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 43% 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.

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

United Airlines and Delta are the most popular carriers operating from Ontario to Sydney Kingsford Smith

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.

$708 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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17:05 - 06:35ONT-SYD

20h 30m2 stops

09:25 - 16:14SYD-ONT

23h 49m2 stops

$1,417Delta

Find Deal

Mon, 27 Apr - Sat, 9 May

13:53 - 06:20ONT-SYD

21h 27m1 stop

12:10 - 11:18SYD-ONT

18h 08m1 stop

$1,467United Airlines

Find Deal

Tue, 3 Feb - Mon, 9 Feb

18:53 - 06:55ONT-SYD

19h 02m1 stop

10:20 - 12:20SYD-ONT

19h 00m1 stop

$1,480United Airlines

Find Deal

Tue, 19 May - Tue, 26 May

18:41 - 09:15ONT-SYD

19h 34m1 stop

12:10 - 12:17SYD-ONT

19h 07m1 stop

$1,481United Airlines

Find Deal

Tue, 9 Dec - Mon, 15 Dec

18:41 - 09:15ONT-SYD

19h 34m1 stop

12:10 - 09:59SYD-ONT

16h 49m1 stop

$1,484United Airlines

Find Deal

Wed, 10 Dec - Sat, 27 Dec

13:50 - 09:15ONT-SYD

24h 25m1 stop

12:10 - 10:01SYD-ONT

16h 51m1 stop

$1,486United Airlines

Find Deal

Tue, 9 Dec - Fri, 19 Dec

13:53 - 06:20ONT-SYD

21h 27m1 stop

14:00 - 20:58SYD-ONT

25h 58m2 stops

$1,489United Airlines

Find Deal

Wed, 28 Jan - Sun, 8 Feb

18:39 - 09:15ONT-SYD

19h 36m1 stop

12:10 - 12:18SYD-ONT

18h 08m1 stop

$1,490United Airlines

Find Deal

Fri, 6 Feb - Thu, 19 Mar

05:00 - 06:55ONT-SYD

32h 55m2 stops

10:20 - 20:17SYD-ONT

26h 57m2 stops

$1,492United Airlines

Find Deal

Sat, 16 May - Sun, 31 May

11:00 - 06:55ONT-SYD

26h 55m1 stop

10:20 - 15:18SYD-ONT

21h 58m2 stops

$1,493United Airlines

Find Deal

Mon, 27 Apr - Sat, 9 May

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

3 Feb

ONT13:53Ontario

21h 27m

1 stop

SYD06:20Sydney Kingsford Smith

9 Feb

SYD12:10Sydney Kingsford Smith

18h 08m

1 stop

ONT11:18Ontario

$1,467

Find similar

United Airlines

19 May

ONT18:53Ontario

19h 02m

1 stop

SYD06:55Sydney Kingsford Smith

26 May

SYD10:20Sydney Kingsford Smith

19h 00m

1 stop

ONT12:20Ontario

$1,480

Find similar

United Airlines

9 Dec

ONT18:41Ontario

19h 34m

1 stop

SYD09:15Sydney Kingsford Smith

15 Dec

SYD12:10Sydney Kingsford Smith

19h 07m

1 stop

ONT12:17Ontario

$1,481

Find similar

Alaska Airlines flights from Ontario to Sydney

Our best Alaska Airlines deals on Ontario to Sydney flight tickets

Alaska Airlines

27 May

ONT08:00Ontario

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

30 May

SYD20:45Sydney Kingsford Smith

17h 42m

1 stop

ONT21:27Ontario

$1,586

Find similar

Alaska Airlines

16 May

ONT08:00Ontario

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

21 May

SYD20:45Sydney Kingsford Smith

17h 42m

1 stop

ONT21:27Ontario

$1,615

Find similar

Alaska Airlines

7 Jan

ONT08:13Ontario

40h 32m

1 stop

SYD19:45Sydney Kingsford Smith

18 Jan

SYD21:40Sydney Kingsford Smith

19h 48m

1 stop

ONT22:28Ontario

$1,640

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 27/4

17:05-06:35

2 stops20h 30m

Sydney Kingsford Smith

Sat 9/5

09:25-16:14

2 stops23h 49m

$1,417

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 3/2

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Mon 9/2

12:10-11:18

1 stop18h 08m

$1,467

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 19/5

18:53-06:55

1 stop19h 02m

Sydney Kingsford Smith

Tue 26/5

10:20-12:20

1 stop19h 00m

$1,480

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 9/12

18:41-09:15

1 stop19h 34m

Sydney Kingsford Smith

Mon 15/12

12:10-12:17

1 stop19h 07m

$1,481

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 10/12

18:41-09:15

1 stop19h 34m

Sydney Kingsford Smith

Sat 27/12

12:10-09:59

1 stop16h 49m

$1,484

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 9/12

13:50-09:15

1 stop24h 25m

Sydney Kingsford Smith

Fri 19/12

12:10-10:01

1 stop16h 51m

$1,486

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 28/1

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Sun 8/2

14:00-20:58

2 stops25h 58m

$1,489

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 6/2

18:39-09:15

1 stop19h 36m

Sydney Kingsford Smith

Thu 19/3

12:10-12:18

1 stop18h 08m

$1,490

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 16/5

05:00-06:55

2 stops32h 55m

Sydney Kingsford Smith

Sun 31/5

10:20-20:17

2 stops26h 57m

$1,492

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 27/4

11:00-06:55

1 stop26h 55m

Sydney Kingsford Smith

Sat 9/5

10:20-15:18

2 stops21h 58m

$1,493

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 $1,366. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $2,003.

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 $1,476. 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 $1,956 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	19h 02m
Direct flights	None

The fastest flight from Ontario to Sydney takes 19h 02m

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 50m, 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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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.