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Cheap flights from Islip, New York to Indianapolis from $129

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 9/19. 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.
Southwest Logo
5:00 pm - 11:00 pmISP  Islip Long Island-IND Indianapolis
6h 00m1 stop Orlando
Southwest Logo
5:25 am - 9:40 amIND  Indianapolis-ISP Islip Long Island
4h 15m1 stop Baltimore/Washington
$264Southwest
Thu, Sep 10 - Thu, Sep 17
Frontier Logo
5:43 pm - 10:25 amISP  Islip Long Island-IND Indianapolis
16h 42m1 stop Orlando
Frontier Logo
10:26 am - 4:58 pmIND  Indianapolis-ISP Islip Long Island
6h 32m1 stop Orlando
$266Frontier
Fri, Sep 11 - Sun, Sep 13
Multiple Airlines Logo
5:43 pm - 10:25 amISP  Islip Long Island-IND Indianapolis
16h 42m1 stop Orlando
Multiple Airlines Logo
7:48 pm - 11:20 amIND  Indianapolis-ISP Islip Long Island
15h 32m2 stops Atlanta Hartsfield-Jackson Raleigh-Durham
$270Multiple Airlines
Fri, Sep 25 - Mon, Sep 28
Frontier Logo
5:43 pm - 10:25 amISP  Islip Long Island-IND Indianapolis
16h 42m1 stop Orlando
Frontier Logo
7:48 pm - 4:58 pmIND  Indianapolis-ISP Islip Long Island
21h 10m2 stops Atlanta Hartsfield-Jackson Orlando
$273Frontier
Fri, Sep 25 - Mon, Sep 28
Frontier Logo
5:43 pm - 5:32 pmISP  Islip Long Island-IND Indianapolis
23h 49m1 stop Orlando
Frontier Logo
9:20 pm - 4:58 pmIND  Indianapolis-ISP Islip Long Island
19h 38m1 stop Orlando
$282Frontier
Fri, Sep 25 - Mon, Sep 28
Frontier Logo
10:57 am - 9:14 pmISP  Islip Long Island-IND Indianapolis
10h 17m1 stop Orlando
Frontier Logo
12:15 pm - 9:53 amIND  Indianapolis-ISP Islip Long Island
21h 38m1 stop Orlando
$300Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
10:57 am - 6:38 pmISP  Islip Long Island-IND Indianapolis
7h 41m1 stop Orlando
Frontier Logo
9:59 pm - 9:53 amIND  Indianapolis-ISP Islip Long Island
11h 54m1 stop Orlando
$314Frontier
Mon, Aug 31 - Thu, Sep 3
Frontier Logo
10:57 am - 9:14 pmISP  Islip Long Island-IND Indianapolis
10h 17m1 stop Orlando
Frontier Logo
9:59 pm - 9:53 amIND  Indianapolis-ISP Islip Long Island
11h 54m1 stop Orlando
$320Frontier
Thu, Aug 27 - Sun, Aug 30
Frontier Logo
10:57 am - 6:38 pmISP  Islip Long Island-IND Indianapolis
7h 41m1 stop Orlando
Frontier Logo
9:59 pm - 9:53 amIND  Indianapolis-ISP Islip Long Island
11h 54m1 stop Orlando
$334Frontier
Wed, Aug 26 - Sun, Aug 30
Southwest Logo
1:15 pm - 10:55 pmISP  Islip Long Island-IND Indianapolis
9h 40m2 stops West Palm Beach President Donald J. Trump Intl Orlando
Southwest Logo
5:25 am - 9:40 amIND  Indianapolis-ISP Islip Long Island
4h 15m1 stop Baltimore/Washington
$397Southwest
Thu, Aug 27 - Mon, Aug 31

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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
Sep 10
ISP5:00 pmIslip Long Island
6h 00m
1 stop
IND11:00 pmIndianapolis
Sep 17
IND5:25 amIndianapolis
4h 15m
1 stop
ISP9:40 amIslip Long Island
$264
Southwest
Aug 27
ISP1:15 pmIslip Long Island
9h 40m
2 stops
IND10:55 pmIndianapolis
Aug 31
IND5:25 amIndianapolis
4h 15m
1 stop
ISP9:40 amIslip Long Island
$397
Southwest
Sep 25
ISP1:15 pmIslip Long Island
9h 45m
2 stops
IND11:00 pmIndianapolis
Sep 28
IND6:45 amIndianapolis
5h 50m
2 stops
ISP12:35 pmIslip Long Island
$427

Frontier flights from Islip, New York to Indianapolis

Our best Frontier deals on Islip, New York to Indianapolis flight tickets
Frontier
Sep 11
ISP5:43 pmIslip Long Island
16h 42m
1 stop
IND10:25 amIndianapolis
Sep 13
IND10:26 amIndianapolis
6h 32m
1 stop
ISP4:58 pmIslip Long Island
$266
Frontier
Sep 25
ISP5:43 pmIslip Long Island
16h 42m
1 stop
IND10:25 amIndianapolis
Sep 28
IND7:48 pmIndianapolis
21h 10m
2 stops
ISP4:58 pmIslip Long Island
$273
Frontier
Sep 25
ISP5:43 pmIslip Long Island
23h 49m
1 stop
IND5:32 pmIndianapolis
Sep 28
IND9:20 pmIndianapolis
19h 38m
1 stop
ISP4:58 pmIslip Long Island
$282

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 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
Quickest round-trip

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Thu 9/10

5:00 pm-11:00 pm

1 stop6h 00m

Indianapolis

Thu 9/17

5:25 am-9:40 am

1 stop4h 15m

$264

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Fri 9/11

5:43 pm-10:25 am

1 stop16h 42m

Indianapolis

Sun 9/13

10:26 am-4:58 pm

1 stop6h 32m

$266

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Fri 9/25

5:43 pm-10:25 am

1 stop16h 42m

Indianapolis

Mon 9/28

7:48 pm-11:20 am

2 stops15h 32m

$270

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Fri 9/25

5:43 pm-10:25 am

1 stop16h 42m

Indianapolis

Mon 9/28

7:48 pm-4:58 pm

2 stops21h 10m

$273

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Fri 9/25

5:43 pm-5:32 pm

1 stop23h 49m

Indianapolis

Mon 9/28

9:20 pm-4:58 pm

1 stop19h 38m

$282

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Thu 8/27

10:57 am-9:14 pm

1 stop10h 17m

Indianapolis

Mon 8/31

12:15 pm-9:53 am

1 stop21h 38m

$300

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

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

$314

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Thu 8/27

10:57 am-9:14 pm

1 stop10h 17m

Indianapolis

Sun 8/30

9:59 pm-9:53 am

1 stop11h 54m

$320

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Wed 8/26

10:57 am-6:38 pm

1 stop7h 41m

Indianapolis

Sun 8/30

9:59 pm-9:53 am

1 stop11h 54m

$334

IslipIndianapolis

ISP Islip Long Island - IND Indianapolis

ISPIND

Islip Long Island

Thu 8/27

1:15 pm-10:55 pm

2 stops9h 40m

Indianapolis

Mon 8/31

5:25 am-9:40 am

1 stop4h 15m

$397

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $313. 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 $515.

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 $350 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $365 on average. Flights to Indianapolis from Islip, New York in the afternoon 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
Greenwood
Anderson
Plainfield
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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