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Cheap flights from Australia to Ontario from $693

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
10 Apr — 17 Apr1
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 11 March 2026.

Thu 30/420:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Wed 13/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 9/3$1,241
Thu 13/820:45
SYD
-
ONT
1 stop18h 02m
Multiple Airlines
Sat 22/808:00
ONT
-
SYD
1 stop17h 50m
Multiple Airlines
Deal found 6/3$1,258
Fri 14/820:45
SYD
-
ONT
1 stop18h 02m
Multiple Airlines
Thu 20/808:00
ONT
-
SYD
1 stop17h 50m
Multiple Airlines
Deal found 9/3$1,259
Thu 12/1121:40
SYD
-
ONT
1 stop18h 48m
Multiple Airlines
Sun 15/1109:00
ONT
-
SYD
1 stop39h 45m
Multiple Airlines
Deal found 11/3$1,269
Mon 26/1011:00
MEL
-
ONT
2 stops30h 48m
Delta
Mon 9/1113:00
ONT
-
MEL
2 stops25h 50m
Delta
Deal found 10/3$1,270
Thu 7/520:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Thu 14/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 11/3$1,277
Thu 6/820:45
SYD
-
ONT
1 stop18h 02m
Multiple Airlines
Wed 26/808:00
ONT
-
SYD
1 stop17h 50m
Multiple Airlines
Deal found 9/3$1,287
Fri 24/410:00
MEL
-
ONT
2 stops30h 44m
Delta
Fri 1/506:00
ONT
-
MEL
2 stops32h 50m
Delta
Deal found 10/3$1,290
Sat 5/1206:00
OOL
-
ONT
2 stops33h 28m
Multiple Airlines
Sat 2/109:00
ONT
-
OOL
2 stops54h 40m
Multiple Airlines
Deal found 9/3$1,464
Sat 29/809:05
PER
-
ONT
2 stops27h 23m
Multiple Airlines
Thu 3/908:00
ONT
-
PER
2 stops44h 10m
Multiple Airlines
Deal found 10/3$1,478
Thu 2/710:55
MEL
-
ONT
1 stop18h 17m
Multiple Airlines
Sun 19/718:39
ONT
-
MEL
1 stop20h 36m
Multiple Airlines
Deal found 7/3$1,537
Tue 25/816:00
BNE
-
ONT
2 stops22h 28m
Multiple Airlines
Mon 31/808:00
ONT
-
BNE
2 stops33h 55m
Multiple Airlines
Deal found 10/3$1,565

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 11 March 2026.

Round-trip from

$1,241

One-way from

$693

Popular in

December

Cheapest in

August

Average price

$1,112
30/4-13/5
  • 30/4-13/5
  • 2 total stops
  • 57h 35m total
  • Australia to Ontario
Search Deals
United Airlines
  • United Airlines
  • 19/3
  • 1 total stop
  • 29h 17m total
  • Australia to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($120 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 11 March 2026.
Use the filters below to find and compare flights from Australia to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 28/8

13:30-21:28

2 stops24h 58m

Ontario

Mon 21/9

08:00-10:20

2 stops33h 20m

$1,615

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 24/4

20:45-10:08

2 stops30h 23m

Ontario

Fri 1/5

15:26-18:50

2 stops34h 24m

$1,661

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 30/4

22:10-18:00

1 stop36h 50m

Ontario

Mon 4/5

00:10-10:45

1 stop41h 35m

$1,784

PerthOntario

PER - ONT

PERONT

Perth

Fri 1/5

06:05-21:10

2 stops30h 05m

Ontario

Wed 13/5

09:40-19:10

2 stops66h 30m

$1,811

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 30/4

22:10-18:00

1 stop36h 50m

Ontario

Tue 12/5

00:10-10:45

1 stop41h 35m

$1,861

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 14/5

20:45-22:17

1 stop18h 32m

Ontario

Sat 30/5

17:57-18:50

2 stops55h 53m

$1,874

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 4/9

21:50-18:40

1 stop37h 50m

Ontario

Thu 1/10

00:10-10:40

1 stop41h 30m

$1,920

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Sun 6/9

21:50-18:40

1 stop37h 50m

Ontario

Tue 6/10

00:10-11:40

1 stop41h 30m

$1,921

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Wed 17/6

10:55-17:28

2 stops23h 33m

Ontario

Sat 5/9

13:18-08:15

2 stops49h 57m

$1,955

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Mon 7/9

10:55-12:12

1 stop18h 17m

Ontario

Sun 4/10

18:53-09:15

1 stop20h 22m

$1,955

Flights are sorted by cheapest return flights first.

Deals found on 6/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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 $756). Flying from Australia to Ontario in September is currently the most expensive (average of $876). 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 11 March 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
9,413 reviews
Check prices

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
9,413 reviews
United Airlines
7.4
Good
9,413 reviews
Check prices

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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?

    China Airlines and United Airlines can get you from Australia to Ontario in just under 23h 33m. Your travel time can differ by up to 13h 17m. The distance between Australia and Ontario is about 12820 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 $756). Flying from Australia to Ontario in September is currently the most expensive (average of $876). 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.

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 11 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,179Average$1,490FlexibilityNo 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.

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