$2,072 Cheap Flights from Nantucket (ACK) to Sydney (SYD)

View $2,072 flight on Fri, Sep 26, 2025Opens in a new window

Popular airlines from Nantucket, MA (ACK-Nantucket Memorial) to Sydney Airport (SYD)

Cheap Flights from Nantucket to Sydney (ACK-SYD)

Prices were available within the past 7 days and start at $2,072 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Nantucket (ACK) to Sydney (SYD)
Origin airport
Nantucket Memorial
Destination airport
Kingsford Smith Intl.
Distance
10145 mi

Nantucket to Sydney Flights

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

 

The best time to book a flight from Nantucket to Sydney

Sunday is one of the best days to book for cheap flights from Nantucket 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 Nantucket 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 Nantucket to Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $2,072 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 Nantucket 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 Nantucket 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.

 

Frequently asked questions

How much does a flight from Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD) cost?
Snag a cheap one-way flight from $2,072 or cheap return flight from Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD) 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 Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD)?
is the least expensive month to fly from ACK to SYD. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest ACK to SYD flight.
How many flights per day from Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD)?
There aren't any daily direct flights from Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD). 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 at all.
What day of the week has the most flights from ACK to SYD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD)?
To arrive at Kingsford Smith Intl. Airport (SYD) without delays, opt for a flight that takes off from Nantucket Memorial Airport (ACK) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD) last-minute?
Waiting until just before your trip to book a flight from ACK to SYD often results in higher prices. While you may come across some last-minute deals, they aren't always guaranteed. Keep your travel schedule open to maximize your chances of landing a bargain.
Is it cheaper to book an ACK to SYD flight and hotel package?
You can save money by securing an ACK to SYD 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 choosing your preferred accommodations and flights, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Nantucket Memorial Airport (ACK) to Kingsford Smith Intl. Airport (SYD)?
In most instances, you're able to cancel or reschedule your ACK to SYD flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want more details, go to our Customer Service portal.

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*Available to One Key members.