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 52% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 5 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 is the most popular carrier 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.

$817 Cheap Flights from Ontario to Sydney in 2026/27

Find the cheapest flights from Ontario to Sydney

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One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

18:37 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

19h 43m1 stop San Francisco

10:20 - 15:27SYD Sydney Kingsford Smith-ONT Ontario

22h 07m1 stop San Francisco

$1,642United Airlines

Mon, 15 Feb - Mon, 5 Apr

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,673Air New Zealand

Mon, 23 Nov - Fri, 27 Nov

16:03 - 06:20ONT Ontario-SYD Sydney Kingsford Smith

20h 17m1 stop San Francisco

10:20 - 12:20SYD Sydney Kingsford Smith-ONT Ontario

19h 00m1 stop San Francisco

$1,678Air New Zealand

Wed, 17 Mar - Wed, 7 Apr

09:45 - 08:35ONT Ontario-SYD Sydney Kingsford Smith

27h 50m2 stops San Francisco Auckland Intl

11:50 - 18:03SYD Sydney Kingsford Smith-ONT Ontario

25h 13m2 stops Auckland Intl San Francisco

$1,684Air New Zealand

Tue, 19 Jan - Tue, 2 Feb

13:35 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

24h 45m1 stop San Francisco

11:50 - 09:38SYD Sydney Kingsford Smith-ONT Ontario

16h 48m1 stop San Francisco

$1,708Air New Zealand

Mon, 30 Nov - Fri, 4 Dec

16:03 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

21h 52m1 stop San Francisco

10:20 - 09:57SYD Sydney Kingsford Smith-ONT Ontario

16h 37m1 stop San Francisco

$1,713United Airlines

Mon, 12 Apr - Tue, 20 Apr

14:00 - 06:20ONT Ontario-SYD Sydney Kingsford Smith

21h 20m1 stop San Francisco

11:50 - 10:22SYD Sydney Kingsford Smith-ONT Ontario

17h 32m1 stop San Francisco

$1,715United Airlines

Wed, 27 Jan - Sat, 13 Feb

18:40 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

19h 40m1 stop San Francisco

09:15 - 21:00SYD Sydney Kingsford Smith-ONT Ontario

30h 45m2 stops Houston George Bush Intcntl Denver Intl

$1,721United Airlines

Mon, 7 Dec - Wed, 23 Dec

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

09:15 - 21:59SYD Sydney Kingsford Smith-ONT Ontario

31h 44m1 stop Houston George Bush Intcntl

$1,726United Airlines

Tue, 1 Dec - Wed, 16 Dec

18:53 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

19h 02m1 stop San Francisco

10:20 - 09:57SYD Sydney Kingsford Smith-ONT Ontario

16h 37m1 stop San Francisco

$1,735Air New Zealand

Wed, 21 Apr - Wed, 21 Jul

Cheap last-minute flights

Enter your travel dates to find the best prices.

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 17:56SYD Sydney Kingsford Smith-ONT Ontario

25h 06m1 stop San Francisco

$1,680Air New Zealand

Tue, 10 Nov - Mon, 16 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,713United Airlines

Wed, 11 Nov - Wed, 18 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,715United Airlines

Tue, 10 Nov - Sun, 22 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 20:51SYD Sydney Kingsford Smith-ONT Ontario

28h 01m2 stops San Francisco Denver Intl

$1,721United Airlines

Tue, 10 Nov - Mon, 16 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,744United Airlines

Thu, 12 Nov - Wed, 25 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,751United Airlines

Thu, 12 Nov - Wed, 25 Nov

13:35 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

24h 45m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,754Air New Zealand

Thu, 12 Nov - Tue, 17 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,756Lufthansa

Thu, 12 Nov - Wed, 25 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,760United Airlines

Thu, 12 Nov - Wed, 25 Nov

16:17 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

22h 03m1 stop San Francisco

11:50 - 12:29SYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,770United Airlines

Thu, 12 Nov - Wed, 25 Nov

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Air New Zealand flights from Ontario to Sydney

Our best Air New Zealand deals on Ontario to Sydney flight tickets

Air New Zealand

23 Nov

ONT16:17Ontario

22h 03m

1 stop

SYD09:20Sydney Kingsford Smith

27 Nov

SYD11:50Sydney Kingsford Smith

19h 39m

1 stop

ONT12:29Ontario

$1,673

Air New Zealand

17 Mar

ONT16:03Ontario

20h 17m

1 stop

SYD06:20Sydney Kingsford Smith

7 Apr

SYD10:20Sydney Kingsford Smith

19h 00m

1 stop

ONT12:20Ontario

$1,678

Air New Zealand

10 Nov

ONT16:17Ontario

22h 03m

1 stop

SYD09:20Sydney Kingsford Smith

16 Nov

SYD11:50Sydney Kingsford Smith

25h 06m

1 stop

ONT17:56Ontario

$1,680

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

15 Feb

ONT18:37Ontario

19h 43m

1 stop

SYD09:20Sydney Kingsford Smith

5 Apr

SYD10:20Sydney Kingsford Smith

22h 07m

1 stop

ONT15:27Ontario

$1,642

United Airlines

12 Apr

ONT16:03Ontario

21h 52m

1 stop

SYD06:55Sydney Kingsford Smith

20 Apr

SYD10:20Sydney Kingsford Smith

16h 37m

1 stop

ONT09:57Ontario

$1,713

United Airlines

10 Nov

ONT16:17Ontario

22h 03m

1 stop

SYD09:20Sydney Kingsford Smith

22 Nov

SYD11:50Sydney Kingsford Smith

19h 39m

1 stop

ONT12:29Ontario

$1,715

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 15/2

18:37-09:20

1 stop19h 43m

Sydney Kingsford Smith

Mon 5/4

10:20-15:27

1 stop22h 07m

$1,642

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 23/11

16:17-09:20

1 stop22h 03m

Sydney Kingsford Smith

Fri 27/11

11:50-12:29

1 stop19h 39m

$1,673

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 17/3

16:03-06:20

1 stop20h 17m

Sydney Kingsford Smith

Wed 7/4

10:20-12:20

1 stop19h 00m

$1,678

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 19/1

09:45-08:35

2 stops27h 50m

Sydney Kingsford Smith

Tue 2/2

11:50-18:03

2 stops25h 13m

$1,684

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 30/11

13:35-09:20

1 stop24h 45m

Sydney Kingsford Smith

Fri 4/12

11:50-09:38

1 stop16h 48m

$1,708

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 12/4

16:03-06:55

1 stop21h 52m

Sydney Kingsford Smith

Tue 20/4

10:20-09:57

1 stop16h 37m

$1,713

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 27/1

14:00-06:20

1 stop21h 20m

Sydney Kingsford Smith

Sat 13/2

11:50-10:22

1 stop17h 32m

$1,715

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 7/12

18:40-09:20

1 stop19h 40m

Sydney Kingsford Smith

Wed 23/12

09:15-21:00

2 stops30h 45m

$1,721

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 1/12

16:17-09:20

1 stop22h 03m

Sydney Kingsford Smith

Wed 16/12

09:15-21:59

1 stop31h 44m

$1,726

Fastest return journey

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 21/4

18:53-06:55

1 stop19h 02m

Sydney Kingsford Smith

Wed 21/7

10:20-09:57

1 stop16h 37m

$1,735

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 $1,453. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,570.

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

Best price found	$817
Fastest flight time	19h 02m
Direct flights	None

The best one-way flight to Sydney from Ontario in the past 72 hours is $817. The best return flight deal from Ontario to Sydney found on momondo in the last 72 hours is $1,642.

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

Frequently asked questions about flying from Ontario to Sydney

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 02m, 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.