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

United Airlines and Delta are the most popular carriers operating from Ontario to Australia

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 51% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 10 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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.

$711 Cheap Flights from Ontario to Australia in 2026

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Find the cheapest flights from Ontario to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 06:50

ONT

SYD

31h 50m

2 stops

09:15 - 16:25

SYD

ONT

24h 10m

2 stops

$1,596Delta

Wed, 29 Apr - Wed, 6 May

09:11 - 18:50

ONT

SYD

40h 39m

1 stop

20:45 - 21:45

SYD

ONT

18h 00m

1 stop

$1,597Multiple Airlines

Tue, 21 Jul - Sun, 9 Aug

07:20 - 18:50

ONT

SYD

18h 30m

1 stop

20:45 - 21:20

SYD

ONT

17h 35m

1 stop

$1,601Multiple Airlines

Fri, 28 Aug - Sun, 13 Sep

07:20 - 18:50

ONT

SYD

18h 30m

1 stop

20:45 - 21:20

SYD

ONT

17h 35m

1 stop

$1,603Multiple Airlines

Fri, 28 Aug - Sat, 12 Sep

07:20 - 18:50

ONT

SYD

18h 30m

1 stop

20:45 - 21:20

SYD

ONT

17h 35m

1 stop

$1,609Multiple Airlines

Fri, 28 Aug - Sat, 12 Sep

09:40 - 18:50

ONT

SYD

40h 10m

1 stop

20:45 - 22:17

SYD

ONT

18h 32m

1 stop

$1,635Multiple Airlines

Thu, 21 May - Sun, 31 May

18:49 - 06:55

ONT

SYD

19h 06m

1 stop

10:20 - 12:22

SYD

ONT

19h 02m

1 stop

$1,643United Airlines

Sun, 26 Apr - Sun, 10 May

18:49 - 06:55

ONT

SYD

19h 06m

1 stop

10:20 - 09:41

SYD

ONT

16h 21m

1 stop

$1,645United Airlines

Sun, 26 Apr - Sun, 10 May

07:20 - 18:50

ONT

SYD

18h 30m

1 stop

20:45 - 21:20

SYD

ONT

17h 35m

1 stop

$1,649Multiple Airlines

Mon, 24 Aug - Tue, 1 Sep

18:49 - 06:55

ONT

SYD

19h 06m

1 stop

10:20 - 12:22

SYD

ONT

19h 02m

1 stop

$1,654United Airlines

Sun, 26 Apr - Sun, 10 May

United Airlines flights from Ontario to Australia

Our best United Airlines deals on Ontario to Australia flight tickets

United Airlines

26 Apr

ONT18:49Ontario

19h 06m

1 stop

SYD06:55Sydney Kingsford Smith

10 May

SYD10:20Sydney Kingsford Smith

19h 02m

1 stop

ONT12:22Ontario

$1,643

United Airlines

26 Apr

ONT18:49Ontario

19h 06m

1 stop

SYD06:55Sydney Kingsford Smith

10 May

SYD10:20Sydney Kingsford Smith

16h 21m

1 stop

ONT09:41Ontario

$1,645

United Airlines

26 Apr

ONT18:49Ontario

19h 06m

1 stop

SYD06:55Sydney Kingsford Smith

10 May

SYD10:20Sydney Kingsford Smith

19h 02m

1 stop

ONT12:22Ontario

$1,654

Delta flights from Ontario to Australia

Our best Delta deals on Ontario to Australia flight tickets

Delta

29 Apr

ONT06:00Ontario

31h 50m

2 stops

SYD06:50Sydney Kingsford Smith

6 May

SYD09:15Sydney Kingsford Smith

24h 10m

2 stops

ONT16:25Ontario

$1,596

Delta

30 Aug

ONT09:55Ontario

27h 55m

2 stops

SYD06:50Sydney Kingsford Smith

13 Sept

SYD09:15Sydney Kingsford Smith

23h 59m

2 stops

ONT16:14Ontario

$1,952

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 29/4

06:00-06:50

2 stops31h 50m

Sydney Kingsford Smith

Wed 6/5

09:15-16:25

2 stops24h 10m

$1,596

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 21/7

09:11-18:50

1 stop40h 39m

Sydney Kingsford Smith

Sun 9/8

20:45-21:45

1 stop18h 00m

$1,597

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 28/8

07:20-18:50

1 stop18h 30m

Sydney Kingsford Smith

Sun 13/9

20:45-21:20

1 stop17h 35m

$1,601

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 28/8

07:20-18:50

1 stop18h 30m

Sydney Kingsford Smith

Sat 12/9

20:45-21:20

1 stop17h 35m

$1,603

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 28/8

07:20-18:50

1 stop18h 30m

Sydney Kingsford Smith

Sat 12/9

20:45-21:20

1 stop17h 35m

$1,609

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 21/5

09:40-18:50

1 stop40h 10m

Sydney Kingsford Smith

Sun 31/5

20:45-22:17

1 stop18h 32m

$1,635

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 26/4

18:49-06:55

1 stop19h 06m

Sydney Kingsford Smith

Sun 10/5

10:20-12:22

1 stop19h 02m

$1,643

Fastest return journey

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 26/4

18:49-06:55

1 stop19h 06m

Sydney Kingsford Smith

Sun 10/5

10:20-09:41

1 stop16h 21m

$1,645

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 24/8

07:20-18:50

1 stop18h 30m

Sydney Kingsford Smith

Tue 1/9

20:45-21:20

1 stop17h 35m

$1,649

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 26/4

18:49-06:55

1 stop19h 06m

Sydney Kingsford Smith

Sun 10/5

10:20-12:22

1 stop19h 02m

$1,654

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

Fastest flight time	18h 17m
Direct flights	None

The fastest flight from Ontario to Australia takes 18h 17m

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.