$495 Find Cheap Flights from Ontario to Australia - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Australia departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Ontario to Australia

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sydney
Sydney1 stop$1,002
Brisbane
Brisbane1 stop$1,088
Perth
Perth2 stops$1,482
Sydney
Sydney1 stop$1,002
Brisbane
Brisbane1 stop$1,088
Perth
Perth2 stops$1,482

Book Cheap Ontario to Australia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Australia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Australia

Tue, Sep 22 - Tue, Sep 29
Multiple Airlines Logo
9:31 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
40h 19m1 stop Honolulu
Multiple Airlines Logo
8:45 pm - 10:10 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 25m1 stop Honolulu
$1,002Multiple Airlines
Mon, Oct 19 - Sun, Nov 1
Multiple Airlines Logo
7:00 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
17h 50m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 9:42 pmSYD  Sydney Kingsford Smith-ONT Ontario
19h 02m1 stop Honolulu
$1,002Multiple Airlines
Tue, Sep 29 - Tue, Oct 13
Multiple Airlines Logo
9:31 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
40h 19m1 stop Honolulu
Multiple Airlines Logo
8:45 pm - 9:29 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 44m1 stop Honolulu
$1,002Multiple Airlines
Sun, Sep 6 - Sun, Sep 20
Multiple Airlines Logo
9:31 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
40h 19m1 stop Honolulu
Multiple Airlines Logo
8:45 pm - 10:10 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 25m1 stop Honolulu
$1,002Multiple Airlines
Mon, Oct 19 - Tue, Nov 3
Multiple Airlines Logo
7:00 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
17h 50m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 9:42 pmSYD  Sydney Kingsford Smith-ONT Ontario
19h 02m1 stop Honolulu
$1,002Multiple Airlines
Wed, Oct 21 - Sun, Nov 1
Multiple Airlines Logo
7:00 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
17h 50m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 9:42 pmSYD  Sydney Kingsford Smith-ONT Ontario
19h 02m1 stop Honolulu
$1,002Multiple Airlines
Tue, Sep 1 - Sun, Sep 20
Multiple Airlines Logo
9:31 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
40h 19m1 stop Honolulu
Multiple Airlines Logo
8:45 pm - 10:10 pmSYD  Sydney Kingsford Smith-ONT Ontario
18h 25m1 stop Honolulu
$1,002Multiple Airlines
Wed, Oct 14 - Sun, Oct 25
Multiple Airlines Logo
7:00 am - 6:50 pmONT  Ontario-SYD Sydney Kingsford Smith
17h 50m1 stop Honolulu
Multiple Airlines Logo
9:40 pm - 9:29 pmSYD  Sydney Kingsford Smith-ONT Ontario
17h 49m1 stop Honolulu
$1,002Multiple Airlines
Thu, Nov 26 - Sun, Dec 20
United Airlines Logo
12:30 pm - 7:30 amONT  Ontario-BNE Brisbane
25h 00m1 stop San Francisco
United Airlines Logo
11:40 am - 12:15 pmBNE  Brisbane-ONT Ontario
18h 35m1 stop San Francisco
$1,088United Airlines
Fri, Aug 28 - Tue, Sep 1
United Airlines Logo
7:13 pm - 6:30 amONT  Ontario-BNE Brisbane
18h 17m1 stop San Francisco
United Airlines Logo
10:30 am - 12:12 pmBNE  Brisbane-ONT Ontario
18h 42m1 stop San Francisco
$1,091United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Australia flights

Get data-powered insights and trends into flights from Ontario to Australia to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Ontario and Australia?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Australia.

There is just one airline that flies from Ontario to Australia direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is to Melbourne Airport (MEL) and costs $1,049.

Which airlines provide the cheapest flights from Ontario to Australia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Ontario to Australia were found on Delta ($1,048) and United Airlines ($1,091).

Find deals

Good to know

Cheapest flight

$495
Flight from Ontario to Sydney

FAQs - booking Australia flights

  • How does KAYAK find such low prices on flights from Ontario to Australia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Australia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Australia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Australia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Australia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to Australia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Australia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Australia

 
Need help choosing which airline to fly with from Ontario to Australia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10114 reviews
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
6.7Food
Airline reviews

The seats were very uncomfortable. I paid for the front economy. i swear they added a row of seats in there. It was so tight, that I could measure the distance between my seat and the one in front from my elbow to the tips of my fingers plus six inches. The seat cushion was completely worn out. The dinner was very good. Thank you for having a vegetarian option as a standard. But breakfast was nothing but sugar. that's not food. The crew was crabby and rude, especially in regards to coming to the back gallery. And the entertainment choice: why would you put violent movies on the choice? the Godfather? Some movies with black women being beaten over the head with clubs? What the heck? You know that when there is a movie on a plane, everyone gets to watch it. Why choose the most violent titles possible? The total number of movies were very limited, and the television, even more so. No games were available on the set. The wellness section was nice, thank you. I appreciated a galley in the middle where I could stand. The seats were unbearable.

4.0 OkayKirstin, Jul 2026
Read more United Airlines reviews

The seats were very uncomfortable. I paid for the front economy. i swear they added a row of seats in there. It was so tight, that I could measure the distance between my seat and the one in front from my elbow to the tips of my fingers plus six inches. The seat cushion was completely worn out. The dinner was very good. Thank you for having a vegetarian option as a standard. But breakfast was nothing but sugar. that's not food. The crew was crabby and rude, especially in regards to coming to the back gallery. And the entertainment choice: why would you put violent movies on the choice? the Godfather? Some movies with black women being beaten over the head with clubs? What the heck? You know that when there is a movie on a plane, everyone gets to watch it. Why choose the most violent titles possible? The total number of movies were very limited, and the television, even more so. No games were available on the set. The wellness section was nice, thank you. I appreciated a galley in the middle where I could stand. The seats were unbearable.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

Smooth flight. As always dinner could have been more generous. Breakfast was great.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

Moody attendants that can barely look up at the passengers. I’m all for people having an off day, but you can tell some Untied Airlines Employees have lost their zeal for their jobs

Great checkin experience and flight crew were very friendly and helpful

Everything you need to know for your flight from Ontario to Australia

Information on your arrival and departure airports

Ontario (ONT)