$464 Find Cheap Flights from Ontario to Australia

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 2/7. 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 72 hours
Sydney
Sydney1 stop$950
Brisbane
Brisbane1 stop$970
Perth
Perth3 stops$1,564
Sydney
Sydney1 stop$950
Brisbane
Brisbane1 stop$970
Perth
Perth3 stops$1,564

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

Wed, Nov 19 - Sun, Nov 23
United Airlines Logo
6:05 am - 7:00 amONT-SYD
29h 55m1 stop
United Airlines Logo
12:10 pm - 5:34 pmSYD-ONT
24h 24m1 stop
$950United Airlines
Find Deal
Sun, Dec 7 - Tue, Dec 23
United Airlines Logo
1:50 pm - 6:20 amONT-SYD
21h 30m1 stop
United Airlines Logo
12:10 pm - 10:01 amSYD-ONT
16h 51m1 stop
$960United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 22
American Airlines Logo
12:55 pm - 9:30 amONT-MEL
25h 35m2 stops
American Airlines Logo
12:00 pm - 3:50 pmMEL-ONT
22h 50m2 stops
$1,076American Airlines
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Sat, Jan 3 - Wed, Jan 14
Alaska Airlines Logo
8:00 am - 7:45 pmONT-SYD
40h 45m1 stop
Alaska Airlines Logo
9:40 pm - 10:28 pmSYD-ONT
19h 48m1 stop
$1,077Alaska Airlines
Find Deal
Sun, Jan 4 - Wed, Jan 14
Alaska Airlines Logo
8:00 am - 7:45 pmONT-SYD
40h 45m1 stop
Alaska Airlines Logo
9:40 pm - 10:28 pmSYD-ONT
19h 48m1 stop
$1,083Alaska Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 22
American Airlines Logo
11:59 pm - 5:00 amONT-MEL
34h 01m1 stop
American Airlines Logo
12:00 pm - 6:16 pmMEL-ONT
25h 16m2 stops
$1,084American Airlines
Find Deal
Sun, Jan 4 - Mon, Jan 12
Multiple Airlines Logo
8:00 am - 7:35 amONT-MEL
52h 35m2 stops
Multiple Airlines Logo
9:00 pm - 10:28 pmMEL-ONT
44h 28m2 stops
$1,295Multiple Airlines
Find Deal
Mon, Jan 5 - Mon, Jan 12
Multiple Airlines Logo
8:00 am - 11:35 pmONT-MEL
44h 35m2 stops
Multiple Airlines Logo
9:00 pm - 10:28 pmMEL-ONT
44h 28m2 stops
$1,393Multiple Airlines
Find Deal
Fri, Apr 17 - Sat, May 2
Qatar Airways Logo
6:00 am - 6:40 pmONT-PER
45h 40m2 stops
Qatar Airways Logo
10:45 pm - 10:38 pmPER-ONT
38h 53m2 stops
$1,693Qatar Airways
Find Deal
Sun, Feb 1 - Sun, Mar 1
Qatar Airways Logo
11:53 am - 12:20 pmONT-PER
32h 27m2 stops
Qatar Airways Logo
10:45 pm - 6:17 pmPER-ONT
35h 32m2 stops
$1,780Qatar Airways
Find Deal
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 Sydney (SYD) and costs $926.

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 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Australia were found on United Airlines ($950) and American Airlines ($1,076).

Good to know

Low seasonSeptember
Cheapest flight$464
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 3% lower on average.
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.

  • What is the cheapest time of day to fly to Australia?

    The cheapest time of day to fly to Australia is generally in the morning, when round-trip flights cost $969 on average. Morning departures are around 26% cheaper than evening flights, on average. The most expensive time of day to fly to Australia is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,303.

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 9002 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

6.0 GoodWilliam Drew, Nov 2025SFO - SJO
Read more United Airlines reviews

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

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

Information on your arrival and departure airports

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