$447 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 8/1. 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

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Best Australia Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney2 stops$1,022
Brisbane
Brisbane1 stop$1,063
Perth
Perth2 stops$1,936
Sydney
Sydney2 stops$1,022
Brisbane
Brisbane1 stop$1,063
Perth
Perth2 stops$1,936

Cheap Flights from Ontario to Australia (ONT-AU0)

 
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

Sun, Jun 15 - Fri, Jul 18
Delta Logo
1:15 pm - 6:35 amONT-SYD
24h 20m2 stops
Delta Logo
9:25 am - 11:42 pmSYD-ONT
31h 17m2 stops
$1,022Delta
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Tue, Jul 1 - Tue, Jul 22
United Airlines Logo
6:39 pm - 6:55 amONT-SYD
19h 16m1 stop
United Airlines Logo
10:20 am - 5:43 pmSYD-ONT
24h 23m1 stop
$1,058United Airlines
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Wed, Oct 29 - Thu, Nov 6
Alaska Airlines Logo
9:50 am - 7:45 pmONT-SYD
39h 55m1 stop
Alaska Airlines Logo
9:40 pm - 9:55 pmSYD-ONT
19h 15m1 stop
$1,075Alaska Airlines
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Fri, Aug 15 - Tue, Oct 28
Alaska Airlines Logo
9:00 am - 7:45 pmONT-SYD
17h 45m1 stop
Alaska Airlines Logo
9:40 pm - 9:55 pmSYD-ONT
18h 15m1 stop
$1,133Alaska Airlines
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Tue, Sep 2 - Tue, Sep 9
 Logo
12:45 am - 5:30 amONT-MEL
35h 45m3 stops
 Logo
12:30 am - 6:40 pmMEL-ONT
35h 10m2 stops
$1,174
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Tue, Sep 2 - Tue, Sep 9
 Logo
12:45 am - 10:35 pmONT-MEL
28h 50m2 stops
 Logo
12:30 am - 6:40 pmMEL-ONT
35h 10m2 stops
$1,180
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Sun, Nov 23 - Sat, Dec 6
Hawaiian Airlines Logo
4:05 pm - 7:45 pmONT-SYD
32h 40m2 stops
Hawaiian Airlines Logo
9:40 pm - 9:55 pmSYD-ONT
19h 15m1 stop
$1,449Hawaiian Airlines
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Tue, Jul 1 - Fri, Jul 25
American Airlines Logo
6:10 am - 10:20 amONT-MEL
35h 10m2 stops
American Airlines Logo
3:05 pm - 10:57 pmMEL-ONT
24h 52m1 stop
$1,563American Airlines
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Fri, Jun 20 - Tue, Jul 1
Hawaiian Airlines Logo
9:00 am - 7:45 pmONT-SYD
17h 45m1 stop
Hawaiian Airlines Logo
9:40 pm - 9:23 amSYD-ONT
28h 43m2 stops
$1,607Hawaiian Airlines
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Tue, Jul 1 - Sat, Jul 19
American Airlines Logo
6:10 am - 10:20 amONT-MEL
35h 10m2 stops
American Airlines Logo
5:00 pm - 1:47 pmMEL-ONT
37h 47m2 stops
$2,342American Airlines
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Useful Info

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.

What’s the cheapest day of the week to fly from Ontario to Australia?

The average price of all round-trip flights from Ontario to Australia clicked on KAYAK for each day over the last 12 months.

When flying from Ontario to Australia, you should consider leaving on a Saturday and avoid Wednesdays if you are looking for the best rates. For your return to Ontario, you’ll find the best rates on Thursdays and the most expensive ones on Tuesdays.


Good to know

Low seasonApril
High seasonNovember
Cheapest flight$447
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 10% 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.

Top airlines 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.
7.5
Qantas AirwaysOverall score based on 844 reviews
7.7Boarding
7.2Entertainment
8.2Crew
6.9Food
7.4Comfort
Airline reviews

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

2.0 MediocreAnonymous, May 2025AYQ - SYD
Read more Qantas Airways reviews

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

Loved the staff. The economy seats could have been bigger.

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

I liked the service, the menu, and the comfort of the seats! Even tho we were seated by the bathrooms, the reclining seats and movie selection was very good, my husband and I didn’t mind at all

Very good as always, stand out airline. The passengers whom choose to stuff baggage that otherwise should be checked-in is a real bother but that's not the airlines doing. A real frustration that passengers just don't want to check-in luggage. This is a pet hate unfortunately.

It’s a two prop flight so I had problems with my ears on re- entering ! But otherwise fine

I love flying with Qantas. There was no onscreen entertaining on this flight, and only a snack provided (not a meal) but still better than Jetstar or Virgin (in my opinion) so still happy.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The gate was too far away for the connecting flight

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

Information on your arrival and departure airports

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