$142 Cheap Flights from New York (LGA) to Islip (ISP)

Popular airlines from LaGuardia Airport (LGA) to MacArthur Airport (ISP)

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Cheap Flights from New York to Islip (LGA-ISP)

Prices were available within the past 7 days and start at $142 for one-way flights and $251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
JetBlue Airways
JetBlue Airways
JetBlue Airways
JetBlue Airways
JetBlue Airways
JetBlue Airways
JetBlue Airways
JetBlue Airways
Southwest Airlines

Alternative airports near Islip

Prices were available within the past 7 days. Prices and availability are subject to change.

Flights from New York (LGA) to Islip (ISP)
Origin airport
LaGuardia
Destination airport
MacArthur
Airlines serving
JetBlue Airways, Southwest Airlines
Roundtrip price
$251
Distance
40 mi

New York to Islip Flights

The cheapest times to fly from New York to Islip

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 New York to Islip are during the month of September. You can find some of the cheapest flights from New York to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from New York to Islip

Sunday is one of the best days to book for cheap flights from New York to Islip: 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 New York to Islip

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 New York to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $142 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 New York to Islip 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 New York to Islip 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 LaGuardia Airport (LGA) to MacArthur Airport (ISP) cost?
Discover the latest flight deals from LGA to ISP 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 LGA to ISP?
The cheapest flights from LGA to ISP are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from LGA to ISP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from LGA to ISP. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from LaGuardia Airport (LGA) to MacArthur Airport (ISP)?
You'll need to take a flight with a layover if you're traveling from LaGuardia Airport (LGA) to MacArthur Airport (ISP). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from LGA to ISP?
You'll typically find Tuesday the quietest day for flights, while Fridays are often 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 LaGuardia Airport (LGA) to MacArthur Airport (ISP)?
To reach MacArthur Airport (ISP) without delays, choose a flight that takes off from LaGuardia Airport (LGA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 LaGuardia Airport (LGA) to MacArthur Airport (ISP) last-minute?
Last-minute bookings from LGA to ISP are typically more expensive. To secure the lowest prices, start searching for flights as soon as possible. That said, if you're flexible with your travel dates, you may find a cheap fare right before your trip.
Is it cheaper to book a LGA to ISP flight and hotel package?
You can save money by securing a LGA to ISP flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've selected your ideal flights and accommodations, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from LaGuardia Airport (LGA) to MacArthur Airport (ISP)?
If you booked your LGA to ISP flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket 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, head to our Customer Service portal for further details.

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Islip nearby Airports
New York nearby Airports

Newark Liberty Intl. Airport

White Plains

*Available to One Key members.