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.

$700 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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Enter your travel dates to find the best prices.

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

17h 50m1 stop Honolulu

21:40 - 21:32SYD Sydney Kingsford Smith-ONT Ontario

18h 52m1 stop Honolulu

$1,392Multiple Airlines

Mon, 19 Oct - Sun, 15 Nov

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

17h 50m1 stop Honolulu

21:40 - 21:32SYD Sydney Kingsford Smith-ONT Ontario

18h 52m1 stop Honolulu

$1,393Multiple Airlines

Wed, 21 Oct - Tue, 3 Nov

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

18h 45m1 stop Honolulu

21:40 - 21:32SYD Sydney Kingsford Smith-ONT Ontario

18h 52m1 stop Honolulu

$1,416Multiple Airlines

Mon, 26 Oct - Tue, 10 Nov

09:00 - 19:45ONT Ontario-SYD Sydney Kingsford Smith

39h 45m1 stop Honolulu

21:40 - 21:28SYD Sydney Kingsford Smith-ONT Ontario

18h 48m1 stop Honolulu

$1,416Multiple Airlines

Tue, 26 Jan - Tue, 2 Feb

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

$1,416Multiple Airlines

Tue, 1 Sep - Tue, 8 Sep

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

17h 50m1 stop Honolulu

21:40 - 21:32SYD Sydney Kingsford Smith-ONT Ontario

18h 52m1 stop Honolulu

$1,416Multiple Airlines

Mon, 19 Oct - Sun, 8 Nov

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

$1,417Multiple Airlines

Wed, 14 Oct - Sun, 25 Oct

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

17h 50m1 stop Honolulu

21:40 - 21:32SYD Sydney Kingsford Smith-ONT Ontario

18h 52m1 stop Honolulu

$1,417Multiple Airlines

Mon, 19 Oct - Tue, 10 Nov

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

17h 50m1 stop Honolulu

21:40 - 21:32SYD Sydney Kingsford Smith-ONT Ontario

18h 52m1 stop Honolulu

$1,417Multiple Airlines

Wed, 21 Oct - Tue, 10 Nov

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

17h 50m1 stop Honolulu

21:40 - 21:32SYD Sydney Kingsford Smith-ONT Ontario

18h 52m1 stop Honolulu

$1,417Multiple Airlines

Wed, 21 Oct - Sun, 8 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

09:11 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 39m1 stop Honolulu

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

18h 25m1 stop Honolulu

$1,486Multiple Airlines

Thu, 13 Aug - Tue, 25 Aug

09:11 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 39m1 stop Honolulu

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

18h 25m1 stop Honolulu

$1,496Multiple Airlines

Tue, 11 Aug - Fri, 28 Aug

09:11 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

40h 39m1 stop Honolulu

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

18h 00m1 stop Honolulu

$1,535Multiple Airlines

Tue, 11 Aug - Tue, 18 Aug

18:39 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

19h 16m1 stop San Francisco

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

18h 52m1 stop San Francisco

$1,536United Airlines

Mon, 10 Aug - Mon, 24 Aug

18:39 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

19h 16m1 stop San Francisco

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

18h 52m1 stop San Francisco

$1,537United Airlines

Mon, 10 Aug - Mon, 24 Aug

13:50 - 06:55ONT Ontario-SYD Sydney Kingsford Smith

24h 05m1 stop San Francisco

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

18h 52m1 stop San Francisco

$1,546United Airlines

Mon, 10 Aug - Sun, 16 Aug

17:26 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

32h 24m2 stops Seattle/Tacoma Intl Honolulu

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

18h 25m1 stop Honolulu

$2,034Multiple Airlines

Thu, 13 Aug - Fri, 21 Aug

14:05 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

35h 45m2 stops Seattle/Tacoma Intl Honolulu

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

18h 25m1 stop Honolulu

$2,047Multiple Airlines

Wed, 12 Aug - Fri, 21 Aug

14:05 - 18:50ONT Ontario-SYD Sydney Kingsford Smith

35h 45m2 stops Seattle/Tacoma Intl Honolulu

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

18h 00m1 stop Honolulu

$2,047Multiple Airlines

Wed, 12 Aug - Sat, 15 Aug

00:45 - 10:45ONT Ontario-SYD Sydney Kingsford Smith

41h 00m1 stop Taipei City Taiwan Taoyuan Intl

22:10 - 18:40SYD Sydney Kingsford Smith-ONT Ontario

37h 30m1 stop Taipei City Taiwan Taoyuan Intl

$3,915China Airlines

Tue, 11 Aug - Fri, 14 Aug

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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

1 Nov

ONT06:00Ontario

31h 35m

2 stops

SYD08:35Sydney Kingsford Smith

11 Nov

SYD07:30Sydney Kingsford Smith

29h 31m

2 stops

ONT18:01Ontario

$1,564

Air New Zealand

16 Aug

ONT19:13Ontario

20h 32m

2 stops

SYD08:45Sydney Kingsford Smith

16 Sept

SYD09:55Sydney Kingsford Smith

27h 06m

2 stops

ONT20:01Ontario

$1,607

Air New Zealand

18 Aug

ONT06:08Ontario

33h 37m

2 stops

SYD08:45Sydney Kingsford Smith

2 Sept

SYD09:55Sydney Kingsford Smith

25h 21m

2 stops

ONT18:16Ontario

$1,677

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets

United Airlines

27 Sept

ONT18:32Ontario

19h 23m

1 stop

SYD06:55Sydney Kingsford Smith

12 Oct

SYD11:20Sydney Kingsford Smith

18h 58m

1 stop

ONT12:18Ontario

$1,532

United Airlines

10 Aug

ONT18:39Ontario

19h 16m

1 stop

SYD06:55Sydney Kingsford Smith

24 Aug

SYD10:20Sydney Kingsford Smith

18h 52m

1 stop

ONT12:12Ontario

$1,536

United Airlines

10 Aug

ONT18:39Ontario

19h 16m

1 stop

SYD06:55Sydney Kingsford Smith

24 Aug

SYD10:20Sydney Kingsford Smith

18h 52m

1 stop

ONT12:12Ontario

$1,537

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 19/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 15/11

21:40-21:32

1 stop18h 52m

$1,392

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 21/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 3/11

21:40-21:32

1 stop18h 52m

$1,393

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 26/10

07:00-19:45

1 stop18h 45m

Sydney Kingsford Smith

Tue 10/11

21:40-21:32

1 stop18h 52m

$1,416

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 26/1

09:00-19:45

1 stop39h 45m

Sydney Kingsford Smith

Tue 2/2

21:40-21:28

1 stop18h 48m

$1,416

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 1/9

09:31-18:50

1 stop40h 19m

Sydney Kingsford Smith

Tue 8/9

20:45-22:10

1 stop18h 25m

$1,416

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 19/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 8/11

21:40-21:32

1 stop18h 52m

$1,416

Fastest return journey

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 14/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 25/10

21:40-21:29

1 stop17h 49m

$1,417

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 19/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 10/11

21:40-21:32

1 stop18h 52m

$1,417

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 21/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 10/11

21:40-21:32

1 stop18h 52m

$1,417

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 21/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 8/11

21:40-21:32

1 stop18h 52m

$1,417

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 $1,408. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,611.

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	17h 50m
Direct flights	None

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.