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, 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 51% 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.

$799 Cheap Flights from Ontario to Sydney in 2026

1 adult

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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.

08:32 - 18:50

ONT

SYD

40h 18m

1 stop

20:45 - 21:10

SYD

ONT

17h 25m

1 stop

$1,457Multiple Airlines

Thu, 2 Apr - Fri, 24 Apr

07:50 - 18:50

ONT

SYD

18h 00m

1 stop

20:45 - 21:28

SYD

ONT

17h 43m

1 stop

$1,488Multiple Airlines

Wed, 24 Jun - Sun, 13 Sep

08:41 - 19:45

ONT

SYD

40h 04m

1 stop

21:40 - 22:15

SYD

ONT

19h 35m

1 stop

$1,512Multiple Airlines

Fri, 27 Feb - Thu, 5 Mar

13:53 - 06:20

ONT

SYD

21h 27m

1 stop

12:10 - 12:38

SYD

ONT

19h 28m

1 stop

$1,531United Airlines

Sun, 8 Feb - Sun, 22 Feb

10:37 - 06:55

ONT

SYD

27h 18m

1 stop

10:20 - 09:41

SYD

ONT

16h 21m

1 stop

$1,532United Airlines

Mon, 4 May - Tue, 12 May

18:37 - 09:15

ONT

SYD

19h 38m

1 stop

14:00 - 12:38

SYD

ONT

17h 38m

1 stop

$1,534United Airlines

Wed, 18 Feb - Tue, 3 Mar

08:00 - 07:00

ONT

SYD

28h 00m

1 stop

12:10 - 12:38

SYD

ONT

19h 28m

1 stop

$1,535United Airlines

Tue, 24 Feb - Mon, 2 Mar

08:41 - 19:45

ONT

SYD

40h 04m

1 stop

20:45 - 22:20

SYD

ONT

18h 35m

1 stop

$1,536Multiple Airlines

Thu, 19 Feb - Fri, 24 Jul

13:40 - 06:55

ONT

SYD

24h 15m

2 stops

10:20 - 09:41

SYD

ONT

16h 21m

1 stop

$1,538United Airlines

Mon, 4 May - Tue, 12 May

13:40 - 09:15

ONT

SYD

25h 35m

1 stop

11:20 - 22:45

SYD

ONT

29h 25m

1 stop

$1,541United Airlines

Sun, 8 Mar - Mon, 30 Mar

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

1 Feb

ONT18:39Ontario

19h 36m

1 stop

SYD09:15Sydney Kingsford Smith

15 Feb

SYD12:10Sydney Kingsford Smith

19h 28m

1 stop

ONT12:38Ontario

$1,528

United Airlines

1 Feb

ONT13:53Ontario

21h 27m

1 stop

SYD06:20Sydney Kingsford Smith

15 Feb

SYD12:10Sydney Kingsford Smith

19h 28m

1 stop

ONT12:38Ontario

$1,529

United Airlines

8 Feb

ONT13:53Ontario

21h 27m

1 stop

SYD06:20Sydney Kingsford Smith

22 Feb

SYD12:10Sydney Kingsford Smith

19h 28m

1 stop

ONT12:38Ontario

$1,531

China Airlines flights from Ontario to Sydney

Our best China Airlines deals on Ontario to Sydney flight tickets

China Airlines

9 Feb

ONT22:50Ontario

38h 45m

2 stops

SYD08:35Sydney Kingsford Smith

15 Feb

SYD12:45Sydney Kingsford Smith

47h 05m

2 stops

ONT16:50Ontario

$3,266

China Airlines

9 Feb

ONT22:50Ontario

38h 45m

2 stops

SYD08:35Sydney Kingsford Smith

24 Feb

SYD22:10Sydney Kingsford Smith

37h 40m

1 stop

ONT16:50Ontario

$3,355

China Airlines

10 Feb

ONT22:50Ontario

40h 55m

2 stops

SYD10:45Sydney Kingsford Smith

4 Mar

SYD22:10Sydney Kingsford Smith

37h 40m

1 stop

ONT16:50Ontario

$3,409

Fly from

Fly to

Route

Depart

Return

Price

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 2/4

08:32-18:50

1 stop40h 18m

Sydney Kingsford Smith

Fri 24/4

20:45-21:10

1 stop17h 25m

$1,457

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 24/6

07:50-18:50

1 stop18h 00m

Sydney Kingsford Smith

Sun 13/9

20:45-21:28

1 stop17h 43m

$1,488

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 27/2

08:41-19:45

1 stop40h 04m

Sydney Kingsford Smith

Thu 5/3

21:40-22:15

1 stop19h 35m

$1,512

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 8/2

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Sun 22/2

12:10-12:38

1 stop19h 28m

$1,531

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 4/5

10:37-06:55

1 stop27h 18m

Sydney Kingsford Smith

Tue 12/5

10:20-09:41

1 stop16h 21m

$1,532

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 18/2

18:37-09:15

1 stop19h 38m

Sydney Kingsford Smith

Tue 3/3

14:00-12:38

1 stop17h 38m

$1,534

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 24/2

08:00-07:00

1 stop28h 00m

Sydney Kingsford Smith

Mon 2/3

12:10-12:38

1 stop19h 28m

$1,535

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 19/2

08:41-19:45

1 stop40h 04m

Sydney Kingsford Smith

Fri 24/7

20:45-22:20

1 stop18h 35m

$1,536

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 4/5

13:40-06:55

2 stops24h 15m

Sydney Kingsford Smith

Tue 12/5

10:20-09:41

1 stop16h 21m

$1,538

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 8/3

13:40-09:15

1 stop25h 35m

Sydney Kingsford Smith

Mon 30/3

11:20-22:45

1 stop29h 25m

$1,541

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 $1,281. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,756.

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	18h 00m
Direct flights	None

The fastest flight from Ontario to Sydney takes 18h 00m

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 18h 00m, 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

Coogee

Bondi Beach

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.