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Ontario

$582+ Cheap flights from Australia to Ontario (ONT)

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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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 July 3, 2025.

Round-trip from

$846
(Alaska Airlines)

One-way from

$582
(United Airlines)

Popular in

December

Cheapest in

May

Average price

$912
From Australia to Ontario
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One-way flight from Australia to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($133 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 10/319:40 pmSYD - ONT
1 stop37h 34mAlaska Airlines
Fri 11/149:45 amONT - SYD
1 stop39h 00mAlaska Airlines
Deal found 6/30$846
This Tripair deal was found by Cheapflights users on 7/1. 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 Tripair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/110:20 amSYD - ONT
1 stop29h 32mUnited Airlines
Thu 8/141:19 pmONT - SYD
1 stop24h 36mUnited Airlines
Deal found 7/1$858
This United Airlines deal was found by Cheapflights users on 7/1. 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 11/211:40 amBNE - ONT
2 stops26h 37mUnited Airlines
Sun 11/306:38 pmONT - BNE
1 stop18h 52mUnited Airlines
Deal found 7/1$922
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/1010:55 amMEL - ONT
1 stop18h 19mUnited Airlines
Sun 8/36:39 pmONT - MEL
1 stop20h 36mUnited Airlines
Deal found 7/1$986
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Fri 8/154:20 pmSYD - ONT
1 stop22h 07mMultiple Airlines
Fri 8/227:22 pmONT - SYD
2 stops50h 18mMultiple Airlines
Deal found 7/1$1,105
This Gotogate deal was found by Cheapflights users on 7/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/229:50 pmMEL - ONT
1 stop37h 50mChina Airlines
Sat 8/3012:45 amONT - MEL
1 stop40h 55mChina Airlines
Deal found 7/1$1,142
This Gotogate deal was found by Cheapflights users on 7/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1610:10 pmSYD - ONT
1 stop37h 40mChina Airlines
Sat 11/2210:45 pmONT - SYD
1 stop42h 25mChina Airlines
Deal found 7/1$1,146
This Aunt Betty deal was found by Cheapflights users on 7/1. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1210:50 pmBNE - ONT
1 stop36h 50mChina Airlines
Thu 8/2112:45 amONT - BNE
1 stop40h 50mChina Airlines
Deal found 7/1$1,154
This Delta deal was found by Cheapflights users on 7/1. 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.
Fri 8/159:25 amSYD - ONT
2 stops31h 15mDelta
Fri 8/221:15 pmONT - SYD
2 stops24h 20mDelta
Deal found 7/1$1,214
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 10/156:00 amOOL - ONT
2 stops33h 42mUnited Airlines
Thu 11/136:00 amONT - OOL
3 stops36h 40mUnited Airlines
Deal found 7/2$1,230
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/1711:45 pmPER - ONT
2 stops27h 29mUnited Airlines
Tue 9/161:42 pmONT - PER
2 stops33h 58mUnited Airlines
Deal found 7/2$1,327
This BYOjet deal was found by Cheapflights users on 7/3. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1012:10 amPER - ONT
3 stops32h 54mJapan Airlines
Wed 8/206:00 amONT - PER
3 stops34h 45mJapan Airlines
Deal found 7/3$1,330

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated July 3, 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

Fri 10/31

9:40 pm-5:14 pm

1 stop37h 34m

Ontario

Fri 11/14

9:45 am-7:45 pm

1 stop39h 00m

$846

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 8/1

10:20 am-10:52 pm

1 stop29h 32m

Ontario

Thu 8/14

1:19 pm-6:55 am

1 stop24h 36m

$858

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Sun 11/2

11:40 am-9:17 pm

2 stops26h 37m

Ontario

Sun 11/30

6:38 pm-7:30 am

1 stop18h 52m

$922

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Mon 9/8

10:55 am-5:37 pm

1 stop23h 42m

Ontario

Thu 9/25

6:36 pm-8:15 am

1 stop20h 39m

$986

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 8/15

4:20 pm-9:27 pm

1 stop22h 07m

Ontario

Fri 8/22

7:22 pm-2:40 pm

2 stops50h 18m

$1,105

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Tue 7/22

9:50 pm-6:40 pm

1 stop37h 50m

Ontario

Sat 8/30

12:45 am-10:40 am

1 stop40h 55m

$1,142

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 11/16

10:10 pm-4:50 pm

1 stop37h 40m

Ontario

Sat 11/22

10:45 pm-12:10 pm

1 stop42h 25m

$1,146

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Tue 8/12

10:50 pm-6:40 pm

1 stop36h 50m

Ontario

Thu 8/21

12:45 am-10:35 am

1 stop40h 50m

$1,154

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 8/15

9:25 am-11:40 pm

2 stops31h 15m

Ontario

Fri 8/22

1:15 pm-6:35 am

2 stops24h 20m

$1,214

CoolangattaOntario

OOL - ONT

OOLONT

Coolangatta Gold Coast

Wed 10/15

6:00 am-10:42 pm

2 stops33h 42m

Ontario

Thu 11/13

6:00 am-12:40 pm

3 stops36h 40m

$1,230

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 34 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 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.

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, August is the cheapest month in which you can book a flight from Australia to Ontario (average of $246). Flying from Australia to Ontario in March is currently the most expensive (average of $328). 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 July 3, 2025.
See what other customers who have flown with Japan Airlines, China Airlines, and Alaska Airlines from Australia to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,505 reviews

Overall

8.3

Food

7.7

Comfort

8.2

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Japan Airlines
8.3
Very good
1,505 reviews
Japan Airlines
8.3
Very good
1,505 reviews

Overall

8.3

Food

7.7

Comfort

8.2

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
China Airlines
8.3
Very good
744 reviews
Japan Airlines
8.3
Very good
1,505 reviews

Overall

8.3

Food

7.7

Comfort

8.2

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Alaska Airlines
8.0
Very good
10,000 reviews
Japan Airlines
8.3
Very good
1,505 reviews

Overall

8.3

Food

7.7

Comfort

8.2

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Delta
8.0
Very good
7,982 reviews
Japan Airlines
8.3
Very good
1,505 reviews

Overall

8.3

Food

7.7

Comfort

8.2

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Hawaiian Airlines
7.8
Good
2,545 reviews
Japan Airlines
8.3
Very good
1,505 reviews

Overall

8.3

Food

7.7

Comfort

8.2

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.

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?

    Ontario (ONT) is the airport you will fly into if you book a flight from Australia to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

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

    One-way options have recently been found by users for as low as $582 on United Airlines. Other airlines that offer cheap prices include Alaska Airlines from $713 and China Airlines from $735 one-way.

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

    The most popular flight routes from Australia to Ontario are Sydney Kingsford Smith - Ontario, Melbourne - Ontario and Brisbane - 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 vacation 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, August is the cheapest month in which you can book a flight from Australia to Ontario (average of $246). Flying from Australia to Ontario in March is currently the most expensive (average of $328). 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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