Cheap Flights from Islip (ISP) to Sydney (SYD)

Popular airlines from MacArthur Airport (ISP) to Sydney Airport (SYD)

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD) cost?
Get a cheap one-way flight or cheap return flight from MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD) 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 Kingsford Smith Intl. Airport (SYD)?
The cheapest month to fly from ISP to SYD is , when there's less demand. Off-peak season is usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ISP to SYD flight.
How many flights per day from MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD)?
Direct flights from MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD) 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 dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ISP to SYD?
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 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 Kingsford Smith Intl. Airport (SYD)?
Book a flight from MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time 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 MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD) last-minute?
Holding off until right before your break to book a flight from ISP to SYD often results in higher prices. While you might find some last-minute offers, they aren't always guaranteed. Be flexible with your travel plans for the best chance of scoring a bargain.
Is it cheaper to book an ISP to SYD flight and hotel package?
Opting for an ISP to SYD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our impressive range of stays and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Kingsford Smith Intl. Airport (SYD)?
You can usually reschedule or cancel your ISP to SYD flight. However, if it's been more than 24 hours since booking, additional charges 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 details on our Customer Service portal.

Travel information

Origin airport
MacArthur
Destination airport
Kingsford Smith Intl.
Distance
9986 mi

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Islip to Sydney Flights

The cheapest times to fly from Islip to Sydney

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

 

The best time to book a flight from Islip to Sydney

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

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 Sydney in 2026. 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 Sydney 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 Sydney 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 Sydney Flights

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*Available to One Key members.