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$2,973+ Cheap flights from Islip, NY (ISP) to Australia

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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SYD
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Islip to Australia

Keep the following information in mind while searching for Islip to Australia flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$10,576
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,398
Provider with most accurate pricing for New York (NYC)-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-Sydney Kingsford Smith flights.
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From Islip Long Island to Australia
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Highest demand for flights based on searches. 16% potential increase in price ($276 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($58 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Islip to Australia

Cheapest flights from Islip to Australia
Explore the most affordable flight options available from Islip to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Trip.com deal was found by Cheapflights users on 10/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1310:19 amISP - MEL
2 stops55h 11mMultiple Airlines
Sat 12/204:05 pmMEL - ISP
2 stops37h 04mMultiple Airlines
Deal found 10/29$2,973
This oojo deal was found by Cheapflights users on 10/26. 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.
Thu 12/1112:40 pmISP - MEL
2 stops42h 20mMultiple Airlines
Thu 12/188:40 amMEL - ISP
2 stops42h 24mMultiple Airlines
Deal found 10/26$10,576
This oojo deal was found by Cheapflights users on 10/27. 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.
Fri 12/1212:40 pmISP - MEL
2 stops42h 20mMultiple Airlines
Thu 12/1812:45 amMEL - ISP
2 stops55h 30mMultiple Airlines
Deal found 10/27$10,598
This oojo deal was found by Cheapflights users on 10/28. 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.
Fri 12/1212:40 pmISP - BNE
2 stops43h 20mMultiple Airlines
Thu 12/1812:30 amBNE - ISP
2 stops54h 45mMultiple Airlines
Deal found 10/28$10,601
This oojo deal was found by Cheapflights users on 10/28. 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.
Fri 11/2812:40 pmISP - MEL
2 stops42h 20mMultiple Airlines
Fri 12/58:40 amMEL - ISP
2 stops42h 24mMultiple Airlines
Deal found 10/28$10,632

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Australia 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 October 29, 2025.
Use the filters below to find and compare flights from Islip to Australia that are best for you.

Fly from

Islip

Fly to

Australia

Route

Depart

Return

Price

IslipMelbourne

ISP - MEL

ISPMEL

Islip Long Island

Sat 12/13

10:19 am-9:30 am

2 stops55h 11m

Melbourne

Sat 12/20

4:05 pm-1:09 pm

2 stops37h 04m

$2,973

IslipMelbourne

ISP - MEL

ISPMEL

Islip Long Island

Fri 12/12

12:40 pm-11:00 pm

2 stops42h 20m

Melbourne

Fri 12/19

3:35 pm-11:04 am

2 stops59h 29m

$10,576

IslipMelbourne

ISP - MEL

ISPMEL

Islip Long Island

Thu 12/11

12:40 pm-11:00 pm

2 stops42h 20m

Melbourne

Thu 12/18

8:40 am-11:04 am

2 stops42h 24m

$10,576

IslipBrisbane

ISP - BNE

ISPBNE

Islip Long Island

Fri 12/12

12:40 pm-11:00 pm

2 stops43h 20m

Brisbane

Thu 12/18

12:30 am-4:15 pm

2 stops54h 45m

$10,601

IslipMelbourne

ISP - MEL

ISPMEL

Islip Long Island

Fri 11/28

12:40 pm-11:00 pm

2 stops42h 20m

Melbourne

Fri 12/5

8:40 am-11:04 am

2 stops42h 24m

$10,632

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Best time to book a flight from Islip to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

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

Currently, September is the cheapest month in which you can book a flight from Islip, New York to Australia (average of $168). Flying from Islip, New York to Australia 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 Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Islip to Australia?

    If you book a flight to Australia from Islip, you will be flying from Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

  • What are the most popular routes from Islip, New York to Australia?

    The most popular route from Islip, New York to Australia is Islip Long Island - Melbourne. You may also consider Islip Long Island - Sydney Kingsford Smith or Islip Long Island - Brisbane.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Islip to Australia 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 Australia?

    Currently, September is the cheapest month in which you can book a flight from Islip, New York to Australia (average of $168). Flying from Islip, New York to Australia 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

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