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Cheap flights from Australia to Ontario from $881

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
16 Jul — 23 Jul1
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 11 July 2025.

Round-trip from

$1,318

One-way from

$881

Popular in

December

Cheapest in

May

Average price

$1,389
United Airlines
  • United Airlines
  • 1/8-14/8
  • 2 total stops
  • 38h 10m total
  • Australia to Ontario
Search Deals
United Airlines
  • United Airlines
  • 1/8
  • 2 total stops
  • 24h 05m total
  • Australia to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($309 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($78 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 11 July 2025.

Fri 1/810:20SYD - ONT
1 stop18h 54mUnited Airlines
Thu 14/818:39ONT - SYD
1 stop19h 16mUnited Airlines
Deal found 9/7$1,318
Mon 10/1111:40BNE - ONT
1 stop18h 57mUnited Airlines
Sat 22/1113:40ONT - BNE
1 stop23h 50mUnited Airlines
Deal found 9/7$1,400
Sun 24/809:25SYD - ONT
2 stops23h 43mDelta
Sun 31/806:05ONT - SYD
2 stops31h 30mDelta
Deal found 9/7$1,482
Fri 1/810:55MEL - ONT
1 stop18h 19mUnited Airlines
Thu 14/818:39ONT - MEL
1 stop20h 36mUnited Airlines
Deal found 9/7$1,496
Tue 11/1121:40SYD - ONT
1 stop38h 34mAlaska Airlines
Wed 19/1109:45ONT - SYD
1 stop39h 00mAlaska Airlines
Deal found 9/7$1,668
Fri 7/1123:20MEL - ONT
1 stop36h 30mChina Airlines
Sat 15/1122:45ONT - MEL
1 stop42h 20mChina Airlines
Deal found 10/7$1,734
Mon 20/1022:10SYD - ONT
1 stop37h 50mChina Airlines
Sat 1/1123:45ONT - SYD
1 stop42h 25mChina Airlines
Deal found 9/7$1,760
Wed 20/806:05ADL - ONT
2 stops22h 38mUnited Airlines
Tue 23/913:42ONT - ADL
2 stops28h 53mUnited Airlines
Deal found 9/7$1,761
Sun 7/922:50BNE - ONT
1 stop36h 50mChina Airlines
Wed 10/900:45ONT - BNE
1 stop40h 50mChina Airlines
Deal found 9/7$1,830
Sun 13/707:05OOL - ONT
2 stops27h 38mUnited Airlines
Thu 13/1106:00ONT - OOL
2 stops38h 20mUnited Airlines
Deal found 9/7$1,853
Mon 1/923:45PER - ONT
2 stops32h 52mUnited Airlines
Mon 15/913:42ONT - PER
2 stops33h 58mUnited Airlines
Deal found 9/7$1,862
Tue 14/1020:30PER - ONT
3 stops35h 35mMultiple Airlines
Tue 4/1106:45ONT - PER
3 stops33h 00mMultiple Airlines
Deal found 10/7$1,872

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 July 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 1/8

10:20-12:14

1 stop18h 54m

Ontario

Thu 14/8

18:39-06:55

1 stop19h 16m

$1,318

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Mon 10/11

11:40-12:37

1 stop18h 57m

Ontario

Sat 22/11

13:40-07:30

1 stop23h 50m

$1,400

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 24/8

09:25-16:08

2 stops23h 43m

Ontario

Sun 31/8

06:05-06:35

2 stops31h 30m

$1,482

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 1/8

10:55-12:14

1 stop18h 19m

Ontario

Thu 14/8

18:39-08:15

1 stop20h 36m

$1,496

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 11/11

21:40-17:14

1 stop38h 34m

Ontario

Wed 19/11

09:45-19:45

1 stop39h 00m

$1,668

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 7/11

23:20-16:50

1 stop36h 30m

Ontario

Sat 15/11

22:45-12:05

1 stop42h 20m

$1,734

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 20/10

22:10-18:00

1 stop37h 50m

Ontario

Sat 1/11

23:45-12:10

1 stop42h 25m

$1,760

AdelaideOntario

ADL - ONT

ADLONT

Adelaide

Wed 20/8

06:05-12:13

2 stops22h 38m

Ontario

Tue 23/9

13:42-11:05

2 stops28h 53m

$1,761

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Sun 7/9

22:50-18:40

1 stop36h 50m

Ontario

Wed 10/9

00:45-10:35

1 stop40h 50m

$1,830

PerthOntario

PER - ONT

PERONT

Perth

Mon 1/9

23:45-17:37

2 stops32h 52m

Ontario

Mon 15/9

13:42-14:40

2 stops33h 58m

$1,862

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 40 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 11 July 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.

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 July 2025.
Check out reviews from past customers who have flown with Japan Airlines, China Airlines, andAlaska 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.
Japan Airlines
8.3
Very Good
1,512 reviews
Check prices

Food

7.7

Comfort

8.2

Overall

8.3

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 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
1,512 reviews
Japan Airlines
8.3
Very Good
1,512 reviews
Check prices

Food

7.7

Comfort

8.2

Overall

8.3

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 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
1,512 reviews
Check prices

Food

7.7

Comfort

8.2

Overall

8.3

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 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
1,512 reviews
Check prices

Food

7.7

Comfort

8.2

Overall

8.3

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 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
7,951 reviews
Japan Airlines
8.3
Very Good
1,512 reviews
Check prices

Food

7.7

Comfort

8.2

Overall

8.3

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 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
2,565 reviews
Japan Airlines
8.3
Very Good
1,512 reviews
Check prices

Food

7.7

Comfort

8.2

Overall

8.3

Boarding

8.4

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 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?

    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?

    $881 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on China Airlines and Japan Airlines, with prices starting from $1,121 and $1,284, respectively.

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

    While some choose either Sydney Kingsford Smith - Ontario or Brisbane - Ontario, Melbourne - 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

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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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,062Average$1,749FlexibilityNo 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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