How long is the flight from Australia to Ontario?

United Airlines can get you from Australia to Ontario in just under 18h 58m. 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 Perth - 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.

$689+ 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 23 September 2026.

Mon 2/1110:40 -

2 stops24h 43m

Mon 9/1106:00 -

2 stops31h 30m

Deal found 18/9$1,120

Mon 5/1011:20 -

1 stop18h 58m

Sun 18/1016:03 -

1 stop21h 52m

Deal found 23/9$1,175

Mon 5/1011:20 -

1 stop18h 58m

Sun 18/1016:03 -

1 stop21h 52m

Deal found 18/9$1,197

Thu 29/1011:50 -

1 stop21h 43m

Mon 2/1109:25 -

1 stop28h 55m

Deal found 22/9$1,199

Fri 6/1110:40 -

2 stops29h 31m

Fri 13/1113:15 -

2 stops25h 15m

Deal found 22/9$1,215

Thu 29/1011:50 -

1 stop18h 39m

Fri 13/1116:17 -

1 stop22h 03m

Deal found 23/9$1,269

Fri 30/1010:20 -

1 stop19h 09m

Fri 13/1118:37 -

1 stop18h 53m

Deal found 21/9$1,297

Mon 2/1111:20 -

1 stop19h 09m

Wed 11/1113:29 -

2 stops24h 01m

Deal found 22/9$1,298

Sun 4/1010:30 -

1 stop18h 48m

Wed 21/1016:03 -

1 stop21h 27m

Deal found 21/9$1,301

Mon 12/1011:55 -

1 stop21h 27m

Tue 20/1016:03 -

1 stop23h 12m

Deal found 23/9$1,315

Thu 24/910:55 -

1 stop21h 27m

Tue 29/906:00 -

2 stops57h 15m

Deal found 22/9$1,317

Mon 26/1011:45 -

1 stop18h 44m

Sun 8/1118:37 -

1 stop20h 53m

Deal found 23/9$1,318

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 23 September 2026.

Mon 5/1011:20 -

1 stop18h 58m

Sun 18/1016:03 -

1 stop21h 52m

Deal found 18/9$1,197

Sun 27/1211:20 -

1 stop29h 33m

Mon 11/116:03 -

1 stop21h 27m

Deal found 23/9$2,222

Tue 10/1116:45 -

2 stops43h 20m

Sun 22/1122:50 -

2 stops47h 25m

Deal found 23/9$2,376

Wed 30/910:20 -

1 stop17h 03m

Sat 3/1013:22 -

2 stops48h 33m

Deal found 19/9$1,202

Fri 9/1019:10 -

2 stops43h 49m

Fri 16/1007:00 -

2 stops22h 05m

Deal found 23/9$2,597

Thu 29/1011:50 -

2 stops42h 40m

Mon 2/1105:00 -

2 stops33h 20m

Deal found 21/9$1,202

Fri 20/1111:50 -

1 stop22h 43m

Sun 29/1116:17 -

1 stop22h 03m

Deal found 18/9$1,270

Fri 30/1010:20 -

1 stop19h 09m

Fri 13/1118:37 -

1 stop18h 53m

Deal found 23/9$1,300

Sun 11/1010:30 -

1 stop18h 48m

Mon 12/1005:00 -

2 stops32h 30m

Deal found 20/9$1,301

Mon 5/1022:00 -

2 stops38h 14m

Mon 19/1011:13 -

2 stops35h 17m

Deal found 20/9$4,024

Mon 12/1011:55 -

1 stop18h 23m

Tue 20/1013:22 -

2 stops25h 53m

Deal found 23/9$1,317

Mon 9/1112:45 -

1 stop21h 48m

Sun 15/1113:35 -

1 stop25h 55m

Deal found 22/9$1,320

Sat 6/323:10 -

1 stop35h 55m

Wed 10/322:50 -

1 stop41h 55m

Deal found 22/9$2,495

Sat 24/1011:55 -

1 stop21h 27m

Sat 31/1013:29 -

2 stops51h 01m

Deal found 19/9$1,390

Sat 7/1112:45 -

1 stop21h 48m

Mon 16/1116:17 -

1 stop23h 13m

Deal found 22/9$1,390

Thu 5/1112:45 -

1 stop24h 11m

Thu 12/1113:29 -

2 stops26h 01m

Deal found 21/9$1,390

Sun 21/211:20 -

1 stop22h 07m

Wed 3/318:53 -

2 stops24h 27m

Deal found 20/9$1,414

Thu 26/1107:35 -

2 stops21h 08m

Mon 15/218:53 -

1 stop18h 37m

Deal found 22/9$1,414

Wed 21/1007:10 -

2 stops21h 13m

Wed 28/1016:17 -

1 stop23h 13m

Deal found 21/9$1,416

Thu 22/1006:05 -

2 stops23h 13m

Wed 28/1016:17 -

1 stop21h 13m

Deal found 21/9$1,416

Mon 18/108:00 -

2 stops20h 47m

Mon 22/218:53 -

2 stops23h 42m

Deal found 21/9$1,454

Sun 24/108:10 -

2 stops20h 37m

Thu 4/318:53 -

1 stop20h 37m

Deal found 19/9$1,556

Wed 21/1006:10 -

2 stops21h 43m

Wed 28/1016:17 -

2 stops26h 13m

Deal found 22/9$1,576

Tue 20/1006:10 -

2 stops21h 43m

Tue 17/1116:17 -

2 stops27h 23m

Deal found 23/9$1,577

Mon 5/1007:40 -

2 stops30h 21m

Mon 12/1018:32 -

2 stops25h 43m

Deal found 18/9$1,583

Tue 16/306:10 -

2 stops21h 17m

Fri 30/416:03 -

2 stops26h 32m

Deal found 21/9$1,651

Thu 11/211:20 -

1 stop19h 00m

Tue 2/313:00 -

2 stops48h 30m

Deal found 19/9$1,861

Sun 18/1011:20 -

1 stop18h 58m

Sun 25/1016:17 -

1 stop23h 03m

Deal found 18/9$1,914

Wed 24/212:45 -

1 stop18h 35m

Wed 3/318:53 -

2 stops23h 12m

Deal found 23/9$1,960

Thu 1/1010:20 -

1 stop29h 31m

Sun 4/1006:07 -

1 stop31h 48m

Deal found 18/9$1,982

Find flight deals from Australia to Ontario

Round-trip from	$1,120
One-way from	$689
Popular in	December
Cheapest in	August
Average price	$1,158

Delta
2/11-9/11
4 total stops
56h 13m total
Australia to Ontario

Search Deals

Virgin Australia
28/9-31/12
1 total stop
17h 03m total
Australia to Ontario

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($128 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($42 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 20/10

11:20-15:22

1 stop22h 02m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$690

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 8/12

11:50-15:35

1 stop22h 45m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$690

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Wed 2/12

11:50-09:38

1 stop16h 48m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$692

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 16/11

11:50-20:15

1 stop27h 25m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$692

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 7/12

11:50-12:34

2 stops43h 44m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$692

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 23/11

11:50-20:51

2 stops28h 01m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$692

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Thu 22/10

11:20-17:36

1 stop24h 16m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$692

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 5/10

11:20-22:49

2 stops29h 29m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$692

Fastest return journey

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Tue 2/2

11:20-09:47

1 stop16h 27m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$741

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Sun 31/1

11:20-09:47

1 stop16h 27m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$743

Flights are sorted by cheapest return flights first.

Deals found on 22/9

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

10,226 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

10,226 reviews

United Airlines

7.4

Good

10,226 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 18h 58m. 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 Perth - 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

Alternative routes

Complete your trip

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Top airline flying from Australia to Ontario

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,043	Average$1,137	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 $689

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/9. 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 23 September 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 23 September 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 23 September 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 23 September 2026.

Last-minute flights from Australia to OntarioDiscover last-minute flight deals from Australia to Ontario. Data last updated 23 September 2026 and is based on user searches.

Discover last-minute flight deals from Australia to Ontario. Data last updated 23 September 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 23 September 2026.

Search for one-way flight options from Australia to Ontario. Find affordable one-way fares based on user searches. Data last updated 23 September 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 23 September 2026.

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Check out other popular destinations found by fellow travellers in 2026

Top airline flying from Australia to Ontario

Fly with Cheapflights

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 23 September 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 23 September 2026.

Last-minute flights from Australia to Ontario
Discover last-minute flight deals from Australia to Ontario. Data last updated 23 September 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 23 September 2026.