$10,558+ Cheap flights from Islip (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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SYD
Oct 11 — Oct 181
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Islip to Australia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 September 11, 2025.
Round-trip from | $10,558 (oojo) |
|---|---|
Popular in | December |
Cheapest in | February |
Average price | $1,413 |
Find flight deals from Islip to Australia
Cheapest flights from Islip to AustraliaExplore 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 September 11, 2025.
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 September 11, 2025.
This oojo deal was found by Cheapflights users on 9/9. 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.
Thu 10/234:33 pmISP - MEL
2 stops39h 42mMultiple Airlines
Wed 10/2912:45 amMEL - ISP
2 stops49h 13mMultiple Airlines
Deal found 9/9![Multiple Airlines logo]()
$10,558
This oojo deal was found by Cheapflights users on 9/9. 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.
Fri 12/192:19 pmISP - SYD
2 stops38h 31mMultiple Airlines
Tue 1/138:45 amSYD - ISP
2 stops42h 13mMultiple Airlines
Deal found 9/9![Multiple Airlines logo]()
$10,565
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 September 11, 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
Thu 10/23
4:33 pm-11:15 pm
2 stops39h 42m
Melbourne
Wed 10/29
12:45 am-10:58 am
2 stops49h 13m
$10,558
IslipMelbourne
ISP - MEL
ISPMEL
Islip Long Island
Sun 10/26
2:19 pm-11:00 pm
2 stops41h 41m
Melbourne
Sun 11/2
3:35 pm-11:58 am
2 stops59h 23m
$10,559
IslipSydney
ISP - SYD
ISPSYD
Islip Long Island
Fri 12/19
2:19 pm-8:50 pm
2 stops38h 31m
Sydney Kingsford Smith
Tue 1/13
8:45 am-10:58 am
2 stops42h 13m
$10,565
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 to Australia?
Currently, February is the cheapest month in which you can book a flight from Islip to Australia (average of $1,035). Flying from Islip to Australia in December is currently the most expensive (average of $1,626). 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.