What is the cheapest airline that flies from Ontario to Sydney Kingsford Smith?

United Airlines is the most popular carrier operating from Ontario to Sydney Kingsford Smith

What airlines fly to Sydney?

Qantas Airways, Fiji Airways and United Airlines are the top three most popular airlines that fly to Sydney from Ontario according to our data. Qantas Airways is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 13 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Sydney Kingsford Smith Airport?

Prices for flights from Ontario Airport to Sydney Kingsford Smith Airport are updated daily.

How many operators does momondo search for flights from Ontario Airport to Sydney Kingsford Smith Airport?

There is 1 operator available for flights from Ontario Airport to Sydney Kingsford Smith Airport as of November 2025.

How old do you have to be to fly from Ontario Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$464 Cheap Flights from Ontario to Sydney in 2025/26

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6:41 pm - 9:15 amONT-SYD

19h 34m1 stop

12:10 pm - 12:18 pmSYD-ONT

19h 08m1 stop

$963United Airlines

Find Deal

Sun, Dec 7 - Thu, Dec 11

6:41 pm - 9:15 amONT-SYD

19h 34m1 stop

12:10 pm - 12:17 pmSYD-ONT

19h 07m1 stop

$964United Airlines

Find Deal

Fri, Dec 5 - Tue, Dec 9

6:39 pm - 9:15 amONT-SYD

19h 36m1 stop

12:10 pm - 12:38 pmSYD-ONT

19h 28m1 stop

$971United Airlines

Find Deal

Sun, Feb 8 - Mon, Feb 23

6:00 am - 7:00 amONT-SYD

30h 00m1 stop

11:50 am - 10:36 pmSYD-ONT

28h 46m1 stop

$972United Airlines

Find Deal

Sun, Mar 1 - Sun, Mar 22

6:00 am - 7:00 amONT-SYD

30h 00m2 stops

12:10 pm - 5:37 pmSYD-ONT

24h 27m1 stop

$974United Airlines

Find Deal

Thu, Dec 11 - Mon, Dec 15

6:00 am - 7:00 amONT-SYD

30h 00m1 stop

11:50 am - 9:49 pmSYD-ONT

28h 59m1 stop

$975United Airlines

Find Deal

Tue, Dec 2 - Sat, Dec 6

1:40 pm - 9:15 amONT-SYD

24h 35m1 stop

12:10 pm - 9:07 pmSYD-ONT

27h 57m2 stops

$976United Airlines

Find Deal

Sun, Nov 30 - Mon, Dec 29

6:00 am - 7:00 amONT-SYD

30h 00m2 stops

12:10 pm - 12:18 pmSYD-ONT

19h 08m1 stop

$977United Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

5:05 am - 9:15 amONT-SYD

33h 10m2 stops

2:00 pm - 12:18 pmSYD-ONT

17h 18m1 stop

$978United Airlines

Find Deal

Mon, Dec 8 - Fri, Dec 12

5:00 am - 6:20 amONT-SYD

30h 20m2 stops

12:10 pm - 8:50 pmSYD-ONT

27h 40m2 stops

$979United Airlines

Find Deal

Sun, Feb 15 - Thu, Feb 19

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

Nov 23

ONT6:38 pmOntario

19h 37m

1 stop

SYD9:15 amSydney Kingsford Smith

Dec 7

SYD12:10 pmSydney Kingsford Smith

19h 08m

1 stop

ONT12:18 pmOntario

$959

Find similar

United Airlines

Nov 23

ONT6:38 pmOntario

19h 37m

1 stop

SYD9:15 amSydney Kingsford Smith

Dec 7

SYD2:00 pmSydney Kingsford Smith

17h 18m

1 stop

ONT12:18 pmOntario

$960

Find similar

United Airlines

Nov 23

ONT6:38 pmOntario

19h 37m

1 stop

SYD9:15 amSydney Kingsford Smith

Dec 7

SYD2:00 pmSydney Kingsford Smith

17h 18m

1 stop

ONT12:18 pmOntario

$961

Find similar

Alaska Airlines flights from Ontario to Sydney

Our best Alaska Airlines deals on Ontario to Sydney flight tickets

Alaska Airlines

Feb 3

ONT8:13 amOntario

40h 32m

1 stop

SYD7:45 pmSydney Kingsford Smith

Feb 10

SYD9:40 pmSydney Kingsford Smith

19h 48m

1 stop

ONT10:28 pmOntario

$1,064

Find similar

Alaska Airlines

Jan 10

ONT8:13 amOntario

40h 32m

1 stop

SYD7:45 pmSydney Kingsford Smith

Jan 31

SYD9:40 pmSydney Kingsford Smith

19h 48m

1 stop

ONT10:28 pmOntario

$1,076

Find similar

Alaska Airlines

Jan 17

ONT8:13 amOntario

40h 32m

1 stop

SYD7:45 pmSydney Kingsford Smith

Jan 25

SYD9:40 pmSydney Kingsford Smith

19h 48m

1 stop

ONT10:28 pmOntario

$1,077

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 12/7

6:41 pm-9:15 am

1 stop19h 34m

Sydney Kingsford Smith

Thu 12/11

12:10 pm-12:18 pm

1 stop19h 08m

$963

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 12/5

6:41 pm-9:15 am

1 stop19h 34m

Sydney Kingsford Smith

Tue 12/9

12:10 pm-12:17 pm

1 stop19h 07m

$964

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 2/8

6:39 pm-9:15 am

1 stop19h 36m

Sydney Kingsford Smith

Mon 2/23

12:10 pm-12:38 pm

1 stop19h 28m

$971

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 3/1

6:00 am-7:00 am

1 stop30h 00m

Sydney Kingsford Smith

Sun 3/22

11:50 am-10:36 pm

1 stop28h 46m

$972

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 12/11

6:00 am-7:00 am

2 stops30h 00m

Sydney Kingsford Smith

Mon 12/15

12:10 pm-5:37 pm

1 stop24h 27m

$974

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 12/2

6:00 am-7:00 am

1 stop30h 00m

Sydney Kingsford Smith

Sat 12/6

11:50 am-9:49 pm

1 stop28h 59m

$975

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 11/30

1:40 pm-9:15 am

1 stop24h 35m

Sydney Kingsford Smith

Mon 12/29

12:10 pm-9:07 pm

2 stops27h 57m

$976

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 12/6

6:00 am-7:00 am

2 stops30h 00m

Sydney Kingsford Smith

Sat 12/13

12:10 pm-12:18 pm

1 stop19h 08m

$977

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 12/8

5:05 am-9:15 am

2 stops33h 10m

Sydney Kingsford Smith

Fri 12/12

2:00 pm-12:18 pm

1 stop17h 18m

$978

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 2/15

5:00 am-6:20 am

2 stops30h 20m

Sydney Kingsford Smith

Thu 2/19

12:10 pm-8:50 pm

2 stops27h 40m

$979

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Ontario to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Ontario to Sydney is on a Wednesday when prices can be found for as low as $1,010. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,084.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Ontario to Sydney in the morning for as low as $949. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly at noon, with an average ticket price of $1,126. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Ontario to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Sydney (ONT to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Sydney

Direct flights	None

There are no direct flights from Ontario to Sydney. There are no popular flight routes from Ontario to Sydney.

Search flight deals

How far is Ontario to Sydney Kingsford Smith by plane?
A flight from Ontario to Sydney Kingsford Smith will travel around 7527.4 mi. 19h 02m is a normal flight duration for this route.
When did momondo last update prices for flights from Ontario Airport to Sydney Kingsford Smith Airport?
Prices for flights from Ontario Airport to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Sydney Kingsford Smith Airport?
There is 1 operator available for flights from Ontario Airport to Sydney Kingsford Smith Airport as of November 2025.
How old do you have to be to fly from Ontario Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Sydney?
Based on momondo bookings for flights between Ontario and Sydney, the leading airline is United Airlines, making up 100% of the total bookings.

Best airlines flying from Ontario to Sydney

Compare and see reviews for airlines that fly from Ontario to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $926	Free Cancellation	Rating 7.4 9,029 reviews		Search United Airlines flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Randwick

Coogee

Cronulla

Manly

Penrith

Leura

Lithgow

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Sydney?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Sydney. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Sydney with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sydney from Ontario with this policy.

How can momondo help me find flights from Ontario to Sydney?

Once all potential Ontario to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Sydney right now. Can momondo alert me if prices change?

Price alerts on flights to Sydney from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Ontario to Sydney from $464

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Sydney departing on 2/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

Alaska Airlines flights from Ontario to Sydney

Our best Alaska Airlines deals on Ontario to Sydney flight tickets

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How to get the cheapest flight ticket from Ontario to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Ontario to Sydney is on a Wednesday when prices can be found for as low as $1,010. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,084.

What is the cheapest time of day to depart on your flight to Sydney?

What is the cheapest airline that flies from Ontario to Sydney Kingsford Smith?

United Airlines is the most popular carrier operating from Ontario to Sydney Kingsford Smith

What airlines fly to Sydney?

When to book flights from Ontario to Sydney

Cheap Ontario to Sydney (ONT to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Sydney

Direct flights

How far is Ontario to Sydney Kingsford Smith by plane?

When did momondo last update prices for flights from Ontario Airport to Sydney Kingsford Smith Airport?

How many operators does momondo search for flights from Ontario Airport to Sydney Kingsford Smith Airport?

How old do you have to be to fly from Ontario Airport to Sydney Kingsford Smith Airport?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

What is the most popular airline from Ontario to Sydney?

Best airlines flying from Ontario to Sydney

Compare and see reviews for airlines that fly from Ontario to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Sydney?

Can I find flights from Ontario to Sydney with flexible booking policies on momondo?

How can momondo help me find flights from Ontario to Sydney?

I’m not ready to book a flight from Ontario to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales