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$10,585+ Cheap flights from Islip, NY (ISP) to Sydney (SYD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SYD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Islip to Sydney

Best flights from Islip to Sydney
Discover carefully curated flight deals from Islip to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This oojo deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2412:30 pmISP - SYD
2 stops40h 20mMultiple Airlines
Sat 1/3111:05 amSYD - ISP
2 stops40h 00mMultiple Airlines
Deal found 12/9$10,585

Find flight deals from Islip to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$10,585
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,940
Provider with most accurate pricing for Islip Long Island-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Sydney Kingsford Smith flights.
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From Islip Long Island to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($205 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Islip to Sydney that are best for you.

Fly from

Islip

Fly to

Sydney

Route

Depart

Return

Price

IslipSydney

ISP - SYD

ISPSYD

Islip Long Island

Sat 1/24

12:30 pm-8:50 pm

2 stops40h 20m

Sydney Kingsford Smith

Sat 1/31

11:05 am-11:05 am

2 stops40h 00m

$10,585

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

  • Most accurate provider: When it comes to deals on Islip, New York-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Islip with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Islip to Sydney

What is the cheapest month to book a flight from Islip, New York to Sydney?

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Sydney (average of $403). Flying from Islip, New York to Sydney in July is currently the most expensive (average of $1,006). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Islip to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Islip to Sydney that include hotel bookings?

    Yes. In addition to deals on Islip to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Sydney.

  • Can I find deals for business class flights from Islip to Sydney?

    Yes. Cheapflights offers flight deals from Islip to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Sydney?

    Currently, August is the cheapest month in which you can book a flight from Islip, New York to Sydney (average of $403). Flying from Islip, New York to Sydney in July is currently the most expensive (average of $1,006). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

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