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 6 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.

$887 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.

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

$1,590United Airlines

Sun, 1 Nov - Wed, 11 Nov

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

19h 43m1 stop San Francisco

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

25h 06m1 stop San Francisco

$1,591United Airlines

Mon, 9 Nov - Mon, 23 Nov

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

22h 03m1 stop San Francisco

11:20 - 15:33SYD Sydney Kingsford Smith-ONT Ontario

23h 13m2 stops Los Angeles San Francisco

$1,597United Airlines

Sun, 15 Nov - Tue, 24 Nov

06:00 - 07:00ONT Ontario-SYD Sydney Kingsford Smith

30h 00m1 stop Houston George Bush Intcntl

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

28h 01m2 stops San Francisco Denver Intl

$1,599United Airlines

Mon, 9 Nov - Mon, 23 Nov

10:35 - 09:35ONT Ontario-SYD Sydney Kingsford Smith

28h 00m3 stops Las Vegas Harry Reid Intl San Francisco Vancouver Intl

11:20 - 00:24SYD Sydney Kingsford Smith-ONT Ontario

32h 04m2 stops Vancouver Intl San Francisco

$1,606Multiple Airlines

Tue, 10 Nov - Tue, 24 Nov

09:55 - 19:45ONT Ontario-SYD Sydney Kingsford Smith

38h 50m1 stop Honolulu

21:40 - 22:43SYD Sydney Kingsford Smith-ONT Ontario

20h 03m1 stop Honolulu

$1,627Multiple Airlines

Tue, 3 Nov - Sun, 15 Nov

07:00 - 19:45ONT Ontario-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

21:40 - 21:18SYD Sydney Kingsford Smith-ONT Ontario

18h 38m1 stop Honolulu

$1,644Multiple Airlines

Wed, 27 Jan - Tue, 2 Feb

10:35 - 09:35ONT Ontario-SYD Sydney Kingsford Smith

28h 00m3 stops Las Vegas Harry Reid Intl San Francisco Vancouver Intl

11:20 - 19:36SYD Sydney Kingsford Smith-ONT Ontario

27h 16m3 stops Vancouver Intl San Francisco Las Vegas Harry Reid Intl

$1,657Multiple Airlines

Tue, 10 Nov - Tue, 24 Nov

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

19h 43m1 stop San Francisco

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

19h 39m1 stop San Francisco

$1,661United Airlines

Sun, 8 Nov - Sun, 22 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

$1,663United Airlines

Mon, 2 Nov - Thu, 12 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

06:00 - 07:00ONT Ontario-SYD Sydney Kingsford Smith

31h 00m1 stop Houston George Bush Intcntl

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

19h 39m1 stop San Francisco

$1,590United Airlines

Mon, 26 Oct - Mon, 2 Nov

06:00 - 07:00ONT Ontario-SYD Sydney Kingsford Smith

31h 00m1 stop Houston George Bush Intcntl

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

19h 39m1 stop San Francisco

$1,591United Airlines

Mon, 26 Oct - Mon, 2 Nov

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

23h 03m1 stop San Francisco

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

28h 01m2 stops San Francisco Denver Intl

$1,597United Airlines

Mon, 26 Oct - Mon, 2 Nov

13:32 - 09:20ONT Ontario-SYD Sydney Kingsford Smith

25h 48m2 stops Denver Intl San Francisco

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

19h 39m1 stop San Francisco

$1,599United Airlines

Mon, 26 Oct - Mon, 2 Nov

18:32 - 07:55ONT Ontario-SYD Sydney Kingsford Smith

19h 23m1 stop San Francisco

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

19h 39m1 stop San Francisco

$1,648United Airlines

Thu, 22 Oct - Wed, 4 Nov

18:32 - 07:55ONT Ontario-SYD Sydney Kingsford Smith

19h 23m1 stop San Francisco

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

19h 39m1 stop San Francisco

$1,651United Airlines

Thu, 22 Oct - Wed, 4 Nov

18:32 - 07:55ONT Ontario-SYD Sydney Kingsford Smith

19h 23m1 stop San Francisco

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

19h 39m1 stop San Francisco

$1,653United Airlines

Thu, 22 Oct - Wed, 4 Nov

18:32 - 07:55ONT Ontario-SYD Sydney Kingsford Smith

19h 23m1 stop San Francisco

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

19h 39m1 stop San Francisco

$1,654United Airlines

Thu, 22 Oct - Wed, 4 Nov

18:32 - 07:55ONT Ontario-SYD Sydney Kingsford Smith

19h 23m1 stop San Francisco

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

19h 39m1 stop San Francisco

$1,660United Airlines

Thu, 22 Oct - Wed, 4 Nov

18:32 - 07:55ONT Ontario-SYD Sydney Kingsford Smith

19h 23m1 stop San Francisco

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

19h 39m1 stop San Francisco

$1,661United Airlines

Thu, 22 Oct - Wed, 4 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

28 Oct

ONT13:35Ontario

25h 45m

1 stop

SYD09:20Sydney Kingsford Smith

4 Nov

SYD11:50Sydney Kingsford Smith

19h 39m

1 stop

ONT12:29Ontario

$1,613

Air New Zealand

29 Nov

ONT09:25Ontario

28h 55m

1 stop

SYD09:20Sydney Kingsford Smith

4 Dec

SYD11:50Sydney Kingsford Smith

22h 45m

1 stop

ONT15:35Ontario

$1,685

Air New Zealand

2 Nov

ONT13:29Ontario

24h 51m

2 stops

SYD09:20Sydney Kingsford Smith

26 Nov

SYD09:10Sydney Kingsford Smith

29h 32m

1 stop

ONT19:42Ontario

$1,690

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

1 Nov

ONT16:17Ontario

22h 03m

1 stop

SYD09:20Sydney Kingsford Smith

11 Nov

SYD11:50Sydney Kingsford Smith

19h 39m

1 stop

ONT12:29Ontario

$1,590

United Airlines

9 Nov

ONT18:37Ontario

19h 43m

1 stop

SYD09:20Sydney Kingsford Smith

23 Nov

SYD11:50Sydney Kingsford Smith

25h 06m

1 stop

ONT17:56Ontario

$1,591

United Airlines

15 Nov

ONT16:17Ontario

22h 03m

1 stop

SYD09:20Sydney Kingsford Smith

24 Nov

SYD11:20Sydney Kingsford Smith

23h 13m

2 stops

ONT15:33Ontario

$1,597

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Sun 1/11

16:17-09:20

1 stop22h 03m

Sydney Kingsford Smith

Wed 11/11

11:50-12:29

1 stop19h 39m

$1,590

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 9/11

18:37-09:20

1 stop19h 43m

Sydney Kingsford Smith

Mon 23/11

11:50-17:56

1 stop25h 06m

$1,591

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Sun 15/11

16:17-09:20

1 stop22h 03m

Sydney Kingsford Smith

Tue 24/11

11:20-15:33

2 stops23h 13m

$1,597

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 9/11

06:00-07:00

1 stop30h 00m

Sydney Kingsford Smith

Mon 23/11

11:50-20:51

2 stops28h 01m

$1,599

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 10/11

10:35-09:35

3 stops28h 00m

Sydney Kingsford Smith

Tue 24/11

11:20-00:24

2 stops32h 04m

$1,606

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 3/11

09:55-19:45

1 stop38h 50m

Sydney Kingsford Smith

Sun 15/11

21:40-22:43

1 stop20h 03m

$1,627

Fastest return journey

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 27/1

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Tue 2/2

21:40-21:18

1 stop18h 38m

$1,644

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 10/11

10:35-09:35

3 stops28h 00m

Sydney Kingsford Smith

Tue 24/11

11:20-19:36

3 stops27h 16m

$1,657

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Sun 8/11

18:37-09:20

1 stop19h 43m

Sydney Kingsford Smith

Sun 22/11

11:50-12:29

1 stop19h 39m

$1,661

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 2/11

16:17-09:20

1 stop22h 03m

Sydney Kingsford Smith

Thu 12/11

11:50-12:29

1 stop19h 39m

$1,663

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 $1,413. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,534.

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	$887
Fastest flight time	18h 45m
Direct flights	None

The best one-way flight to Sydney from Ontario in the past 72 hours is $887. The best return flight deal from Ontario to Sydney found on momondo in the last 72 hours is $1,590.

The fastest flight from Ontario to Sydney takes 18h 45m

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 18h 45m, 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.