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

United Airlines, Hawaiian Airlines, and Alaska Airlines are the most popular carriers 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 41% 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.

$688 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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07:50 - 19:45ONT-SYD

40h 55m1 stop

21:40 - 20:23SYD-ONT

17h 43m1 stop

$1,387Alaska Airlines

Find Deal

Tue, 25 Nov - Tue, 2 Dec

09:47 - 19:45ONT-SYD

38h 58m1 stop

21:40 - 17:14SYD-ONT

38h 34m1 stop

$1,413Alaska Airlines

Find Deal

Tue, 11 Nov - Sat, 15 Nov

13:53 - 06:20ONT-SYD

21h 27m1 stop

12:10 - 12:17SYD-ONT

18h 07m1 stop

$1,442United Airlines

Find Deal

Wed, 11 Feb - Tue, 10 Mar

06:05 - 07:00ONT-SYD

29h 55m1 stop

12:10 - 12:37SYD-ONT

19h 27m1 stop

$1,446United Airlines

Find Deal

Wed, 12 Nov - Thu, 27 Nov

06:05 - 07:00ONT-SYD

29h 55m1 stop

12:10 - 20:44SYD-ONT

27h 34m2 stops

$1,448United Airlines

Find Deal

Sun, 9 Nov - Sun, 16 Nov

18:39 - 09:15ONT-SYD

19h 36m1 stop

11:50 - 21:59SYD-ONT

29h 09m1 stop

$1,451United Airlines

Find Deal

Fri, 6 Feb - Sat, 21 Feb

05:40 - 09:15ONT-SYD

33h 35m2 stops

11:50 - 20:45SYD-ONT

26h 55m2 stops

$1,453United Airlines

Find Deal

Mon, 16 Mar - Thu, 19 Mar

05:05 - 06:20ONT-SYD

30h 15m2 stops

12:10 - 12:47SYD-ONT

19h 37m1 stop

$1,457United Airlines

Find Deal

Fri, 6 Feb - Sat, 21 Feb

18:38 - 09:15ONT-SYD

19h 37m1 stop

12:10 - 12:37SYD-ONT

19h 27m1 stop

$1,493Lufthansa

Find Deal

Thu, 13 Nov - Mon, 17 Nov

09:50 - 19:45ONT-SYD

39h 55m1 stop

21:40 - 21:55SYD-ONT

18h 15m1 stop

$1,631Alaska Airlines

Find Deal

Wed, 18 Mar - Sun, 29 Mar

Alaska Airlines flights from Ontario to Sydney

Our best Alaska Airlines deals on Ontario to Sydney flight tickets

Alaska Airlines

25 Nov

ONT07:50Ontario

40h 55m

1 stop

SYD19:45Sydney Kingsford Smith

2 Dec

SYD21:40Sydney Kingsford Smith

17h 43m

1 stop

ONT20:23Ontario

$1,387

Find similar

Alaska Airlines

11 Nov

ONT09:47Ontario

38h 58m

1 stop

SYD19:45Sydney Kingsford Smith

15 Nov

SYD21:40Sydney Kingsford Smith

38h 34m

1 stop

ONT17:14Ontario

$1,413

Find similar

Alaska Airlines

18 Mar

ONT09:50Ontario

39h 55m

1 stop

SYD19:45Sydney Kingsford Smith

29 Mar

SYD21:40Sydney Kingsford Smith

18h 15m

1 stop

ONT21:55Ontario

$1,631

Find similar

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

2 Nov

ONT18:38Ontario

19h 37m

1 stop

SYD09:15Sydney Kingsford Smith

16 Nov

SYD12:10Sydney Kingsford Smith

19h 27m

1 stop

ONT12:37Ontario

$1,430

Find similar

United Airlines

2 Nov

ONT18:38Ontario

19h 37m

1 stop

SYD09:15Sydney Kingsford Smith

16 Nov

SYD12:10Sydney Kingsford Smith

19h 27m

1 stop

ONT12:37Ontario

$1,433

Find similar

United Airlines

2 Nov

ONT18:38Ontario

19h 37m

1 stop

SYD09:15Sydney Kingsford Smith

16 Nov

SYD12:10Sydney Kingsford Smith

19h 27m

1 stop

ONT12:37Ontario

$1,442

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 25/11

07:50-19:45

1 stop40h 55m

Sydney Kingsford Smith

Tue 2/12

21:40-20:23

1 stop17h 43m

$1,387

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 11/11

09:47-19:45

1 stop38h 58m

Sydney Kingsford Smith

Sat 15/11

21:40-17:14

1 stop38h 34m

$1,413

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 11/2

13:53-06:20

1 stop21h 27m

Sydney Kingsford Smith

Tue 10/3

12:10-12:17

1 stop18h 07m

$1,442

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 12/11

06:05-07:00

1 stop29h 55m

Sydney Kingsford Smith

Thu 27/11

12:10-12:37

1 stop19h 27m

$1,446

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 9/11

06:05-07:00

1 stop29h 55m

Sydney Kingsford Smith

Sun 16/11

12:10-20:44

2 stops27h 34m

$1,448

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 6/2

18:39-09:15

1 stop19h 36m

Sydney Kingsford Smith

Sat 21/2

11:50-21:59

1 stop29h 09m

$1,451

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 16/3

05:40-09:15

2 stops33h 35m

Sydney Kingsford Smith

Thu 19/3

11:50-20:45

2 stops26h 55m

$1,453

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 6/2

05:05-06:20

2 stops30h 15m

Sydney Kingsford Smith

Sat 21/2

12:10-12:47

1 stop19h 37m

$1,457

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 13/11

18:38-09:15

1 stop19h 37m

Sydney Kingsford Smith

Mon 17/11

12:10-12:37

1 stop19h 27m

$1,493

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 18/3

09:50-19:45

1 stop39h 55m

Sydney Kingsford Smith

Sun 29/3

21:40-21:55

1 stop18h 15m

$1,631

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 $1,373. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,990.

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 $1,467. 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 $1,945 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

Direct flights	None

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

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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 25m, 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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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.