How long is the flight from Australia to Ontario?

United Airlines can get you from Australia to Ontario in just under 22h 43m. Your travel time can differ by up to . The distance between Australia and Ontario is about 12125 km.

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.

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).

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.

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

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.

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.

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.

$675+ Cheap Flights from Australia to Ontario

Cheap flight deals from Australia to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 8 October 2026.

Wed 18/1110:40 -

2 stops24h 44m

Wed 25/1106:00 -

2 stops31h 30m

Deal found 4/10$1,101

Wed 4/1110:40 -

2 stops30h 31m

Wed 11/1113:15 -

2 stops24h 15m

Deal found 7/10$1,104

Thu 8/1011:20 -

1 stop18h 58m

Wed 21/1016:03 -

1 stop21h 52m

Deal found 4/10$1,167

Mon 5/1011:20 -

1 stop18h 58m

Sun 18/1016:03 -

1 stop21h 52m

Deal found 3/10$1,173

Thu 8/1011:20 -

1 stop18h 58m

Wed 21/1016:03 -

1 stop21h 52m

Deal found 6/10$1,177

Thu 29/1011:50 -

2 stops27h 01m

Mon 2/1116:17 -

1 stop22h 03m

Deal found 7/10$1,181

Tue 3/1111:50 -

1 stop25h 11m

Wed 18/1105:00 -

2 stops31h 00m

Deal found 7/10$1,184

Fri 30/1010:20 -

1 stop19h 09m

Fri 13/1118:37 -

1 stop18h 53m

Deal found 5/10$1,283

Sun 1/1111:20 -

1 stop19h 09m

Thu 12/1118:37 -

1 stop18h 53m

Deal found 4/10$1,291

Wed 18/1110:10 -

2 stops32h 39m

Wed 25/1106:00 -

2 stops55h 00m

Deal found 3/10$1,292

Tue 13/1010:30 -

2 stops27h 28m

Tue 20/1005:00 -

2 stops56h 30m

Deal found 6/10$1,292

Wed 4/1111:20 -

1 stop19h 09m

Fri 13/1113:32 -

2 stops23h 58m

Deal found 7/10$1,295

Best flights from Australia to Ontario
Discover carefully curated flight deals from Australia to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Tue 3/1111:50 -

1 stop22h 43m

Wed 18/1106:00 -

1 stop30h 00m

Deal found 8/10$1,181

Sun 1/1110:40 -

2 stops30h 31m

Sun 8/1106:00 -

2 stops31h 30m

Deal found 4/10$1,286

Fri 30/1009:45 -

2 stops26h 43m

Fri 13/1112:01 -

2 stops26h 44m

Deal found 3/10$1,578

Mon 2/1123:10 -

1 stop35h 55m

Mon 9/1122:50 -

1 stop41h 55m

Deal found 5/10$2,090

Thu 22/1023:45 -

2 stops41h 57m

Tue 27/1011:13 -

2 stops42h 07m

Deal found 3/10$2,267

Mon 2/1111:50 -

1 stop19h 39m

Mon 9/1118:37 -

1 stop19h 43m

Deal found 8/10$1,181

Mon 5/410:20 -

1 stop19h 00m

Mon 19/418:53 -

1 stop19h 02m

Deal found 5/10$1,181

Tue 3/1111:50 -

1 stop25h 11m

Tue 17/1116:17 -

1 stop22h 03m

Deal found 8/10$1,181

Tue 3/1111:50 -

1 stop19h 39m

Mon 16/1118:37 -

1 stop19h 43m

Deal found 7/10$1,184

Sun 6/1221:40 -

1 stop18h 45m

Sun 24/107:00 -

1 stop17h 45m

Deal found 7/10$1,813

Sat 26/1211:50 -

1 stop22h 29m

Mon 11/105:00 -

2 stops33h 20m

Deal found 6/10$1,250

Mon 26/1011:50 -

1 stop18h 39m

Fri 30/1016:17 -

1 stop23h 03m

Deal found 5/10$1,250

Mon 2/1111:50 -

1 stop19h 39m

Fri 6/1116:17 -

1 stop22h 03m

Deal found 8/10$1,252

Fri 4/1214:30 -

2 stops25h 25m

Thu 10/1208:03 -

2 stops57h 22m

Deal found 4/10$2,152

Fri 30/1010:20 -

1 stop19h 09m

Fri 13/1118:37 -

1 stop18h 53m

Deal found 3/10$1,289

Tue 8/1218:00 -

2 stops22h 25m

Sat 23/107:00 -

2 stops29h 35m

Deal found 7/10$2,221

Mon 1/311:20 -

1 stop16h 27m

Wed 10/313:00 -

2 stops24h 30m

Deal found 3/10$1,291

Wed 25/1111:20 -

1 stop19h 09m

Wed 9/1218:40 -

1 stop18h 50m

Deal found 5/10$1,292

Sat 5/1217:05 -

2 stops23h 20m

Fri 22/107:00 -

2 stops29h 35m

Deal found 3/10$2,340

Mon 2/1111:20 -

2 stops27h 31m

Sun 27/1206:00 -

1 stop31h 30m

Deal found 8/10$1,293

Mon 25/111:20 -

1 stop16h 37m

Wed 10/214:00 -

1 stop23h 30m

Deal found 4/10$1,293

Tue 20/1010:30 -

1 stop16h 53m

Tue 27/1006:59 -

2 stops54h 31m

Deal found 4/10$1,293

Mon 26/1011:45 -

1 stop18h 44m

Sun 8/1118:37 -

1 stop20h 53m

Deal found 3/10$1,305

Thu 24/1212:45 -

2 stops51h 15m

Fri 15/113:42 -

2 stops49h 48m

Deal found 6/10$1,381

Thu 29/1006:05 -

2 stops23h 24m

Wed 23/1218:27 -

1 stop19h 03m

Deal found 6/10$1,404

Sat 24/1006:55 -

2 stops25h 27m

Sat 31/1013:29 -

2 stops24h 01m

Deal found 8/10$1,405

Tue 3/1107:35 -

2 stops22h 54m

Thu 12/1116:17 -

1 stop21h 13m

Deal found 7/10$1,410

Fri 23/1011:55 -

1 stop18h 23m

Sat 31/1013:35 -

1 stop25h 55m

Deal found 6/10$1,451

Sat 24/1011:55 -

1 stop21h 27m

Sat 31/1013:29 -

2 stops26h 01m

Deal found 8/10$1,453

Wed 9/1212:45 -

2 stops51h 26m

Wed 20/113:42 -

2 stops49h 48m

Deal found 7/10$1,466

Find flight deals from Australia to Ontario

Round-trip from	$1,100
One-way from	$675
Popular in	December
Cheapest in	August
Average price	$1,138

Delta
17/11-24/11
4 total stops
63h 39m total
Australia to Ontario

Search Deals

Lufthansa
15/3-31/12
1 total stop
18h 30m total
Australia to Ontario

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($136 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($44 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 17/11

09:15-12:33

2 stops46h 18m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Thu 29/10

09:10-20:51

2 stops29h 41m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 19/1

13:20-20:01

1 stop25h 41m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 24/11

11:50-15:33

1 stop22h 43m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Wed 18/11

11:50-20:51

2 stops28h 01m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Thu 11/2

13:20-15:27

1 stop21h 07m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$679

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Sat 13/3

11:20-15:27

1 stop22h 07m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$746

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Wed 31/3

10:30-20:20

2 stops26h 50m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$746

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Fri 30/10

10:20-20:51

2 stops27h 31m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$746

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Mon 26/10

10:20-12:29

1 stop19h 09m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$746

Flights are sorted by cheapest return flights first.

Deals found on 5/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

SYD-ONT

BNE-ONT

MEL-ONT

ADL-ONT

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

AU0-ONT

SYD-ONT

BNE-ONT

MEL-ONT

ADL-ONT

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Ontario

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

10,316 reviews

Check prices

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

10,316 reviews

United Airlines

7.4

Good

10,316 reviews

Check prices

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

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?
United Airlines can get you from Australia to Ontario in just under 22h 43m. Your travel time can differ by up to . The distance between Australia and Ontario is about 12125 km.
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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Top airline flying from Australia to Ontario

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,059	Average$1,291	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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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Cheap flights from Australia to Ontario from $675

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Australia to Ontario

Cheapest flights from Australia to OntarioExplore 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 8 October 2026.

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 8 October 2026.

Best flights from Australia to OntarioDiscover carefully curated flight deals from Australia to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Discover carefully curated flight deals from Australia to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Australia to OntarioDiscover last-minute flight deals from Australia to Ontario. Data last updated 8 October 2026 and is based on user searches.

Discover last-minute flight deals from Australia to Ontario. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Australia to OntarioSearch for one-way flight options from Australia to Ontario. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Search for one-way flight options from Australia to Ontario. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Find flight deals from Australia to Ontario

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Use the filters below to find and compare flights from Australia to Ontario that are best for you.

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.

Cheapflights Insights

Reviews of airlines servicing Ontario

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.

Related info for your journey

What airport do you fly into for flights to Ontario from Australia?

How long is the flight from Australia to Ontario?

What are the most popular routes from Australia to Ontario?

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

How can I find direct flights from Australia to Ontario?

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

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.

Alternative routes for Australia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ontario by adding a car hire and/or hotel booking to your travel itinerary.

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Search flights from Australia to Ontario by cabin class

Find flights from Australia to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Australia and Ontario flights

Browse other Australia and Ontario flight options. Last updated on 8 October 2026.

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Top airline flying from Australia to Ontario

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How does Cheapflights help users find flights from Australia to Ontario?

Why should you use Cheapflights to find cheap flight tickets from Australia to Ontario?

Can Cheapflights find flights from Australia to Ontario with no change fees?

Can Cheapflights notify me if prices for flights from Australia to Ontario become cheaper?

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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 8 October 2026.

Best flights from Australia to Ontario
Discover carefully curated flight deals from Australia to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Australia to Ontario
Discover last-minute flight deals from Australia to Ontario. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Australia to Ontario
Search for one-way flight options from Australia to Ontario. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.