Islip, New York to Indianapolis

Our best Southwest deals on Islip, New York to Indianapolis flight tickets
Southwest
Aug 24
ISP4:05 pmIslip Long Island
6h 15m
1 stop
IND10:20 pmIndianapolis
Aug 25
IND5:50 amIndianapolis
4h 25m
1 stop
ISP10:15 amIslip Long Island
$356
Southwest
Aug 24
ISP4:05 pmIslip Long Island
6h 15m
1 stop
IND10:20 pmIndianapolis
Aug 25
IND11:35 amIndianapolis
9h 30m
2 stops
ISP9:05 pmIslip Long Island
$361
Southwest
Aug 24
ISP6:10 amIslip Long Island
6h 30m
2 stops
IND12:40 pmIndianapolis
Aug 25
IND11:35 amIndianapolis
9h 30m
2 stops
ISP9:05 pmIslip Long Island
$372

Frontier flights from Islip, New York to Indianapolis

Our best Frontier deals on Islip, New York to Indianapolis flight tickets
Frontier
Aug 24
ISP10:48 amIslip Long Island
8h 08m
1 stop
IND6:56 pmIndianapolis
Aug 25
IND7:41 pmIndianapolis
14h 22m
1 stop
ISP10:03 amIslip Long Island
$321
Frontier
Sep 13
ISP4:13 pmIslip Long Island
18h 01m
1 stop
IND10:14 amIndianapolis
Sep 17
IND6:06 pmIndianapolis
15h 27m
1 stop
ISP9:33 amIslip Long Island
$347
Frontier
Jun 6
ISP11:00 amIslip Long Island
26h 01m
1 stop
IND1:01 pmIndianapolis
Jun 10
IND7:08 pmIndianapolis
25h 49m
1 stop
ISP8:57 pmIslip Long Island
$448

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 May 27, 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

Mon 8/24

10:48 am-6:56 pm

1 stop8h 08m

Indianapolis

Tue 8/25

7:41 pm-10:03 am

1 stop14h 22m

$321

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 9/13

4:13 pm-10:14 am

1 stop18h 01m

Indianapolis

Thu 9/17

6:06 pm-9:33 am

1 stop15h 27m

$347
Quickest round-trip

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 8/24

4:05 pm-10:20 pm

1 stop6h 15m

Indianapolis

Tue 8/25

5:50 am-10:15 am

1 stop4h 25m

$356

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 8/24

4:05 pm-10:20 pm

1 stop6h 15m

Indianapolis

Tue 8/25

11:35 am-9:05 pm

2 stops9h 30m

$361

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 6/14

7:49 pm-11:26 pm

2 stops27h 37m

Indianapolis

Sat 6/20

6:15 am-5:29 pm

1 stop11h 14m

$367

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 8/24

6:10 am-12:40 pm

2 stops6h 30m

Indianapolis

Tue 8/25

11:35 am-9:05 pm

2 stops9h 30m

$372

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 7/31

5:50 pm-12:20 am

1 stop6h 30m

Indianapolis

Sun 8/2

5:15 am-11:45 am

1 stop6h 30m

$387

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 9/13

12:45 pm-8:40 pm

2 stops7h 55m

Indianapolis

Thu 9/17

5:10 am-11:55 am

1 stop6h 45m

$406

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 9/13

12:45 pm-8:40 pm

2 stops7h 55m

Indianapolis

Thu 9/17

1:15 pm-10:05 pm

2 stops8h 50m

$411

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 7/31

3:05 pm-11:30 pm

2 stops8h 25m

Indianapolis

Sun 8/2

5:15 am-11:45 am

1 stop6h 30m

$412

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 Wednesday is the least expensive day to fly to Indianapolis. Tickets to fly out on this day can be as low as $265. 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 $383.

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 $266 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $311 on average. Flights to Indianapolis from Islip, New York in the morning 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 00m

Direct flights

None
The fastest flight from Islip, New York to Indianapolis takes 5h 00m
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 5h 00m, 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
Anderson
Plainfield
Greenwood
Noblesville
Carmel
Franklin
Shelbyville
Speedway
Fishers
Seymour
West Lafayette
Westfield
Brownsburg
Crawfordsville
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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