Find flights
When to book
Airlines
FAQs

Cheap flights from Australia to Ontario from $704

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Australia to Ontario
Explore the most affordable flight options available from Australia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Fri 30/111:40
BNE
-
ONT
1 stop17h 38m
United Airlines
Thu 5/213:24
ONT
-
BNE
2 stops24h 06m
United Airlines
Deal found 24/1$1,198
Fri 30/111:40
BNE
-
ONT
1 stop17h 38m
United Airlines
Fri 13/218:37
ONT
-
BNE
1 stop18h 53m
United Airlines
Deal found 26/1$1,202
Wed 28/111:40
BNE
-
ONT
1 stop24h 03m
United Airlines
Sat 7/218:32
ONT
-
BNE
1 stop18h 58m
United Airlines
Deal found 26/1$1,204
Sat 31/111:40
BNE
-
ONT
1 stop18h 37m
United Airlines
Sat 7/213:24
ONT
-
BNE
2 stops24h 06m
United Airlines
Deal found 26/1$1,205
Thu 5/221:40
SYD
-
ONT
1 stop19h 48m
Hawaiian Airlines
Tue 10/208:13
ONT
-
SYD
1 stop40h 32m
Hawaiian Airlines
Deal found 25/1$1,425
Sun 25/121:40
SYD
-
ONT
1 stop19h 48m
Multiple Airlines
Wed 4/208:13
ONT
-
SYD
1 stop40h 32m
Multiple Airlines
Deal found 23/1$1,498
Thu 5/213:05
SYD
-
ONT
2 stops28h 23m
Multiple Airlines
Tue 10/208:13
ONT
-
SYD
1 stop40h 32m
Multiple Airlines
Deal found 25/1$1,516
Thu 26/207:05
BNE
-
ONT
2 stops28h 36m
United Airlines
Mon 2/313:45
ONT
-
BNE
2 stops47h 45m
United Airlines
Deal found 24/1$1,527
Tue 3/221:40
SYD
-
ONT
1 stop19h 48m
Multiple Airlines
Wed 11/208:13
ONT
-
SYD
1 stop40h 32m
Multiple Airlines
Deal found 24/1$1,530
Fri 20/312:00
MEL
-
ONT
1 stop18h 18m
United Airlines
Sat 28/313:50
ONT
-
MEL
2 stops25h 25m
United Airlines
Deal found 24/1$1,534
Mon 26/112:10
SYD
-
ONT
1 stop18h 08m
United Airlines
Sun 8/218:39
ONT
-
SYD
1 stop19h 36m
United Airlines
Deal found 24/1$1,536
Sat 31/111:40
BNE
-
ONT
1 stop18h 37m
United Airlines
Sat 28/318:37
ONT
-
BNE
2 stops22h 53m
United Airlines
Deal found 25/1$1,536

Find flight deals from Australia to Ontario

Keep the following information in mind while searching for Australia to Ontario flight deals. Data was last updated 27 January 2026.

Round-trip from

$1,204

One-way from

$704

Popular in

December

Cheapest in

August

Average price

$1,241
United Airlines
  • United Airlines
  • 16/2-19/2
  • 2 total stops
  • 42h 38m total
  • Australia to Ontario
Search Deals
United Airlines
  • United Airlines
  • 12/2
  • 2 total stops
  • 28h 19m total
  • Australia to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($151 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($44 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Australia to Ontario 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 647,157 searches. Data last updated 27 January 2026.
Use the filters below to find and compare flights from Australia to Ontario that are best for you.

Fly from

Australia

Fly to

Ontario

Route

Depart

Return

Price

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Thu 5/3

11:40-17:41

1 stop24h 01m

Ontario

Sun 15/3

18:37-06:30

1 stop18h 53m

$1,204

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Mon 16/2

11:40-12:38

1 stop18h 58m

Ontario

Thu 19/2

13:50-07:30

1 stop23h 40m

$1,204

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Thu 12/3

10:40-17:41

1 stop24h 01m

Ontario

Thu 19/3

13:40-06:30

1 stop23h 50m

$1,205

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Tue 24/2

11:40-17:41

1 stop24h 01m

Ontario

Tue 3/3

06:10-07:30

1 stop31h 20m

$1,205

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Wed 18/2

11:40-12:48

1 stop19h 08m

Ontario

Sun 22/2

18:37-07:30

1 stop18h 53m

$1,205

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Wed 1/4

10:30-12:14

1 stop18h 44m

Ontario

Sat 11/4

06:05-06:30

2 stops55h 25m

$1,503

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Thu 26/2

07:05-17:41

2 stops28h 36m

Ontario

Mon 2/3

13:45-07:30

2 stops47h 45m

$1,527

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 5/2

21:40-22:28

1 stop19h 48m

Ontario

Wed 11/2

08:13-19:45

1 stop40h 32m

$1,530

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 20/3

12:00-12:18

1 stop18h 18m

Ontario

Fri 27/3

18:37-09:00

1 stop20h 23m

$1,534

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 20/3

12:00-17:41

1 stop23h 41m

Ontario

Sat 28/3

13:40-09:15

1 stop25h 35m

$1,534

Flights are sorted by cheapest return flights first.

Deals found on 24/1

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Australia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Australia with our price prediction graph.
Estimated return 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 Australia to Ontario

What is the cheapest month to book a flight from Australia to Ontario?

Currently, March is the cheapest month in which you can book a flight from Australia to Ontario (average of $809). Flying from Australia to Ontario in December is currently the most expensive (average of $932). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 27 January 2026.
Check out reviews from past customers who have flown with United Airlines from Australia to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,205 reviews
Check prices

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,205 reviews
United Airlines
7.4
Good
9,205 reviews
Check prices

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Australia to Ontario. 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 into for flights to Ontario from Australia?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Australia. Ontario is conveniently located just 4.9 km from Ontario’s city centre.

  • How long is the flight from Australia to Ontario?

    United Airlines can get you from Australia to Ontario in just under 24h 01m. Your travel time can differ by up to . The distance between Australia and Ontario is about 11599 km.

  • What are the most popular routes from Australia to Ontario?

    While some choose either Melbourne - Ontario or Brisbane - Ontario, Sydney Kingsford Smith - Ontario is the most popular route from Australia to Ontario.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Australia to Ontario (average of $809). Flying from Australia to Ontario in December is currently the most expensive (average of $932). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Australia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Los Angeles flights
Melbourne to Los Angeles flights
Brisbane to Los Angeles flights
Sydney to San Francisco flights
Perth to Los Angeles flights
Melbourne to San Francisco flights
Sydney to Ontario flights
Sydney to Las Vegas flights
Perth to San Francisco flights
Brisbane to San Francisco flights
Brisbane to Ontario flights
Perth to Ontario flights
Sydney to San Jose flights
Sydney to Long Beach flights
Melbourne to San Diego flights
Sydney to Santa Ana flights
Melbourne to Las Vegas flights
Brisbane to Las Vegas flights
Adelaide to Los Angeles flights
Sydney to Sacramento flights
Avalon to San Francisco flights
Melbourne to Santa Ana flights
Adelaide to San Francisco flights
Sydney to San Diego flights
Sydney to Oakland flights
Cairns to Los Angeles flights
Perth to Las Vegas flights
Sydney to Burbank flights
Coolangatta to Los Angeles flights
Sydney to Palm Springs flights
Melbourne to Burbank flights
Brisbane to San Diego flights
Canberra to Las Vegas flights
Melbourne to San Jose flights
Canberra to Los Angeles flights
Melbourne to Oakland flights
Melbourne to Sacramento flights
Townsville to Los Angeles flights
Canberra to San Francisco flights
Sydney to Reno flights
Brisbane to San Jose flights
Perth to Sacramento flights
Melbourne to Santa Rosa flights
Brisbane to Sacramento flights

Top airline flying from Australia to Ontario

Discover the top airline that operate flights from Australia to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 27 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,007Average$1,687FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to Ontario?

Cheapflights makes it easy to find Australia to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Australia to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Australia.

Can Cheapflights find flights from Australia to Ontario with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Australia to Ontario, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Australia to Ontario become cheaper?

Not ready to book yet? You can track prices for flights from Australia to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.