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Cheap flights from Australia to Ontario from $652

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 24/4. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
23 Apr — 30 Apr1
1 adult

Cheap flight deals from Australia to Ontario

Keep the following information in mind while searching for Australia to Ontario flight deals. Data was last updated 18 April 2025.

Round-trip from

$1,501

One-way from

$652

Popular in

December

Cheapest in

May

Average price

$1,404
United Airlines
  • United Airlines
  • 12/5-2/6
  • 2 total stops
  • 51h 33m total
  • Australia to Ontario
Search Deals
24/4
  • 24/4
  • 2 total stops
  • 45h 29m total
  • Australia to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($330 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($91 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Australia to Ontario

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 18 April 2025.

Mon 8/1211:40BNE - ONT
1 stop30h 30mUnited Airlines
Sun 11/106:00ONT - BNE
1 stop31h 30mUnited Airlines
Deal found 17/4$1,438
Mon 12/510:20SYD - ONT
1 stop27h 14mUnited Airlines
Mon 2/613:36ONT - SYD
1 stop24h 19mUnited Airlines
Deal found 17/4$1,501
Thu 8/522:10SYD - ONT
1 stop36h 50mChina Airlines
Tue 20/501:40ONT - SYD
1 stop40h 05mChina Airlines
Deal found 16/4$1,705
Tue 28/1023:10BNE - ONT
1 stop35h 40mChina Airlines
Tue 11/1122:45ONT - BNE
1 stop42h 00mChina Airlines
Deal found 17/4$1,771
Wed 8/1021:50MEL - ONT
1 stop38h 10mChina Airlines
Tue 21/1000:10ONT - MEL
1 stop41h 30mChina Airlines
Deal found 17/4$1,772
Wed 4/622:10SYD - ONT
1 stop36h 50mMultiple Airlines
Wed 11/609:50ONT - SYD
1 stop35h 50mMultiple Airlines
Deal found 17/4$1,785
Sun 14/921:40SYD - ONT
2 stops30h 05mHawaiian Airlines
Sat 27/908:35ONT - SYD
1 stop18h 10mHawaiian Airlines
Deal found 16/4$1,892
Tue 17/610:55MEL - ONT
1 stop18h 19mUnited Airlines
Tue 24/613:33ONT - MEL
2 stops25h 42mUnited Airlines
Deal found 17/4$1,918
Mon 29/918:15BNE - ONT
2 stops40h 45mMultiple Airlines
Sat 18/1000:10ONT - BNE
1 stop41h 25mMultiple Airlines
Deal found 17/4$2,013
Fri 9/510:20SYD - ONT
2 stops21h 49mLufthansa
Thu 22/506:00ONT - SYD
1 stop31h 55mLufthansa
Deal found 17/4$2,016
Fri 18/418:00MEL - ONT
2 stops20h 50mHawaiian Airlines
Tue 22/409:45ONT - MEL
2 stops53h 50mHawaiian Airlines
Deal found 17/4$2,171
Fri 18/418:05BNE - ONT
2 stops20h 45mHawaiian Airlines
Tue 22/409:45ONT - BNE
2 stops53h 45mHawaiian Airlines
Deal found 17/4$2,173

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 18 April 2025.
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

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 12/5

10:20-20:34

1 stop27h 14m

Ontario

Mon 2/6

13:36-06:55

1 stop24h 19m

$1,501

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 8/5

22:10-18:00

1 stop36h 50m

Ontario

Tue 20/5

01:40-10:45

1 stop40h 05m

$1,705

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Wed 8/10

21:50-18:00

1 stop38h 10m

Ontario

Tue 21/10

00:10-11:40

1 stop41h 30m

$1,772

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 4/6

22:10-18:00

1 stop36h 50m

Ontario

Wed 11/6

09:50-14:40

1 stop35h 50m

$1,785

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Sat 17/5

22:50-18:00

1 stop36h 10m

Ontario

Tue 20/5

00:10-10:35

1 stop41h 25m

$1,834

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 14/9

21:40-10:45

2 stops30h 05m

Ontario

Sat 27/9

08:35-19:45

1 stop18h 10m

$1,892

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Tue 17/6

10:55-12:14

1 stop18h 19m

Ontario

Tue 24/6

13:33-08:15

2 stops25h 42m

$1,918

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Mon 29/9

18:15-18:00

2 stops40h 45m

Ontario

Sat 18/10

00:10-10:35

1 stop41h 25m

$2,013

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 9/5

10:20-15:09

2 stops21h 49m

Ontario

Thu 22/5

06:00-06:55

1 stop31h 55m

$2,016

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Mon 29/9

10:30-12:13

1 stop18h 43m

Ontario

Sun 19/10

13:15-06:30

2 stops24h 15m

$2,165

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 45 results
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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 time of day to fly from AU to ONT?

Find hourly flight availability from Australia to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 April 2025.

When flying from Australia to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

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 18 April 2025.
Get a feel of what it's like to fly with Japan Airlines, China Airlines and Hawaiian Airlines from Australia to Ontario by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Boarding

8.4

Comfort

8.2

Overall

8.3

Food

7.7

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very Good
1,447 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Boarding

8.4

Comfort

8.2

Overall

8.3

Food

7.7

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
China Airlines
8.2
Very Good
729 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Boarding

8.4

Comfort

8.2

Overall

8.3

Food

7.7

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Hawaiian Airlines
7.9
Good
2,385 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Boarding

8.4

Comfort

8.2

Overall

8.3

Food

7.7

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Qatar Airways
7.4
Good
3,554 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Boarding

8.4

Comfort

8.2

Overall

8.3

Food

7.7

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
United Airlines
7.4
Good
8,667 reviews
Japan Airlines
8.3
Very Good
1,447 reviews
Check prices

Boarding

8.4

Comfort

8.2

Overall

8.3

Food

7.7

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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.

  • What are the cheapest airlines to fly from Australia to Ontario one-way?

    $1,121 is the cheapest one-way deal found within the past few days, from China Airlines. You may also be able to find cheap deals on United Airlines and Hawaiian Airlines, with prices starting from $1,201 and $1,301, respectively.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Australia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 18 April 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,094Average$1,864FlexibilityNo 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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