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Cheap flights from Islip, New York to Indianapolis from $124

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 8/27. 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-
7h 41m
Frontier Logo
9:59 pm - 9:53 am-
11h 54m
$236Frontier
Tue, Sep 1 - Thu, Sep 3
Frontier Logo
10:57 am - 6:38 pm-
7h 41m
Frontier Logo
9:59 pm - 9:53 am-
11h 54m
$236Frontier
Mon, Aug 31 - Thu, Sep 3
Frontier Logo
5:43 pm - 10:25 am-
16h 42m
Frontier Logo
7:48 pm - 4:58 pm-
21h 10m
$273Frontier
Sun, Sep 13 - Wed, Sep 16
Frontier Logo
10:57 am - 6:38 pm-
7h 41m
Frontier Logo
12:15 pm - 6:14 pm-
5h 59m
$277Frontier
Mon, Aug 31 - Fri, Sep 4
Frontier Logo
10:57 am - 6:38 pm-
7h 41m
Frontier Logo
12:15 pm - 6:14 pm-
5h 59m
$277Frontier
Tue, Sep 1 - Fri, Sep 4
Multiple Airlines Logo
5:27 pm - 6:53 pm-
25h 26m
Multiple Airlines Logo
6:27 pm - 4:58 pm-
22h 31m
$280Multiple Airlines
Tue, Sep 8 - Sat, Sep 12
Frontier Logo
10:57 am - 6:38 pm-
7h 41m
Frontier Logo
6:27 pm - 4:58 pm-
22h 31m
$289Frontier
Tue, Sep 8 - Sat, Sep 12
Frontier Logo
5:43 pm - 10:25 am-
16h 42m
Frontier Logo
11:21 am - 4:58 pm-
29h 37m
$291Frontier
Sun, Sep 13 - Wed, Sep 16
Frontier Logo
10:57 am - 6:38 pm-
7h 41m
Frontier Logo
12:15 pm - 6:14 pm-
5h 59m
$352Frontier
Mon, Aug 24 - Fri, Aug 28
Frontier Logo
10:57 am - 6:38 pm-
7h 41m
Frontier Logo
9:59 pm - 9:53 am-
11h 54m
$352Frontier
Wed, Aug 19 - Thu, Aug 20

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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
Aug 31
ISP10:57 amIslip Long Island
7h 41m
1 stop
IND6:38 pmIndianapolis
Sep 3
IND9:59 pmIndianapolis
11h 54m
1 stop
ISP9:53 amIslip Long Island
$236
Frontier
Sep 13
ISP5:43 pmIslip Long Island
16h 42m
1 stop
IND10:25 amIndianapolis
Sep 16
IND7:48 pmIndianapolis
21h 10m
2 stops
ISP4:58 pmIslip Long Island
$273
Frontier
Aug 31
ISP10:57 amIslip Long Island
7h 41m
1 stop
IND6:38 pmIndianapolis
Sep 4
IND12:15 pmIndianapolis
5h 59m
1 stop
ISP6:14 pmIslip Long Island
$277

Southwest flights from Islip, New York to Indianapolis

Our best Southwest deals on Islip, New York to Indianapolis flight tickets
Southwest
Oct 15
ISP5:40 pmIslip Long Island
7h 00m
1 stop
IND12:40 amIndianapolis
Oct 18
IND8:05 pmIndianapolis
3h 30m
1 stop
ISP11:35 pmIslip Long Island
$366
Southwest
Oct 15
ISP11:00 amIslip Long Island
4h 20m
1 stop
IND3:20 pmIndianapolis
Oct 18
IND4:30 pmIndianapolis
7h 05m
2 stops
ISP11:35 pmIslip Long Island
$371
Southwest
Nov 6
ISP1:35 pmIslip Long Island
8h 30m
2 stops
IND10:05 pmIndianapolis
Nov 9
IND5:40 amIndianapolis
9h 55m
2 stops
ISP3:35 pmIslip Long Island
$376

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 August 5, 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 9/1

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Thu 9/3

9:59 pm-9:53 am

1 stop11h 54m

$236

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 8/31

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Thu 9/3

9:59 pm-9:53 am

1 stop11h 54m

$236

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 9/13

5:43 pm-10:25 am

1 stop16h 42m

Indianapolis

Wed 9/16

7:48 pm-4:58 pm

2 stops21h 10m

$273
Quickest round-trip

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 8/31

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Fri 9/4

12:15 pm-6:14 pm

1 stop5h 59m

$277

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 9/1

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Fri 9/4

12:15 pm-6:14 pm

1 stop5h 59m

$277

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 9/8

5:27 pm-6:53 pm

2 stops25h 26m

Indianapolis

Sat 9/12

6:27 pm-4:58 pm

1 stop22h 31m

$280

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Tue 9/8

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Sat 9/12

6:27 pm-4:58 pm

1 stop22h 31m

$289

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sun 9/13

5:43 pm-10:25 am

1 stop16h 42m

Indianapolis

Wed 9/16

11:21 am-4:58 pm

1 stop29h 37m

$291

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 8/24

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Fri 8/28

12:15 pm-6:14 pm

1 stop5h 59m

$352

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Wed 8/19

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Thu 8/20

9:59 pm-9:53 am

1 stop11h 54m

$352

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 $311. 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 $503.

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 $346 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 $364 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 55m

Direct flights

None
The fastest flight from Islip, New York to Indianapolis takes 5h 55m
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 55m, 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
West Lafayette
Speedway
Fishers
Franklin
Westfield
Seymour
Shelbyville
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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