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$10,372+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SYD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap 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 July 3, 2025.

Round-trip from

$10,372
(Gotogate)

Popular in

December

Cheapest in

February

Average price

$1,417
From Islip Long Island to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($216 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Islip to Sydney

Cheapest flights from Islip to Sydney
Explore the most affordable flight options available from Islip to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Gotogate deal was found by Cheapflights users on 7/2. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/164:33 pmISP - SYD
2 stops37h 37mMultiple Airlines
Sat 8/2310:10 amSYD - ISP
2 stops41h 14mMultiple Airlines
Deal found 7/2$10,372

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 July 3, 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 8/16

4:33 pm-8:10 pm

2 stops37h 37m

Sydney Kingsford Smith

Sat 8/23

10:10 am-1:24 pm

2 stops41h 14m

$10,372

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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, February is the cheapest month in which you can book a flight from Islip, New York to Sydney (average of $1,040). Flying from Islip, New York to Sydney in December is currently the most expensive (average of $1,630). 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, February is the cheapest month in which you can book a flight from Islip, New York to Sydney (average of $1,040). Flying from Islip, New York to Sydney in December is currently the most expensive (average of $1,630). 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 Islip?

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

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