Cheap Flights from Islip (ISP) to St. Augustine (UST)

Popular airlines from MacArthur Airport (ISP) to St. Augustine, FL (UST-Northeast Florida Regional)

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST) cost?
Get a cheap one-way flight or cheap return flight from MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST)?
The cheapest month to fly from ISP to UST is , when demand is low. Off-peak season is typically when airlines offer lower prices between these airports.
What is the cheapest airline that flies from MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST)?
To find the cheapest airline flying from ISP to UST, use Expedia's filter tool. Customize 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 see the cheapest fares upfront.
How many flights per day from MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST)?
Nonstop flights from MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ISP to UST?
You'll generally 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 MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST)?
To land at Northeast Florida Regional Airport (UST) on schedule, select a flight that leaves from MacArthur Airport (ISP) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Northeast Florida Regional Airport (UST) last-minute?
Last-minute bookings from ISP to UST are typically more expensive. To lock in the best prices, start looking for flights well ahead of time. That said, if your travel plans are flexible, you may land a cheap ticket right before your journey.
Is it cheaper to book an ISP to UST flight and hotel package?
You'll typically save money by booking an ISP to UST 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 convenient place. Once you've chosen your preferred accommodations and flights, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Northeast Florida Regional Airport (UST)?
It's generally possible to cancel or reschedule your ISP to UST flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
MacArthur
Destination airport
Northeast Florida Regional
Distance
879 mi

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Islip to St. Augustine Flights

The cheapest times to fly from Islip to St. Augustine

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

 

The best time to book a flight from Islip to St. Augustine

Sunday is one of the best days to book for cheap flights from Islip to St. Augustine: 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 St. Augustine

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 St. Augustine 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 St. Augustine 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 St. Augustine 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 St. Augustine Flights

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*Available to One Key members.