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

Which airlines fly to Sydney?

Qantas Airways, United Airlines and Fiji Airways 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 44% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 8 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 refreshed on a daily basis.

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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$702 Cheap Flights from Ontario to Sydney in 2025/26

1 adult

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Sydney

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 08:30

ONT

SYD

31h 30m2 stops

10:40 - 21:48

SYD

ONT

30h 08m2 stops

$1,404Delta

Sun, 1 Feb - Sun, 8 Feb

18:39 - 09:15

ONT

SYD

19h 36m1 stop

14:00 - 12:38

SYD

ONT

17h 38m1 stop

$1,472United Airlines

Sun, 1 Feb - Sun, 15 Feb

18:39 - 09:15

ONT

SYD

19h 36m1 stop

12:10 - 17:41

SYD

ONT

24h 31m1 stop

$1,476United Airlines

Sun, 8 Feb - Sat, 14 Feb

05:05 - 09:15

ONT

SYD

33h 10m2 stops

14:00 - 17:50

SYD

ONT

22h 50m1 stop

$1,478United Airlines

Wed, 21 Jan - Wed, 4 Feb

13:24 - 09:15

ONT

SYD

24h 51m2 stops

14:00 - 17:43

SYD

ONT

22h 43m1 stop

$1,479United Airlines

Wed, 21 Jan - Wed, 28 Jan

13:53 - 09:15

ONT

SYD

24h 22m1 stop

11:50 - 21:59

SYD

ONT

29h 09m1 stop

$1,481United Airlines

Sat, 7 Feb - Sat, 21 Feb

05:00 - 09:15

ONT

SYD

33h 15m2 stops

11:50 - 20:50

SYD

ONT

28h 00m2 stops

$1,482United Airlines

Sat, 28 Feb - Wed, 4 Mar

13:24 - 09:15

ONT

SYD

24h 51m2 stops

12:10 - 17:43

SYD

ONT

24h 33m1 stop

$1,484United Airlines

Sat, 7 Feb - Wed, 11 Feb

05:05 - 06:20

ONT

SYD

30h 15m2 stops

11:50 - 21:59

SYD

ONT

29h 09m1 stop

$1,487United Airlines

Sat, 7 Feb - Sat, 21 Feb

13:50 - 09:15

ONT

SYD

25h 25m2 stops

11:20 - 20:36

SYD

ONT

51h 16m2 stops

$1,499United Airlines

Sun, 15 Mar - Sun, 29 Mar

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

29 Dec

ONT18:39Ontario

19h 36m

1 stop

SYD09:15Sydney Kingsford Smith

12 Jan

SYD12:10Sydney Kingsford Smith

18h 08m

1 stop

ONT11:18Ontario

$1,455

Find similar

United Airlines

29 Dec

ONT18:39Ontario

19h 36m

1 stop

SYD09:15Sydney Kingsford Smith

12 Jan

SYD12:10Sydney Kingsford Smith

18h 08m

1 stop

ONT11:18Ontario

$1,456

Find similar

United Airlines

29 Dec

ONT18:39Ontario

19h 36m

1 stop

SYD09:15Sydney Kingsford Smith

12 Jan

SYD12:10Sydney Kingsford Smith

18h 08m

1 stop

ONT11:18Ontario

$1,458

Find similar

Hawaiian Airlines flights from Ontario to Sydney

Our best Hawaiian Airlines deals on Ontario to Sydney flight tickets

Hawaiian Airlines

12 Jan

ONT08:13Ontario

40h 32m

1 stop

SYD19:45Sydney Kingsford Smith

31 Jan

SYD21:40Sydney Kingsford Smith

19h 48m

1 stop

ONT22:28Ontario

$1,621

Find similar

Hawaiian Airlines

17 Jan

ONT08:13Ontario

40h 32m

1 stop

SYD19:45Sydney Kingsford Smith

24 Jan

SYD21:40Sydney Kingsford Smith

19h 48m

1 stop

ONT22:28Ontario

$1,727

Find similar

Hawaiian Airlines

4 Jan

ONT08:00Ontario

40h 45m

1 stop

SYD19:45Sydney Kingsford Smith

19 Jan

SYD21:40Sydney Kingsford Smith

19h 48m

1 stop

ONT22:28Ontario

$1,919

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 1/2

06:00-08:30

2 stops31h 30m

Sydney Kingsford Smith

Sun 8/2

10:40-21:48

2 stops30h 08m

$1,404

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 1/2

18:39-09:15

1 stop19h 36m

Sydney Kingsford Smith

Sun 15/2

14:00-12:38

1 stop17h 38m

$1,472

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 8/2

18:39-09:15

1 stop19h 36m

Sydney Kingsford Smith

Sat 14/2

12:10-17:41

1 stop24h 31m

$1,476

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 21/1

05:05-09:15

2 stops33h 10m

Sydney Kingsford Smith

Wed 4/2

14:00-17:50

1 stop22h 50m

$1,478

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 21/1

13:24-09:15

2 stops24h 51m

Sydney Kingsford Smith

Wed 28/1

14:00-17:43

1 stop22h 43m

$1,479

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 7/2

13:53-09:15

1 stop24h 22m

Sydney Kingsford Smith

Sat 21/2

11:50-21:59

1 stop29h 09m

$1,481

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 28/2

05:00-09:15

2 stops33h 15m

Sydney Kingsford Smith

Wed 4/3

11:50-20:50

2 stops28h 00m

$1,482

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 7/2

13:24-09:15

2 stops24h 51m

Sydney Kingsford Smith

Wed 11/2

12:10-17:43

1 stop24h 33m

$1,484

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 7/2

05:05-06:20

2 stops30h 15m

Sydney Kingsford Smith

Sat 21/2

11:50-21:59

1 stop29h 09m

$1,487

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 15/3

13:50-09:15

2 stops25h 25m

Sydney Kingsford Smith

Sun 29/3

11:20-20:36

2 stops51h 16m

$1,499

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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?

Our data shows that Wednesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,327. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,999.

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 afternoon. momondo users have found flights departing from Ontario to Sydney in the afternoon for as low as $1,463. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are $1,940 on average. Flights to Sydney from Ontario at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 return 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

Fastest flight time	17h 43m
Direct flights	None

The fastest flight from Ontario to Sydney takes 17h 43m

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?
The distance between Ontario and Sydney Kingsford Smith is about 12114.1 km. Flights usually cover this in 17h 43m, depending on flying conditions and air traffic around both airports.
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 refreshed on a daily basis.
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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Leura

Manly

Bondi Beach

Coogee

Cronulla

Randwick

Charlestown

Newport

Swansea

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Sydney . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Ontario to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Ontario and Sydney by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Ontario to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.