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 46% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 7 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.

$699 Cheap Flights from Ontario to Sydney in 2026

Find the cheapest flights from Ontario to Sydney

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One-way

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Cheap return flights

Enter your travel dates to find the best prices.

07:00 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

21:40 - 21:29SYD Sydney Kingsford Smith-ONT Ontario

17h 49m1 stop Honolulu

$1,388Multiple Airlines

Wed, 21 Oct - Sun, 25 Oct

07:00 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

20:45 - 21:29SYD Sydney Kingsford Smith-ONT Ontario

18h 44m1 stop Honolulu

$1,388Multiple Airlines

Wed, 14 Oct - Sun, 18 Oct

07:00 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

21:40 - 21:29SYD Sydney Kingsford Smith-ONT Ontario

17h 49m1 stop Honolulu

$1,398Multiple Airlines

Wed, 21 Oct - Tue, 27 Oct

07:00 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

21:40 - 21:29SYD Sydney Kingsford Smith-ONT Ontario

17h 49m1 stop Honolulu

$1,407Multiple Airlines

Wed, 14 Oct - Tue, 27 Oct

07:00 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

21:40 - 21:29SYD Sydney Kingsford Smith-ONT Ontario

17h 49m1 stop Honolulu

$1,407Multiple Airlines

Wed, 21 Oct - Tue, 27 Oct

09:31 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 19m1 stop Honolulu

20:45 - 22:10SYD Sydney Kingsford Smith-ONT Ontario

18h 25m1 stop Honolulu

$1,412Multiple Airlines

Tue, 8 Sep - Tue, 29 Sep

09:31 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 19m1 stop Honolulu

20:45 - 22:10SYD Sydney Kingsford Smith-ONT Ontario

18h 25m1 stop Honolulu

$1,412Multiple Airlines

Sun, 20 Sep - Tue, 29 Sep

07:00 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

21:40 - 21:29SYD Sydney Kingsford Smith-ONT Ontario

17h 49m1 stop Honolulu

$1,412Multiple Airlines

Wed, 14 Oct - Tue, 27 Oct

09:31 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 19m1 stop Honolulu

20:45 - 22:10SYD Sydney Kingsford Smith-ONT Ontario

18h 25m1 stop Honolulu

$1,412Multiple Airlines

Tue, 22 Sep - Tue, 29 Sep

09:52 - 06:50ONT Ontario-SYD Sydney Kingsford Smith

27h 58m2 stops Salt Lake City Los Angeles Los Angeles

09:15 - 23:47SYD Sydney Kingsford Smith-ONT Ontario

31h 32m2 stops Los Angeles Los Angeles Salt Lake City

$1,478Delta

Wed, 16 Sep - Wed, 23 Sep

Cheap last-minute flights

Enter your travel dates to find the best prices.

09:31 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 19m1 stop Honolulu

20:45 - 22:10SYD Sydney Kingsford Smith-ONT Ontario

18h 25m1 stop Honolulu

$1,495Multiple Airlines

Fri, 21 Aug - Sun, 6 Sep

19:13 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

18h 42m1 stop San Francisco

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

18h 52m1 stop San Francisco

$1,533United Airlines

Sun, 23 Aug - Mon, 7 Sep

19:13 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

18h 42m1 stop San Francisco

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

18h 52m1 stop San Francisco

$1,537United Airlines

Sun, 23 Aug - Mon, 7 Sep

19:13 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

18h 42m1 stop San Francisco

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

18h 52m1 stop San Francisco

$1,540United Airlines

Sun, 23 Aug - Sun, 30 Aug

19:13 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

18h 42m1 stop San Francisco

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

18h 52m1 stop San Francisco

$1,540United Airlines

Sun, 23 Aug - Mon, 7 Sep

09:31 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 19m1 stop Honolulu

20:45 - 22:10SYD Sydney Kingsford Smith-ONT Ontario

18h 25m1 stop Honolulu

$1,545Multiple Airlines

Thu, 20 Aug - Thu, 3 Sep

09:31 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 19m1 stop Honolulu

20:45 - 22:10SYD Sydney Kingsford Smith-ONT Ontario

18h 25m1 stop Honolulu

$1,545Multiple Airlines

Fri, 21 Aug - Fri, 28 Aug

05:00 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

32h 55m2 stops Denver Intl San Francisco

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

18h 52m1 stop San Francisco

$1,547United Airlines

Sun, 23 Aug - Sun, 30 Aug

09:31 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 19m1 stop Honolulu

20:45 - 22:10SYD Sydney Kingsford Smith-ONT Ontario

18h 25m1 stop Honolulu

$1,564Multiple Airlines

Fri, 21 Aug - Fri, 28 Aug

05:00 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

32h 55m2 stops Denver Intl San Francisco

10:20 - 12:50SYD Sydney Kingsford Smith-ONT Ontario

43h 30m2 stops San Francisco Denver Intl

$1,567United Airlines

Sun, 23 Aug - Sun, 30 Aug

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United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

28 Sept

ONT16:03Ontario

21h 52m

1 stop

SYD06:55Sydney Kingsford Smith

13 Oct

SYD11:20Sydney Kingsford Smith

17h 03m

1 stop

ONT10:23Ontario

$1,531

United Airlines

30 Sept

ONT13:52Ontario

24h 08m

2 stops

SYD07:00Sydney Kingsford Smith

7 Oct

SYD11:20Sydney Kingsford Smith

17h 03m

1 stop

ONT10:23Ontario

$1,533

United Airlines

7 Sept

ONT19:13Ontario

18h 42m

1 stop

SYD06:55Sydney Kingsford Smith

20 Sept

SYD10:20Sydney Kingsford Smith

26h 41m

1 stop

ONT20:01Ontario

$1,540

Lufthansa flights from Ontario to Sydney

Our best Lufthansa deals on Ontario to Sydney flight tickets

Lufthansa

30 Aug

ONT19:13Ontario

18h 42m

1 stop

SYD06:55Sydney Kingsford Smith

15 Sept

SYD10:20Sydney Kingsford Smith

26h 41m

1 stop

ONT20:01Ontario

$1,530

Lufthansa

30 Aug

ONT19:13Ontario

18h 42m

1 stop

SYD06:55Sydney Kingsford Smith

15 Sept

SYD10:20Sydney Kingsford Smith

26h 41m

1 stop

ONT20:01Ontario

$1,534

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 21/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 25/10

21:40-21:29

1 stop17h 49m

$1,388

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 14/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 18/10

20:45-21:29

1 stop18h 44m

$1,388

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 21/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 27/10

21:40-21:29

1 stop17h 49m

$1,398

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 14/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 27/10

21:40-21:29

1 stop17h 49m

$1,407

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 21/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 27/10

21:40-21:29

1 stop17h 49m

$1,407

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 8/9

09:31-18:50

1 stop40h 19m

Sydney Kingsford Smith

Tue 29/9

20:45-22:10

1 stop18h 25m

$1,412

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Sun 20/9

09:31-18:50

1 stop40h 19m

Sydney Kingsford Smith

Tue 29/9

20:45-22:10

1 stop18h 25m

$1,412

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 14/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 27/10

21:40-21:29

1 stop17h 49m

$1,412

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 22/9

09:31-18:50

1 stop40h 19m

Sydney Kingsford Smith

Tue 29/9

20:45-22:10

1 stop18h 25m

$1,412

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 16/9

09:52-06:50

2 stops27h 58m

Sydney Kingsford Smith

Wed 23/9

09:15-23:47

2 stops31h 32m

$1,478

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 $1,398. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,612.

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	$699
Fastest flight time	17h 50m
Direct flights	None

The best one-way flight to Sydney from Ontario in the past 72 hours is $699. The best return flight deal from Ontario to Sydney found on momondo in the last 72 hours is $1,388.

The fastest flight from Ontario to Sydney takes 17h 50m

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 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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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.