Cheap Flights from Islip (ISP) to Ithaca (ITH)

Popular airlines from MacArthur Airport (ISP) to Ithaca, NY (ITH-Tompkins Regional)

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Find available prices by choosing your travel dates.
Flights from Islip (ISP) to Ithaca (ITH)
Origin airport
MacArthur
Destination airport
Tompkins Regional
Distance
209 mi

Islip to Ithaca Flights

The cheapest times to fly from Islip to Ithaca

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to Ithaca are during the month of . You can find some of the cheapest flights from Islip to Ithaca with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Islip to Ithaca

Sunday is one of the best days to book for cheap flights from Islip to Ithaca: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Islip to Ithaca

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to Ithaca in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to Ithaca flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to Ithaca airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH) cost?
Discover the latest flight deals from ISP to ITH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ISP to ITH?
The cheapest flights from ISP to ITH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH)?
There’s no direct route from Islip, NY (ISP-MacArthur) to Tompkins Regional Airport (ITH). However, you can find other airports with nonstop flights. Board your plane at John F. Kennedy Intl. Airport (JFK) and head straight to Ithaca without any detours.
What is the cheapest airline that flies from ISP to ITH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from ISP to ITH. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH)?
Nonstop flights from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH) aren’t available daily, so you’ll have to take a flight with a layover. Explore your options with Expedia’s filter tool. Enter your travel details and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from ISP to ITH?
You’ll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH)?
Opt for a flight from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH) last-minute?
Booking your plane ticket from ISP to ITH right before your trip is usually more expensive. However, if there’s some wiggle room with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an ISP to ITH flight and hotel package?
Compared with arranging flights and hotels separately, booking an ISP to ITH flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of stays, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Tompkins Regional Airport (ITH)?
If you booked your ISP to ITH flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

Explore a world of travel with Expedia

*Available to One Key members.