What 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 traveling to Australia. Keep in mind that there are 14 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 are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario Airport to Australia?

As of October 2026, there is 1 operator available to choose from for flights from Ontario Airport to Australia.

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 layovers. 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 required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$496 Cheap Flights from Ontario to Australia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Australia

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One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

9:40 pm - 9:28 pmSYD Sydney Kingsford Smith-ONT Ontario

18h 48m1 stop Honolulu

$951Multiple Airlines

Mon, Feb 1 - Sun, Feb 21

7:00 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

18h 45m1 stop Honolulu

9:40 pm - 10:43 pmSYD Sydney Kingsford Smith-ONT Ontario

20h 03m1 stop Honolulu

$982Multiple Airlines

Wed, Oct 28 - Sun, Nov 8

7:00 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

9:40 pm - 9:28 pmSYD Sydney Kingsford Smith-ONT Ontario

18h 48m1 stop Honolulu

$982Multiple Airlines

Mon, Feb 1 - Sun, Feb 28

9:00 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

39h 45m1 stop Honolulu

9:40 pm - 9:28 pmSYD Sydney Kingsford Smith-ONT Ontario

18h 48m1 stop Honolulu

$999Multiple Airlines

Sun, Feb 21 - Tue, Mar 2

9:55 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

38h 50m1 stop Honolulu

9:40 pm - 9:23 pmSYD Sydney Kingsford Smith-ONT Ontario

18h 43m1 stop Honolulu

$999Multiple Airlines

Tue, Nov 3 - Tue, Nov 24

7:00 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

18h 45m1 stop Honolulu

9:40 pm - 10:43 pmSYD Sydney Kingsford Smith-ONT Ontario

20h 03m1 stop Honolulu

$1,001Multiple Airlines

Wed, Oct 28 - Sun, Nov 8

7:00 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

9:40 pm - 9:28 pmSYD Sydney Kingsford Smith-ONT Ontario

18h 48m1 stop Honolulu

$1,001Multiple Airlines

Mon, Feb 8 - Sun, Feb 21

7:00 am - 7:45 pmONT Ontario-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

9:40 pm - 9:28 pmSYD Sydney Kingsford Smith-ONT Ontario

18h 48m1 stop Honolulu

$1,001Multiple Airlines

Mon, Feb 8 - Sun, Feb 28

4:03 pm - 7:55 amONT Ontario-SYD Sydney Kingsford Smith

21h 52m1 stop San Francisco

11:50 am - 12:29 pmSYD Sydney Kingsford Smith-ONT Ontario

19h 39m1 stop San Francisco

$1,105United Airlines

Sun, Oct 18 - Mon, Nov 2

4:03 pm - 9:15 amONT Ontario-MEL Melbourne

23h 12m1 stop San Francisco

12:45 pm - 12:29 pmMEL Melbourne-ONT Ontario

18h 44m1 stop San Francisco

$1,118United Airlines

Mon, Oct 19 - Mon, Nov 2

Cheap last minute flights

Enter your travel dates to find the best prices.

4:03 pm - 9:15 amONT Ontario-MEL Melbourne

23h 12m1 stop San Francisco

11:55 am - 12:18 pmMEL Melbourne-ONT Ontario

18h 23m1 stop San Francisco

$1,131United Airlines

Wed, Oct 7 - Mon, Oct 12

9:25 am - 7:55 amONT Ontario-SYD Sydney Kingsford Smith

28h 30m1 stop San Francisco

11:20 am - 12:18 pmSYD Sydney Kingsford Smith-ONT Ontario

18h 58m1 stop San Francisco

$1,139United Airlines

Mon, Oct 5 - Mon, Oct 12

9:25 am - 7:55 amONT Ontario-SYD Sydney Kingsford Smith

28h 30m1 stop San Francisco

11:20 am - 8:58 pmSYD Sydney Kingsford Smith-ONT Ontario

27h 38m2 stops San Francisco Denver Intl

$1,143United Airlines

Mon, Oct 5 - Mon, Oct 12

4:03 pm - 9:15 amONT Ontario-MEL Melbourne

23h 12m1 stop San Francisco

11:55 am - 12:18 pmMEL Melbourne-ONT Ontario

18h 23m1 stop San Francisco

$1,182United Airlines

Mon, Oct 5 - Thu, Oct 15

5:00 am - 7:55 amONT Ontario-SYD Sydney Kingsford Smith

32h 55m2 stops Denver Intl San Francisco

11:20 am - 3:22 pmSYD Sydney Kingsford Smith-ONT Ontario

22h 02m1 stop San Francisco

$1,187United Airlines

Tue, Oct 6 - Sun, Oct 11

5:00 am - 7:55 amONT Ontario-SYD Sydney Kingsford Smith

32h 55m2 stops Denver Intl San Francisco

11:20 am - 8:58 pmSYD Sydney Kingsford Smith-ONT Ontario

27h 38m2 stops San Francisco Denver Intl

$1,187United Airlines

Tue, Oct 6 - Sun, Oct 11

9:25 am - 7:55 amONT Ontario-SYD Sydney Kingsford Smith

28h 30m1 stop San Francisco

11:20 am - 3:22 pmSYD Sydney Kingsford Smith-ONT Ontario

22h 02m1 stop San Francisco

$1,189United Airlines

Mon, Oct 5 - Sat, Oct 10

9:25 am - 7:55 amONT Ontario-SYD Sydney Kingsford Smith

28h 30m1 stop San Francisco

11:20 am - 3:22 pmSYD Sydney Kingsford Smith-ONT Ontario

22h 02m1 stop San Francisco

$1,189United Airlines

Mon, Oct 5 - Sun, Oct 11

7:00 am - 6:50 pmONT Ontario-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

9:40 pm - 9:29 pmSYD Sydney Kingsford Smith-ONT Ontario

17h 49m1 stop Honolulu

$1,242Multiple Airlines

Wed, Oct 7 - Sat, Oct 31

7:00 am - 11:35 pmONT Ontario-MEL Melbourne

22h 35m2 stops Honolulu Sydney Kingsford Smith

9:15 am - 9:29 pmMEL Melbourne-ONT Ontario

30h 14m2 stops Sydney Kingsford Smith Honolulu

$1,362Multiple Airlines

Wed, Oct 7 - Thu, Oct 15

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United Airlines flights from Ontario to Australia

Our best United Airlines deals on Ontario to Australia flight tickets

United Airlines

Oct 18

ONT4:03 pmOntario

21h 52m

1 stop

SYD7:55 amSydney Kingsford Smith

Nov 2

SYD11:50 amSydney Kingsford Smith

19h 39m

1 stop

ONT12:29 pmOntario

$1,105

United Airlines

Oct 18

ONT4:03 pmOntario

21h 52m

1 stop

SYD7:55 amSydney Kingsford Smith

Nov 2

SYD11:50 amSydney Kingsford Smith

19h 39m

1 stop

ONT12:29 pmOntario

$1,111

United Airlines

Oct 18

ONT4:03 pmOntario

21h 52m

1 stop

SYD7:55 amSydney Kingsford Smith

Nov 2

SYD11:50 amSydney Kingsford Smith

19h 39m

1 stop

ONT12:29 pmOntario

$1,113

Lufthansa flights from Ontario to Australia

Our best Lufthansa deals on Ontario to Australia flight tickets

Lufthansa

Oct 18

ONT1:52 pmOntario

24h 03m

1 stop

SYD7:55 amSydney Kingsford Smith

Nov 2

SYD11:50 amSydney Kingsford Smith

19h 39m

1 stop

ONT12:29 pmOntario

$1,067

Lufthansa

Oct 18

ONT1:52 pmOntario

24h 03m

1 stop

SYD7:55 amSydney Kingsford Smith

Nov 2

SYD11:50 amSydney Kingsford Smith

19h 39m

1 stop

ONT12:29 pmOntario

$1,082

Lufthansa

Oct 18

ONT1:52 pmOntario

24h 03m

1 stop

SYD7:55 amSydney Kingsford Smith

Nov 2

SYD11:50 amSydney Kingsford Smith

19h 39m

1 stop

ONT12:29 pmOntario

$1,096

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 2/1

7:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Sun 2/21

9:40 pm-9:28 pm

1 stop18h 48m

$951

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 10/28

7:00 am-7:45 pm

1 stop18h 45m

Sydney Kingsford Smith

Sun 11/8

9:40 pm-10:43 pm

1 stop20h 03m

$982

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 2/1

7:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Sun 2/28

9:40 pm-9:28 pm

1 stop18h 48m

$982

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Sun 2/21

9:00 am-7:45 pm

1 stop39h 45m

Sydney Kingsford Smith

Tue 3/2

9:40 pm-9:28 pm

1 stop18h 48m

$999

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Tue 11/3

9:55 am-7:45 pm

1 stop38h 50m

Sydney Kingsford Smith

Tue 11/24

9:40 pm-9:23 pm

1 stop18h 43m

$999

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Wed 10/28

7:00 am-7:45 pm

1 stop18h 45m

Sydney Kingsford Smith

Sun 11/8

9:40 pm-10:43 pm

1 stop20h 03m

$1,001

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 2/8

7:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Sun 2/21

9:40 pm-9:28 pm

1 stop18h 48m

$1,001

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Mon 2/8

7:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Sun 2/28

9:40 pm-9:28 pm

1 stop18h 48m

$1,001

OntarioSydney

ONT Ontario - SYD Sydney Kingsford Smith

ONTSYD

Ontario

Sun 10/18

4:03 pm-7:55 am

1 stop21h 52m

Sydney Kingsford Smith

Mon 11/2

11:50 am-12:29 pm

1 stop19h 39m

$1,105

OntarioMelbourne

ONT Ontario - MEL Melbourne

ONTMEL

Ontario

Mon 10/19

4:03 pm-9:15 am

1 stop23h 12m

Melbourne

Mon 11/2

12:45 pm-12:29 pm

1 stop18h 44m

$1,118

Flights are sorted by cheapest round-trip 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 16% 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	$496
Fastest flight time	17h 45m
Direct flights	None

The best one-way flight to Australia from Ontario in the past 72 hours is $496. The best round-trip flight deal from Ontario to Australia found on momondo in the last 72 hours is $951.

The fastest flight from Ontario to Australia takes 17h 45m

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 are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Australia?
As of October 2026, there is 1 operator available to choose from for flights from Ontario Airport to Australia.
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 layovers. 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 required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Ontario to Australia

Compare and see reviews for airlines that fly from Ontario to Australia with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $1,049	Free Cancellation	Rating 7.4 10,282 reviews		Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Ontario to Australia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Australia that suits you.

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

All flight searches from Ontario to Australia on momondo can be filtered to show those which offer flexible booking policies.

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.