How far in advance should I book a flight from Islip, New York to Indianapolis?

To save on the cost of your flight from Islip, New York to Indianapolis, book at least 30 days before your planned departure. Booking around this time can save you about 84% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $258 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $359.

What is the cheapest month to fly from Islip, New York to Indianapolis?

August can be a great time to fly to Indianapolis from Islip, New York with a flight ticket averaging about $262. Cheapflights users have found deals in the month of August for as cheap as $105. The most expensive prices can be found in the month of December.

What is the cheapest time of day to fly from ISP to IND?

Unlike at noon, when flights are generally more expensive, you can save up to 32% on flights from Islip, New York to Indianapolis by exploring options for tickets in the morning.

Most accurate provider : When it comes to deals on Islip, New York-Indianapolis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Indianapolis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Indianapolis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Islip, New York-Indianapolis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Indianapolis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Islip to Indianapolis that include hotel bookings?

Yes. In addition to deals on Islip to Indianapolis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Islip to Indianapolis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Indianapolis.

Can I find deals for business class flights from Islip to Indianapolis?

Yes. Cheapflights offers flight deals from Islip to Indianapolis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$80+ Flights from Islip, NY to Indianapolis

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Islip to Indianapolis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Islip to Indianapolis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	December
Cheapest in	August
Average price	$241

Provider with most accurate pricing for Islip Long Island-Indianapolis flight deals.

Search Deals

Provider most trusted by Cheapflights users for Islip Long Island-Indianapolis flights.

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($19 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from Islip to Indianapolis

One-way flights from Islip to Indianapolis
Search for one-way flight options from Islip to Indianapolis. Find affordable one-way fares based on user searches. Data last updated February 21, 2025.

Sat 3/18:47 amISP - IND

1 stop6h 33mFrontier

Deal found 2/20

$80

Find flights from Islip to Indianapolis within your budget

Fly from

Fly to

Route

Depart

Return

Price

IslipIndianapolis

ISP - IND

ISPIND

Islip Long Island

Sat 3/1

8:47 am-3:20 pm

1 stop6h 33m

$80

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Compare providers for flights from Islip to Indianapolis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Indianapolis in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Islip, New York-Indianapolis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Indianapolis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Indianapolis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Islip, New York-Indianapolis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Indianapolis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Indianapolis

Have a flexible travel schedule? Discover the best time to fly to Indianapolis from Islip with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Islip to Indianapolis

Get recent, data-driven insights about flights from Islip to Indianapolis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Islip, New York to Indianapolis?

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $297). Flying from Islip, New York to Indianapolis in March is currently the most expensive (average of $360). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Indianapolis by month

In terms of precipitation, rainfall in Indianapolis ranges from 2.3 - 5.1 inches per month. May is typically the wettest month, when rainfall can reach 5.1 in. February is typically the driest time to visit Indianapolis when rainfall is around 2.3 in.

Temperature in Indianapolis by month

If weather is an important factor for your trip to Indianapolis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Indianapolis

Frontier

6.0

Okay

3,353 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

SAN - DEN

This was the worst flight ever. Stuck on the TARMAC for over 2 hrs. Then returned to airport and reboard. Missed our connecting flight but the flight crew that was with the delayed flight didn't miss the boarding and continued on. They didn't even tell us where to go and we could have made our original flight. The later flight they booked us on was delayed an extra 2 hrs. So our flight from San Diego to DC started a 6a and we landed around midnight. Roughly 18 hrs stuck in the most uncomfortable seats, look and feel like military plane KC-10 seats (bare basic metal frame with foam to cover it). No entertainment or charging plugs. Food and soda was priced ridiculous ($3.99 for a can of coke). The only thing free was water. I would never recommend flying this airline unless it was a last minute 1 way hop with only a personal item (i.e. small back pack). I will never book this airline again... Very similar to Spirit (which they are now partners with) which is awful. Again never fly this airline... not even in an emergency. Spend the extra seriously.

Frontier

6.0

Okay

3,353 reviews

Frontier

6.0

Okay

3,353 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

SAN - DEN

Related info for your journey

Can I find deals for flights from Islip to Indianapolis that include hotel bookings?
Yes. In addition to deals on Islip to Indianapolis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Indianapolis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Indianapolis.
Can I find deals for business class flights from Islip to Indianapolis?
Yes. Cheapflights offers flight deals from Islip to Indianapolis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Islip, New York to Indianapolis?
Currently, August is the cheapest month in which you can book a flight from Islip, New York to Indianapolis (average of $297). Flying from Islip, New York to Indianapolis in March is currently the most expensive (average of $360). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Greenwood

Bloomington

Terre Haute

Noblesville

Fishers

Anderson

Carmel

Franklin

Plainfield

Crawfordsville

Kokomo

Muncie

Shelbyville

Speedway

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$80+ Cheap flights from Islip, NY to Indianapolis (ISP - IND)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Indianapolis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Indianapolis

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Find flight deals from Islip to Indianapolis

One-way flights from Islip to IndianapolisSearch for one-way flight options from Islip to Indianapolis. Find affordable one-way fares based on user searches. Data last updated February 21, 2025.

Search for one-way flight options from Islip to Indianapolis. Find affordable one-way fares based on user searches. Data last updated February 21, 2025.

Find flights from Islip to Indianapolis within your budget

Compare providers for flights from Islip to Indianapolis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Indianapolis in February.

Best time to book a flight from Islip to Indianapolis

Have a flexible travel schedule? Discover the best time to fly to Indianapolis from Islip with our price prediction graph.

Travel insights for flights from Islip to Indianapolis

Get recent, data-driven insights about flights from Islip to Indianapolis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Islip, New York to Indianapolis?

Rainfall in Indianapolis by month

Plan your trip to Indianapolis by taking into account the average rainfall totals by month.

Temperature in Indianapolis by month

Plan your trip to Indianapolis by taking into account the average temperature totals by month.

Reviews of airlines servicing Indianapolis

Related info for your journey

Find useful and relevant information for your journey from Islip to Indianapolis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Islip to Indianapolis that include hotel bookings?

How can I find direct flights from Islip to Indianapolis?

Can I find deals for business class flights from Islip to Indianapolis?

What is the cheapest month to book a flight from Islip, New York to Indianapolis?

Traveling to a place near Islip?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to Indianapolis

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

One-way flights from Islip to Indianapolis
Search for one-way flight options from Islip to Indianapolis. Find affordable one-way fares based on user searches. Data last updated February 21, 2025.