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Cheap flights from Islip to Indianapolis from $84

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 to Indianapolis departing on 9/18. 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 to Indianapolis

Cheap round-trip flights

Frontier Logo
5:12 pm - 9:47 amISP-IND
16h 35m1 stop
Frontier Logo
6:05 pm - 10:40 amIND-ISP
16h 35m1 stop
$171Frontier
Find Deal
Thu, Sep 25 - Mon, Sep 29
Frontier Logo
5:12 pm - 9:47 amISP-IND
16h 35m1 stop
Frontier Logo
7:32 pm - 10:40 amIND-ISP
39h 08m2 stops
$246Frontier
Find Deal
Thu, Sep 25 - Mon, Sep 29
Logo
5:05 pm - 7:58 pmISP-IND
26h 53m1 stop
Logo
8:58 pm - 10:55 amIND-ISP
13h 57m2 stops
$305
Find Deal
Mon, Sep 29 - Fri, Oct 3
Logo
5:05 pm - 7:58 pmISP-IND
26h 53m1 stop
Logo
6:21 pm - 10:55 amIND-ISP
16h 34m1 stop
$309
Find Deal
Mon, Sep 29 - Fri, Oct 3
Frontier Logo
9:37 pm - 8:01 amISP-IND
10h 24m1 stop
Frontier Logo
10:06 pm - 10:37 amIND-ISP
12h 31m1 stop
$316Frontier
Find Deal
Thu, Oct 16 - Sun, Oct 19
Frontier Logo
9:37 pm - 10:36 amISP-IND
12h 59m2 stops
Frontier Logo
10:06 pm - 10:37 amIND-ISP
12h 31m1 stop
$467Frontier
Find Deal
Thu, Oct 16 - Sun, Oct 19
Southwest Logo
11:05 am - 4:10 pmISP-IND
5h 05m1 stop
Southwest Logo
7:40 pm - 11:50 pmIND-ISP
4h 10m1 stop
$492Southwest
Find Deal
Fri, Nov 21 - Sun, Nov 23
Southwest Logo
3:25 pm - 11:05 pmISP-IND
7h 40m1 stop
Southwest Logo
2:55 pm - 11:50 pmIND-ISP
8h 55m2 stops
$497Southwest
Find Deal
Fri, Nov 21 - Sun, Nov 23
Southwest Logo
5:50 am - 1:05 pmISP-IND
7h 15m2 stops
Southwest Logo
2:55 pm - 11:50 pmIND-ISP
8h 55m2 stops
$502Southwest
Find Deal
Fri, Nov 21 - Sun, Nov 23
Southwest Logo
6:00 am - 11:45 amISP-IND
5h 45m2 stops
Southwest Logo
2:55 pm - 11:45 pmIND-ISP
8h 50m2 stops
$512Southwest
Find Deal
Mon, Sep 29 - Fri, Oct 3

Frontier flights from Islip to Indianapolis

Our best Frontier deals on Islip to Indianapolis flight tickets
Frontier
Sep 25
ISP5:12 pmIslip Long Island
16h 35m
1 stop
IND9:47 amIndianapolis
Sep 29
IND6:05 pmIndianapolis
16h 35m
1 stop
ISP10:40 amIslip Long Island
$171
Find similar
Frontier
Sep 25
ISP5:12 pmIslip Long Island
16h 35m
1 stop
IND9:47 amIndianapolis
Sep 29
IND7:32 pmIndianapolis
39h 08m
2 stops
ISP10:40 amIslip Long Island
$246
Find similar
Frontier
Oct 16
ISP9:37 pmIslip Long Island
10h 24m
1 stop
IND8:01 amIndianapolis
Oct 19
IND10:06 pmIndianapolis
12h 31m
1 stop
ISP10:37 amIslip Long Island
$316
Find similar

Southwest flights from Islip to Indianapolis

Our best Southwest deals on Islip to Indianapolis flight tickets
Southwest
Nov 21
ISP11:05 amIslip Long Island
5h 05m
1 stop
IND4:10 pmIndianapolis
Nov 23
IND7:40 pmIndianapolis
4h 10m
1 stop
ISP11:50 pmIslip Long Island
$492
Find similar
Southwest
Nov 21
ISP3:25 pmIslip Long Island
7h 40m
1 stop
IND11:05 pmIndianapolis
Nov 23
IND2:55 pmIndianapolis
8h 55m
2 stops
ISP11:50 pmIslip Long Island
$497
Find similar
Southwest
Nov 21
ISP5:50 amIslip Long Island
7h 15m
2 stops
IND1:05 pmIndianapolis
Nov 23
IND2:55 pmIndianapolis
8h 55m
2 stops
ISP11:50 pmIslip Long Island
$502
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip 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 September 11, 2025.
Use the filters below to find and compare flights from Islip to Indianapolis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 9/25

5:12 pm-9:47 am

1 stop16h 35m

Indianapolis

Mon 9/29

6:05 pm-10:40 am

1 stop16h 35m

$171

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 9/25

5:12 pm-9:47 am

1 stop16h 35m

Indianapolis

Mon 9/29

7:32 pm-10:40 am

2 stops39h 08m

$246

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 9/29

5:05 pm-7:58 pm

1 stop26h 53m

Indianapolis

Fri 10/3

8:58 pm-10:55 am

2 stops13h 57m

$305

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 9/29

5:05 pm-7:58 pm

1 stop26h 53m

Indianapolis

Fri 10/3

6:21 pm-10:55 am

1 stop16h 34m

$309

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 10/16

9:37 pm-8:01 am

1 stop10h 24m

Indianapolis

Sun 10/19

10:06 pm-10:37 am

1 stop12h 31m

$316

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Thu 10/16

9:37 pm-10:36 am

2 stops12h 59m

Indianapolis

Sun 10/19

10:06 pm-10:37 am

1 stop12h 31m

$467

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 11/21

11:05 am-4:10 pm

1 stop5h 05m

Indianapolis

Sun 11/23

7:40 pm-11:50 pm

1 stop4h 10m

$492

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 11/21

3:25 pm-11:05 pm

1 stop7h 40m

Indianapolis

Sun 11/23

2:55 pm-11:50 pm

2 stops8h 55m

$497

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Fri 11/21

5:50 am-1:05 pm

2 stops7h 15m

Indianapolis

Sun 11/23

2:55 pm-11:50 pm

2 stops8h 55m

$502

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Mon 9/29

6:00 am-11:45 am

2 stops5h 45m

Indianapolis

Fri 10/3

2:55 pm-11:45 pm

2 stops8h 50m

$512

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 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 $248. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Indianapolis on Sunday is $313.

What is the cheapest time of day to depart on your flight to Indianapolis?

Flying to Indianapolis from Islip at noon is the least expensive time of day to depart. momondo users have found prices as low as $252 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 $290 on average. Flights to Indianapolis from Islip in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Islip to Indianapolis

Are you open to changing your travel dates? Check out the ideal times to fly from Islip to Indianapolis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip to Indianapolis (ISP to IND) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to Indianapolis

Direct flights

None
There are no direct flights from Islip to Indianapolis. There are no popular flight routes from Islip to Indianapolis.
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  • 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 05m, 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 many operators does momondo search for flights from Islip Long Island Airport to Indianapolis Airport?

  • 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.

  • What is the most popular airline from Islip to Indianapolis?

Best airlines flying from Islip to Indianapolis

Compare and see reviews for airlines that fly from Islip to Indianapolis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $271Free CancellationRating
8.0
4,248 reviews
Search Southwest flights

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
Fishers
Carmel
Shelbyville
Seymour
West Lafayette
Franklin
Brownsburg
Crawfordsville
Speedway
Greenfield
Westfield
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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