$119 Cheap Flights from Newark Liberty Intl. Airport (EWR) to Islip (ISP)

View $119 flight on Thu, Nov 20, 2025Opens in a new window

Popular airlines from Newark Liberty Intl. Airport (EWR) to MacArthur Airport (ISP)

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Cheap Flights from Newark Liberty Intl. Airport to Islip (EWR-ISP)

Prices were available within the past 7 days and start at $119 for one-way flights and $242 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, Nov 11 - Tue, Nov 18
EWR
New York
ISP
Islip
$242 Roundtrip, found 1 day ago
$242
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Nov 11 from New York to Islip, returning Tue, Nov 18, priced at $242 found 1 day ago
JetBlue Airways
Tue, Oct 21 - Wed, Nov 5
EWR
New York
ISP
Islip
$255 Roundtrip, found 20 hours ago
$255
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Tue, Oct 21 from New York to Islip, returning Wed, Nov 5, priced at $255 found 20 hours ago
JetBlue Airways
Tue, Oct 7 - Tue, Oct 28
EWR
New York
ISP
Islip
$260 Roundtrip, found 23 hours ago
$260
Roundtrip
found 23 hours ago
Select JetBlue Airways flight, departing Tue, Oct 7 from New York to Islip, returning Tue, Oct 28, priced at $260 found 23 hours ago
JetBlue Airways
Thu, Nov 20 - Tue, Dec 9
EWR
New York
ISP
Islip
$265 Roundtrip, found 20 hours ago
$265
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Thu, Nov 20 from New York to Islip, returning Tue, Dec 9, priced at $265 found 20 hours ago
JetBlue Airways
Wed, Nov 12 - Thu, Dec 4
EWR
New York
ISP
Islip
$270 Roundtrip, found 20 hours ago
$270
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Wed, Nov 12 from New York to Islip, returning Thu, Dec 4, priced at $270 found 20 hours ago
JetBlue Airways
Tue, Oct 7 - Sat, Oct 18
EWR
New York
ISP
Islip
$273 Roundtrip, found 5 hours ago
$273
Roundtrip
found 5 hours ago
Select JetBlue Airways flight, departing Tue, Oct 7 from New York to Islip, returning Sat, Oct 18, priced at $273 found 5 hours ago
JetBlue Airways
Thu, Nov 20 - Fri, Dec 12
EWR
New York
ISP
Islip
$275 Roundtrip, found 20 hours ago
$275
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Thu, Nov 20 from New York to Islip, returning Fri, Dec 12, priced at $275 found 20 hours ago
JetBlue Airways
Mon, Nov 3 - Sat, Nov 15
EWR
New York
ISP
Islip
$277 Roundtrip, found 20 hours ago
$277
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Mon, Nov 3 from New York to Islip, returning Sat, Nov 15, priced at $277 found 20 hours ago
JetBlue Airways
Fri, Oct 17 - Wed, Nov 5
EWR
New York
ISP
Islip
$280 Roundtrip, found 20 hours ago
$280
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Fri, Oct 17 from New York to Islip, returning Wed, Nov 5, priced at $280 found 20 hours ago
JetBlue Airways
Mon, Nov 3 - Tue, Nov 18
EWR
New York
ISP
Islip
$282 Roundtrip, found 20 hours ago
$282
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Mon, Nov 3 from New York to Islip, returning Tue, Nov 18, priced at $282 found 20 hours ago

Frequently asked questions

How much does a flight from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP) cost?
Get a cheap one-way flight from $119 or cheap return flight from $242 from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP)?
The cheapest month to fly from EWR to ISP is November, when there's less demand. Off-peak months are generally when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from EWR to ISP. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP)?
Direct flights from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP) 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 choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from EWR to ISP?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP)?
Book a flight from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this have a 22% higher chance of being canceled, on average.**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 Liberty Intl. Airport (EWR) to MacArthur Airport (ISP) last-minute?
Booking your ticket from EWR to ISP right before your trip is generally 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 EWR to ISP flight and hotel package?
You'll typically save money by securing an EWR to ISP flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your preferred accommodations and flights, you can add extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Liberty Intl. Airport (EWR) to MacArthur Airport (ISP)?
If you reserved your EWR to ISP flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

Travel information

Travel information

Origin airport
Newark Liberty Intl. Airport
Destination airport
MacArthur
Airlines serving
JetBlue Airways
Roundtrip price
$242
Distance
56 mi

Book with confidence

Book with confidence

Newark Liberty Intl. Airport to Islip Flights

The cheapest times to fly from Newark Liberty Intl. Airport 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 Newark Liberty Intl. Airport to Islip are during the month of November. You can find some of the cheapest flights from Newark Liberty Intl. Airport to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Newark Liberty Intl. Airport to Islip

Sunday is one of the best days to book for cheap flights from Newark Liberty Intl. Airport 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 Newark Liberty Intl. Airport 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 Newark Liberty Intl. Airport to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $119 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 Newark Liberty Intl. Airport 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 Newark Liberty Intl. Airport 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.

 

Newark Liberty Intl. Airport to Islip Flights

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*Available to One Key members.