Which airlines fly to Australia?

Qantas Airways, Fiji Airways and United Airlines are the top three most popular airlines that fly to Australia 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 Australia. Keep in mind that there are 7 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Australia?

United Airlines is the most popular carrier operating from Ontario to Australia

When did momondo last update prices for flights from Ontario Airport to Australia?

Prices for flights from Ontario Airport to Australia refresh daily.

How old do you have to be to fly from Ontario Airport to Australia?

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 Australia.

What documentation or ID do you need to fly to Australia?

The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$699 Cheap Flights from Ontario to Australia in 2026

Find the cheapest flights from Ontario to Australia

Return

One-way

Last minute

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

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

$1,388Multiple Airlines

Wed, 21 Oct - Sun, 25 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 - 22:25ONT Ontario-BNE Brisbane

22h 25m2 stops Honolulu Sydney Kingsford Smith

16:50 - 22:42BNE Brisbane-ONT Ontario

22h 52m2 stops Sydney Kingsford Smith Honolulu

$1,405Multiple Airlines

Wed, 28 Oct - Sun, 1 Nov

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

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

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

17h 49m1 stop Honolulu

$1,412Multiple Airlines

Tue, 22 Sep - 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

09:31 - 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

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

Cheap last-minute flights

Enter your travel dates to find the best prices.

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 - 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 - 20:01SYD Sydney Kingsford Smith-ONT Ontario

26h 41m1 stop San Francisco

$1,541United Airlines

Sun, 23 Aug - Sun, 6 Sep

19:13 - 06:30ONT Ontario-BNE Brisbane

18h 17m1 stop San Francisco

10:30 - 12:12BNE Brisbane-ONT Ontario

18h 42m1 stop San Francisco

$1,543United Airlines

Mon, 24 Aug - Sun, 6 Sep

19:13 - 06:30ONT Ontario-BNE Brisbane

18h 17m1 stop San Francisco

10:30 - 12:12BNE Brisbane-ONT Ontario

18h 42m1 stop San Francisco

$1,544Lufthansa

Mon, 24 Aug - Sun, 6 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

19:13 - 08:15ONT Ontario-MEL Melbourne

20h 02m1 stop San Francisco

10:55 - 12:12MEL Melbourne-ONT Ontario

18h 17m1 stop San Francisco

$1,560United Airlines

Mon, 24 Aug - Sun, 6 Sep

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United Airlines flights from Ontario to Australia

Our best United Airlines deals on Ontario to Australia 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

7 Sept

ONT19:13Ontario

18h 17m

1 stop

BNE06:30Brisbane

23 Sept

BNE10:30Brisbane

18h 42m

1 stop

ONT12:12Ontario

$1,538

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 Australia

Our best Lufthansa deals on Ontario to Australia 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

24 Aug

ONT19:13Ontario

18h 17m

1 stop

BNE06:30Brisbane

6 Sept

BNE10:30Brisbane

18h 42m

1 stop

ONT12:12Ontario

$1,544

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

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

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 21/10

07:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Tue 27/10

21:40-21:29

1 stop17h 49m

$1,398

OntarioBrisbane

ONT Ontario - BNE Brisbane

ONTBNE

Ontario

Wed 28/10

07:00-22:25

2 stops22h 25m

Brisbane

Sun 1/11

16:50-22:42

2 stops22h 52m

$1,405

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 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 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

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

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

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 Australia

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

Can stopping save me money on Ontario to Australia flights?

You could potentially save up to 29% on your flight if you consider stops on a Ontario to Australia flight.

Cheap Ontario to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Australia

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

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

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

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

Search flight deals

Frequently asked questions about flying from Ontario to Australia

When did momondo last update prices for flights from Ontario Airport to Australia?
Prices for flights from Ontario Airport to Australia refresh daily.
How old do you have to be to fly from Ontario Airport to Australia?
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 Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Australia?

Finding the right flight to Australia from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

Can I find flights from Ontario to Australia with flexible booking policies on momondo?

Yes. All flights to Australia from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Australia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Australia.

I’m not ready to book a flight from Ontario to Australia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.