$150 Cheap Flights from Islip (ISP) to Jacksonville (JAX)

View $150 flight on Fri, Dec 5, 2025Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Jacksonville International Airport (JAX)

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Cheap Flights from Islip to Jacksonville (ISP-JAX)

Prices were available within the past 7 days and start at $150 for one-way flights and $252 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Dec 11 - Tue, Dec 16
ISP
Islip
JAX
Jacksonville
$252 Roundtrip, found 5 days ago
$252
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Thu, Dec 11 from Islip to Jacksonville, returning Tue, Dec 16, priced at $252 found 5 days ago
Southwest Airlines
Thu, Dec 11 - Tue, Dec 16
ISP
Islip
JAX
Jacksonville
$266 Roundtrip, found 5 days ago
$266
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Thu, Dec 11 from Islip to Jacksonville, returning Tue, Dec 16, priced at $266 found 5 days ago
Southwest Airlines
Sat, Nov 15 - Mon, Nov 17
ISP
Islip
JAX
Jacksonville
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Sat, Nov 15 from Islip to Jacksonville, returning Mon, Nov 17, priced at $269 found 6 days ago
Southwest Airlines
Wed, Oct 15 - Wed, Oct 22
ISP
Islip
JAX
Jacksonville
$290 Roundtrip, found 6 days ago
$290
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Wed, Oct 15 from Islip to Jacksonville, returning Wed, Oct 22, priced at $290 found 6 days ago
Southwest Airlines
Thu, Dec 11 - Tue, Dec 16
ISP
Islip
JAX
Jacksonville
$291 Roundtrip, found 5 days ago
$291
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Thu, Dec 11 from Islip to Jacksonville, returning Tue, Dec 16, priced at $291 found 5 days ago
Southwest Airlines
Thu, Dec 11 - Tue, Dec 16
ISP
Islip
JAX
Jacksonville
$294 Roundtrip, found 5 days ago
$294
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Thu, Dec 11 from Islip to Jacksonville, returning Tue, Dec 16, priced at $294 found 5 days ago
Southwest Airlines
Wed, Nov 12 - Mon, Nov 17
ISP
Islip
JAX
Jacksonville
$305 Roundtrip, found 1 day ago
$305
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Nov 12 from Islip to Jacksonville, returning Mon, Nov 17, priced at $305 found 1 day ago
Southwest Airlines
Fri, Dec 5 - Mon, Dec 8
ISP
Islip
JAX
Jacksonville
$306 Roundtrip, found 5 days ago
$306
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Fri, Dec 5 from Islip to Jacksonville, returning Mon, Dec 8, priced at $306 found 5 days ago
JetBlue Airways
Wed, Nov 5 - Thu, Nov 13
ISP
Islip
JAX
Jacksonville
$336 Roundtrip, found 6 days ago
$336
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Wed, Nov 5 from Islip to Jacksonville, returning Thu, Nov 13, priced at $336 found 6 days ago
Breeze Airways
Wed, Feb 11 - Thu, Feb 26
ISP
Islip
JAX
Jacksonville
$448 Roundtrip, found 10 hours ago
$448
Roundtrip
found 10 hours ago
Select Breeze Airways flight, departing Wed, Feb 11 from Islip to Jacksonville, returning Thu, Feb 26, priced at $448 found 10 hours ago

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX) cost?
Lock in a cheap one-way flight from $150 or cheap return flight from $252 from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX)?
Planning your trip for December is a great way to save, as it's the cheapest month for flights between ISP and JAX. You'll often find the lowest prices during the off-season.
Which airlines fly direct from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX)?
You can't fly nonstop to Jacksonville Intl. Airport (JAX) from Islip, NY (ISP-MacArthur). However, you can easily travel to Jacksonville without any layovers by leaving from John F. Kennedy Intl. Airport (JFK).
What is the cheapest airline that flies from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX)?
To find the cheapest airline that'll fly you from ISP to JAX, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX)?
There are no daily direct flights available from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from ISP to JAX?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on various factors, such as the time of year and airline.*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 Jacksonville Intl. Airport (JAX)?
To avoid possible delays on the MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX) route, aim to fly before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Jacksonville Intl. Airport (JAX) last-minute?
Last-minute bookings from ISP to JAX are usually more expensive. To secure the best rates, start looking for flights ahead of time. That said, if you're flexible with your travel dates, you may find a cheap ticket right before you leave.
Is it cheaper to book an ISP to JAX flight and hotel package?
Compared with arranging flights and hotels separately, booking an ISP to JAX flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the hassle out of travel planning. Just pick your flights and select from our extensive range of hotels, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Jacksonville Intl. Airport (JAX)?
In most cases, you can cancel or reschedule your ISP to JAX flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
MacArthur
Destination airport
Jacksonville Intl.
Airlines serving
Breeze Airways, JetBlue Airways, Southwest Airlines
Roundtrip price
$252
Distance
858 mi

Book with confidence

Book with confidence

Islip to Jacksonville Flights

The cheapest times to fly from Islip to Jacksonville

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

 

The best time to book a flight from Islip to Jacksonville

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

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 Jacksonville in 2025. You can also book with separate airlines for your outbound and return journeys, from $150 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 Jacksonville 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 Jacksonville 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.

 

Islip to Jacksonville Flights

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*Available to One Key members.