Cheap Flights from Morristown (MMU) to Islip (ISP)

Popular airlines from Morristown, NJ (MMU-Morristown Municipal) to MacArthur Airport (ISP)

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Flights from Morristown (MMU) to Islip (ISP)
Origin airport
Morristown Municipal
Destination airport
MacArthur
Distance
69 mi

Morristown to Islip Flights

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

 

The best time to book a flight from Morristown to Islip

Sunday is one of the best days to book for cheap flights from Morristown 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 Morristown 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 Morristown to Islip 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 Morristown 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 Morristown 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 Morristown Municipal Airport (MMU) to MacArthur Airport (ISP) cost?
Discover the latest flight deals from MMU 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 MMU to ISP?
The cheapest flights from MMU 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 MMU to ISP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from MMU to ISP. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Morristown Municipal Airport (MMU) to MacArthur Airport (ISP)?
You'll need to catch a flight with a layover if you're traveling from Morristown Municipal Airport (MMU) 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 find the best option for your trip.
What day of the week has the most flights from MMU to ISP?
You'll usually 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 Morristown Municipal Airport (MMU) to MacArthur Airport (ISP)?
To avoid possible delays on the Morristown Municipal Airport (MMU) to MacArthur Airport (ISP) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of being 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 Morristown Municipal Airport (MMU) to MacArthur Airport (ISP) last-minute?
Booking your ticket from MMU to ISP shortly before your getaway is typically more expensive. But if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a MMU to ISP flight and hotel package?
You'll typically save money by securing a MMU 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 easy to manage it all in one place. After selecting your ideal flights and accommodations, you can add extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Morristown Municipal Airport (MMU) to MacArthur Airport (ISP)?
Typically, you can cancel or reschedule your MMU to ISP flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want more details, go to our Customer Service portal.

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*Available to One Key members.