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$412+ Cheap flights from Ontario (ONT) to Australia

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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SYD
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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Cheap flight deals from Ontario to Australia

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Australia (AU0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 17, 2025.

Round-trip from

$822
(United Airlines)

One-way from

$412
(Delta)
From Ontario to Australia
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One-way flight from Ontario to Australia
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Find flight deals from Ontario to Australia

Cheapest flights from Ontario to Australia
Explore the most affordable flight options available from Ontario to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.

This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/153:30 pmONT - BNE
1 stop22h 00mUnited Airlines
Sat 2/2211:40 amBNE - ONT
1 stop20h 50mUnited Airlines
Deal found 1/16$822
This Hawaiian Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/119:50 amONT - SYD
1 stop38h 55mHawaiian Airlines
Thu 11/209:40 pmSYD - ONT
1 stop19h 15mHawaiian Airlines
Deal found 1/15$862
This Kiwi.com deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/266:58 pmONT - MEL
2 stops46h 47mMultiple Airlines
Sun 3/94:50 pmMEL - ONT
1 stop22h 05mMultiple Airlines
Deal found 1/16$954
This Kiwi.com deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/56:58 pmONT - SYD
2 stops47h 02mMultiple Airlines
Mon 3/315:20 pmSYD - ONT
1 stop21h 35mMultiple Airlines
Deal found 1/16$958
This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/166:41 pmONT - SYD
1 stop19h 14mUnited Airlines
Wed 7/910:20 amSYD - ONT
1 stop16h 39mUnited Airlines
Deal found 1/16$1,020
This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/136:00 amONT - MEL
1 stop33h 00mUnited Airlines
Wed 2/261:00 pmMEL - ONT
1 stop20h 29mUnited Airlines
Deal found 1/16$1,053
This Delta deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:00 amONT - SYD
2 stops31h 35mDelta
Mon 5/129:25 amSYD - ONT
2 stops31h 20mDelta
Deal found 1/16$1,075
This Kissandfly.com deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/136:00 amONT - MEL
1 stop33h 00mLufthansa
Wed 2/261:00 pmMEL - ONT
1 stop20h 29mLufthansa
Deal found 1/16$1,076
This United Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/13:30 pmONT - OOL
2 stops27h 50mUnited Airlines
Sat 3/86:00 amOOL - ONT
3 stops34h 45mUnited Airlines
Deal found 1/15$1,290
This oojo deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/26:00 amONT - PER
2 stops44h 45mQatar Airways
Sun 3/910:45 pmPER - ONT
2 stops39h 39mQatar Airways
Deal found 1/16$1,409
This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/131:20 pmONT - ADL
2 stops29h 05mUnited Airlines
Sun 5/46:05 amADL - ONT
2 stops22h 40mUnited Airlines
Deal found 1/16$1,417
This Alaska Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/67:01 pmONT - SYD
3 stops29h 44mAlaska Airlines
Thu 2/209:40 pmSYD - ONT
2 stops32h 22mAlaska Airlines
Deal found 1/16$1,461

Find flights from Ontario to Australia within your budget

Customize your flight search to find flights from Ontario to Australia 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 2,558,603 searches. Data last updated January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioBrisbane

ONT - BNE

ONTBNE

Ontario

Sat 2/15

3:30 pm-7:30 am

1 stop22h 00m

Brisbane

Sat 2/22

11:40 am-2:30 pm

1 stop20h 50m

$822

OntarioMelbourne

ONT - MEL

ONTMEL

Ontario

Wed 2/26

6:58 pm-12:45 pm

2 stops46h 47m

Melbourne

Sun 3/9

4:50 pm-7:55 pm

1 stop22h 05m

$954

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 3/5

6:58 pm-1:00 pm

2 stops47h 02m

Sydney Kingsford Smith

Mon 3/31

5:20 pm-8:55 pm

1 stop21h 35m

$958

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 3/5

9:45 am-7:45 pm

1 stop39h 00m

Sydney Kingsford Smith

Thu 3/13

9:40 pm-8:55 pm

1 stop17h 15m

$967

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 6/16

6:41 pm-6:55 am

1 stop19h 14m

Sydney Kingsford Smith

Tue 7/1

10:20 am-9:59 am

1 stop16h 39m

$1,020

OntarioMelbourne

ONT - MEL

ONTMEL

Ontario

Thu 2/13

6:00 am-10:00 am

1 stop33h 00m

Melbourne

Wed 2/26

1:00 pm-2:29 pm

1 stop20h 29m

$1,053

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 5/8

6:00 am-6:35 am

2 stops31h 35m

Sydney Kingsford Smith

Mon 5/12

9:25 am-11:45 pm

2 stops31h 20m

$1,075

OntarioMelbourne

ONT - MEL

ONTMEL

Ontario

Thu 2/13

6:00 am-10:00 am

1 stop33h 00m

Melbourne

Wed 2/26

1:00 pm-2:29 pm

1 stop20h 29m

$1,076

OntarioCoolangatta

ONT - OOL

ONTOOL

Ontario

Sat 3/1

3:30 pm-1:20 pm

2 stops27h 50m

Coolangatta Gold Coast

Sat 3/8

6:00 am-10:45 pm

3 stops34h 45m

$1,290

OntarioPerth

ONT - PER

ONTPER

Ontario

Sun 3/2

6:00 am-6:45 pm

2 stops44h 45m

Perth

Sun 3/9

10:45 pm-11:24 pm

2 stops39h 39m

$1,409

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 58 results
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Best time to book a flight from Ontario to Australia

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

Travel insights for flights from Ontario to Australia

Get recent, data-driven insights about flights from Ontario to Australia including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from Ontario to Australia (average of $1,051). Flying from Ontario to Australia in December is currently the most expensive (average of $1,643). 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.

What is the cheapest time of day to fly from ONT to AU?

Find hourly flight availability from Ontario to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Australia as you normally would.

Rainfall in Australia by month

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

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

Temperature in Australia by month

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

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated January 17, 2025.
Read through reviews of airlines operating flights from Ontario to Australia, such as United Airlines, China Airlines and Hawaiian Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,448 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Comfort

8.2

Boarding

8.4

Food

7.7

Reviews

1 / 10

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority

Japan Airlines
8.3
Very good
1,448 reviews
Japan Airlines
8.3
Very good
1,448 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Comfort

8.2

Boarding

8.4

Food

7.7

Reviews

1 / 10

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority

Asiana Airlines
8.3
Very good
466 reviews
Japan Airlines
8.3
Very good
1,448 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Comfort

8.2

Boarding

8.4

Food

7.7

Reviews

1 / 10

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority

China Airlines
8.2
Very good
737 reviews
Japan Airlines
8.3
Very good
1,448 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Comfort

8.2

Boarding

8.4

Food

7.7

Reviews

1 / 10

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority

Delta
8.0
Very good
8,511 reviews
Japan Airlines
8.3
Very good
1,448 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Comfort

8.2

Boarding

8.4

Food

7.7

Reviews

1 / 10

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority

Alaska Airlines
8.0
Very good
9,681 reviews
Japan Airlines
8.3
Very good
1,448 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Comfort

8.2

Boarding

8.4

Food

7.7

Reviews

1 / 10

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority

Related info for your journey

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

    If you book a flight to Australia from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $412. United Airlines flights start at $423 while deals on Lufthansa start at $487 one-way.

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

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

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Ontario to Australia (average of $1,051). Flying from Ontario to Australia in December is currently the most expensive (average of $1,643). 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

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ontario to Australia

Discover the top 2 airlines that operate flights from Ontario to Australia. 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 2,558,603 searches. Data last updated January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$493Average$855FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$1,042Average$1,087FlexibilityNo cancel feeOn-time74%
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