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Cheap flights from Islip, New York to Indianapolis from $115

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 7/30. 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
4:41 pm - 10:28 am
ISP
-
IND
17h 47m
1 stop
Frontier Logo
7:42 pm - 9:58 am
IND
-
ISP
14h 16m
1 stop
$258Frontier
Tue, Jul 7 - Thu, Jul 9
Frontier Logo
9:52 pm - 11:19 am
ISP
-
IND
37h 27m
2 stops
Frontier Logo
7:08 pm - 8:57 pm
IND
-
ISP
25h 49m
1 stop
$312Frontier
Wed, Jun 10 - Wed, Jun 17
Frontier Logo
6:02 pm - 1:01 pm
ISP
-
IND
18h 59m
1 stop
Frontier Logo
8:39 pm - 10:05 am
IND
-
ISP
13h 26m
2 stops
$316Frontier
Tue, Jun 2 - Thu, Jun 4
Southwest Logo
4:40 pm - 11:10 pm
ISP
-
IND
6h 30m
1 stop
Southwest Logo
4:10 pm - 10:35 pm
IND
-
ISP
6h 25m
1 stop
$351Southwest
Wed, Jun 10 - Wed, Jun 17
Frontier Logo
11:00 am - 6:39 pm
ISP
-
IND
7h 39m
1 stop
Frontier Logo
12:14 pm - 10:05 am
IND
-
ISP
21h 51m
2 stops
$353Frontier
Mon, Jun 1 - Wed, Jun 3
Southwest Logo
5:35 pm - 11:40 pm
ISP
-
IND
6h 05m
1 stop
Southwest Logo
9:50 am - 4:00 pm
IND
-
ISP
6h 10m
1 stop
$362Southwest
Sat, Jul 25 - Wed, Jul 29
Southwest Logo
5:35 pm - 11:40 pm
ISP
-
IND
6h 05m
1 stop
Southwest Logo
5:05 am - 1:45 pm
IND
-
ISP
8h 40m
2 stops
$367Southwest
Sat, Jul 25 - Wed, Jul 29
Frontier Logo
6:02 pm - 1:01 pm
ISP
-
IND
18h 59m
1 stop
Frontier Logo
1:46 pm - 10:05 am
IND
-
ISP
20h 19m
1 stop
$369Frontier
Tue, Jun 2 - Thu, Jun 4
Frontier Logo
4:41 pm - 11:05 am
ISP
-
IND
18h 24m
2 stops
Frontier Logo
7:42 pm - 9:58 am
IND
-
ISP
14h 16m
1 stop
$389Frontier
Tue, Jul 7 - Thu, Jul 9
Southwest Logo
2:45 pm - 10:30 pm
ISP
-
IND
7h 45m
2 stops
Southwest Logo
5:05 am - 1:45 pm
IND
-
ISP
8h 40m
2 stops
$392Southwest
Sat, Jul 25 - Wed, Jul 29

Southwest flights from Islip, New York to Indianapolis

Our best Southwest deals on Islip, New York to Indianapolis flight tickets
Southwest
Jun 10
ISP4:40 pmIslip Long Island
6h 30m
1 stop
IND11:10 pmIndianapolis
Jun 17
IND4:10 pmIndianapolis
6h 25m
1 stop
ISP10:35 pmIslip Long Island
$351
Southwest
Jul 25
ISP5:35 pmIslip Long Island
6h 05m
1 stop
IND11:40 pmIndianapolis
Jul 29
IND9:50 amIndianapolis
6h 10m
1 stop
ISP4:00 pmIslip Long Island
$362
Southwest
Jul 25
ISP5:35 pmIslip Long Island
6h 05m
1 stop
IND11:40 pmIndianapolis
Jul 29
IND5:05 amIndianapolis
8h 40m
2 stops
ISP1:45 pmIslip Long Island
$367

Frontier flights from Islip, New York to Indianapolis

Our best Frontier deals on Islip, New York to Indianapolis flight tickets
Frontier
Jul 7
ISP4:41 pmIslip Long Island
17h 47m
1 stop
IND10:28 amIndianapolis
Jul 9
IND7:42 pmIndianapolis
14h 16m
1 stop
ISP9:58 amIslip Long Island
$258
Frontier
Jun 10
ISP9:52 pmIslip Long Island
37h 27m
2 stops
IND11:19 amIndianapolis
Jun 17
IND7:08 pmIndianapolis
25h 49m
1 stop
ISP8:57 pmIslip Long Island
$312
Frontier
Jun 2
ISP6:02 pmIslip Long Island
18h 59m
1 stop
IND1:01 pmIndianapolis
Jun 4
IND8:39 pmIndianapolis
13h 26m
2 stops
ISP10:05 amIslip Long Island
$316

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 15, 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

Tue 7/7

4:41 pm-10:28 am

1 stop17h 47m

Indianapolis

Thu 7/9

7:42 pm-9:58 am

1 stop14h 16m

$258

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Wed 6/10

9:52 pm-11:19 am

2 stops37h 27m

Indianapolis

Wed 6/17

7:08 pm-8:57 pm

1 stop25h 49m

$312

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 6/2

6:02 pm-1:01 pm

1 stop18h 59m

Indianapolis

Thu 6/4

8:39 pm-10:05 am

2 stops13h 26m

$316

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Wed 6/10

4:40 pm-11:10 pm

1 stop6h 30m

Indianapolis

Wed 6/17

4:10 pm-10:35 pm

1 stop6h 25m

$351

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 6/1

11:00 am-6:39 pm

1 stop7h 39m

Indianapolis

Wed 6/3

12:14 pm-10:05 am

2 stops21h 51m

$353
Quickest round-trip

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 7/25

5:35 pm-11:40 pm

1 stop6h 05m

Indianapolis

Wed 7/29

9:50 am-4:00 pm

1 stop6h 10m

$362

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 7/25

5:35 pm-11:40 pm

1 stop6h 05m

Indianapolis

Wed 7/29

5:05 am-1:45 pm

2 stops8h 40m

$367

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 6/2

6:02 pm-1:01 pm

1 stop18h 59m

Indianapolis

Thu 6/4

1:46 pm-10:05 am

1 stop20h 19m

$369

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 7/7

4:41 pm-11:05 am

2 stops18h 24m

Indianapolis

Thu 7/9

7:42 pm-9:58 am

1 stop14h 16m

$389

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 7/25

2:45 pm-10:30 pm

2 stops7h 45m

Indianapolis

Wed 7/29

5:05 am-1:45 pm

2 stops8h 40m

$392

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 $258. 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 $363.

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 $263 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 $304 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

4h 45m

Direct flights

None
The fastest flight from Islip, New York to Indianapolis takes 4h 45m
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 4h 45m, 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
Fishers
Shelbyville
Speedway
Seymour
West Lafayette
Westfield
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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