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 46% 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.

$692 Cheap Flights from Ontario to Sydney in 2025/26

1 adult

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Find the cheapest flights from Ontario to Sydney

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One-way

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13:53 - 06:20

ONT

SYD

21h 27m1 stop

12:10 - 11:18

SYD

ONT

18h 08m1 stop

$1,438United Airlines

Sun, 18 Jan - Sun, 1 Feb

13:53 - 06:20

ONT

SYD

21h 27m1 stop

12:10 - 17:41

SYD

ONT

24h 31m1 stop

$1,449United Airlines

Wed, 11 Feb - Wed, 18 Feb

13:53 - 06:20

ONT

SYD

21h 27m1 stop

12:10 - 11:18

SYD

ONT

18h 08m1 stop

$1,454United Airlines

Mon, 19 Jan - Fri, 23 Jan

05:05 - 09:15

ONT

SYD

33h 10m2 stops

11:50 - 21:58

SYD

ONT

29h 08m1 stop

$1,457United Airlines

Sun, 25 Jan - Sun, 1 Feb

13:53 - 06:20

ONT

SYD

21h 27m1 stop

14:00 - 12:17

SYD

ONT

17h 17m1 stop

$1,458United Airlines

Sat, 24 Jan - Sat, 31 Jan

13:53 - 06:20

ONT

SYD

21h 27m1 stop

14:00 - 20:58

SYD

ONT

25h 58m2 stops

$1,461United Airlines

Thu, 22 Jan - Mon, 2 Feb

18:32 - 06:20

ONT

SYD

40h 48m1 stop

14:00 - 17:51

SYD

ONT

22h 51m1 stop

$1,463United Airlines

Sat, 17 Jan - Sat, 24 Jan

05:05 - 09:15

ONT

SYD

33h 10m2 stops

14:00 - 12:17

SYD

ONT

17h 17m1 stop

$1,466United Airlines

Sat, 24 Jan - Sat, 31 Jan

18:32 - 06:20

ONT

SYD

40h 48m1 stop

12:10 - 20:58

SYD

ONT

27h 48m2 stops

$1,470United Airlines

Sat, 17 Jan - Sat, 24 Jan

18:49 - 07:55

ONT

SYD

19h 06m1 stop

10:20 - 12:38

SYD

ONT

43h 18m2 stops

$1,478United Airlines

Mon, 30 Mar - Mon, 13 Apr

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

18 Jan

ONT13:53Ontario

21h 27m

1 stop

SYD06:20Sydney Kingsford Smith

1 Feb

SYD12:10Sydney Kingsford Smith

18h 08m

1 stop

ONT11:18Ontario

$1,438

Find similar

United Airlines

11 Feb

ONT13:53Ontario

21h 27m

1 stop

SYD06:20Sydney Kingsford Smith

18 Feb

SYD12:10Sydney Kingsford Smith

24h 31m

1 stop

ONT17:41Ontario

$1,449

Find similar

United Airlines

1 Jan

ONT10:42Ontario

24h 38m

1 stop

SYD06:20Sydney Kingsford Smith

9 Feb

SYD12:10Sydney Kingsford Smith

18h 08m

1 stop

ONT11:18Ontario

$1,454

Find similar

Qatar Airways flights from Ontario to Sydney

Our best Qatar Airways deals on Ontario to Sydney flight tickets

Qatar Airways

2 Jan

ONT10:44Ontario

37h 06m

2 stops

SYD18:50Sydney Kingsford Smith

17 Jan

SYD15:50Sydney Kingsford Smith

51h 06m

2 stops

ONT23:56Ontario

$4,484

Find similar

Qatar Airways

5 Jan

ONT10:44Ontario

37h 06m

2 stops

SYD18:50Sydney Kingsford Smith

20 Jan

SYD21:40Sydney Kingsford Smith

41h 56m

2 stops

ONT20:36Ontario

$4,686

Find similar

Qatar Airways

12 Jan

ONT11:53Ontario

47h 57m

2 stops

SYD06:50Sydney Kingsford Smith

15 Jan

SYD15:50Sydney Kingsford Smith

51h 06m

2 stops

ONT23:56Ontario

$4,856

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 18/1

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Sun 1/2

12:10-11:18

1 stop18h 08m

$1,438

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 11/2

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Wed 18/2

12:10-17:41

1 stop24h 31m

$1,449

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 19/1

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Fri 23/1

12:10-11:18

1 stop18h 08m

$1,454

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 25/1

05:05-09:15

2 stops33h 10m

Sydney Kingsford Smith

Sun 1/2

11:50-21:58

1 stop29h 08m

$1,457

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 24/1

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Sat 31/1

14:00-12:17

1 stop17h 17m

$1,458

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 22/1

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Mon 2/2

14:00-20:58

2 stops25h 58m

$1,461

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 17/1

18:32-06:20

1 stop40h 48m

Sydney Kingsford Smith

Sat 24/1

14:00-17:51

1 stop22h 51m

$1,463

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 24/1

05:05-09:15

2 stops33h 10m

Sydney Kingsford Smith

Sat 31/1

14:00-12:17

1 stop17h 17m

$1,466

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 17/1

18:32-06:20

1 stop40h 48m

Sydney Kingsford Smith

Sat 24/1

12:10-20:58

2 stops27h 48m

$1,470

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 30/3

18:49-07:55

1 stop19h 06m

Sydney Kingsford Smith

Mon 13/4

10:20-12:38

2 stops43h 18m

$1,478

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 Monday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,308. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,841.

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	19h 01m
Direct flights	None

The fastest flight from Ontario to Sydney takes 19h 01m

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 19h 01m, 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.

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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.