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Cheap flights from Ontario to Sydney from $565

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Sydney departing on 10/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Ontario to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 6:50 pm
ONT
-
SYD
17h 50m
1 stop
Multiple Airlines Logo
9:40 pm - 9:01 pm
SYD
-
ONT
17h 21m
1 stop
$986Multiple Airlines
Mon, Oct 19 - Sun, Oct 25
Multiple Airlines Logo
9:11 am - 6:50 pm
ONT
-
SYD
40h 39m
1 stop
Multiple Airlines Logo
8:45 pm - 10:10 pm
SYD
-
ONT
18h 25m
1 stop
$1,003Multiple Airlines
Tue, Aug 11 - Tue, Aug 25
Multiple Airlines Logo
9:31 am - 6:50 pm
ONT
-
SYD
40h 19m
1 stop
Multiple Airlines Logo
8:45 pm - 10:10 pm
SYD
-
ONT
18h 25m
1 stop
$1,014Multiple Airlines
Sun, Aug 23 - Sun, Sep 6
Multiple Airlines Logo
9:11 am - 6:50 pm
ONT
-
SYD
40h 39m
1 stop
Multiple Airlines Logo
8:45 pm - 9:45 pm
SYD
-
ONT
18h 00m
1 stop
$1,020Multiple Airlines
Tue, Aug 4 - Tue, Aug 18
Multiple Airlines Logo
7:00 am - 6:50 pm
ONT
-
SYD
17h 50m
1 stop
Multiple Airlines Logo
9:40 pm - 9:32 pm
SYD
-
ONT
18h 52m
1 stop
$1,024Multiple Airlines
Wed, Oct 21 - Thu, Nov 12
Multiple Airlines Logo
9:11 am - 6:50 pm
ONT
-
SYD
40h 39m
1 stop
Multiple Airlines Logo
8:45 pm - 9:45 pm
SYD
-
ONT
18h 00m
1 stop
$1,030Multiple Airlines
Sun, Jul 12 - Sun, Jul 26
Multiple Airlines Logo
9:31 am - 6:50 pm
ONT
-
SYD
40h 19m
1 stop
Multiple Airlines Logo
8:45 pm - 10:10 pm
SYD
-
ONT
18h 25m
1 stop
$1,038Multiple Airlines
Wed, Aug 26 - Sun, Sep 6
Multiple Airlines Logo
9:31 am - 6:50 pm
ONT
-
SYD
40h 19m
1 stop
Multiple Airlines Logo
8:45 pm - 10:10 pm
SYD
-
ONT
18h 25m
1 stop
$1,040Multiple Airlines
Wed, Aug 26 - Sun, Sep 6
Multiple Airlines Logo
7:00 am - 6:50 pm
ONT
-
SYD
17h 50m
1 stop
Multiple Airlines Logo
9:40 pm - 9:32 pm
SYD
-
ONT
18h 52m
1 stop
$1,043Multiple Airlines
Sat, Oct 17 - Sun, Nov 1
Multiple Airlines Logo
7:00 am - 6:50 pm
ONT
-
SYD
17h 50m
1 stop
Multiple Airlines Logo
9:40 pm - 9:32 pm
SYD
-
ONT
18h 52m
1 stop
$1,047Multiple Airlines
Mon, Oct 19 - Sun, Nov 15

United Airlines flights from Ontario to Sydney

Our best United Airlines deals on Ontario to Sydney flight tickets
United Airlines
Sep 14
ONT1:56 pmOntario
23h 59m
1 stop
SYD6:55 amSydney Kingsford Smith
Sep 21
SYD10:20 amSydney Kingsford Smith
18h 52m
1 stop
ONT12:12 pmOntario
$1,095
United Airlines
Jun 16
ONT1:18 pmOntario
24h 37m
2 stops
SYD6:55 amSydney Kingsford Smith
Jun 21
SYD10:20 amSydney Kingsford Smith
18h 52m
1 stop
ONT12:12 pmOntario
$1,100
United Airlines
Jun 15
ONT6:39 pmOntario
19h 16m
1 stop
SYD6:55 amSydney Kingsford Smith
Jul 1
SYD10:20 amSydney Kingsford Smith
18h 52m
1 stop
ONT12:12 pmOntario
$1,102

Air New Zealand flights from Ontario to Sydney

Our best Air New Zealand deals on Ontario to Sydney flight tickets
Air New Zealand
Jun 16
ONT6:39 pmOntario
19h 16m
1 stop
SYD6:55 amSydney Kingsford Smith
Jun 22
SYD10:20 amSydney Kingsford Smith
24h 36m
1 stop
ONT5:56 pmOntario
$1,086
Air New Zealand
Jul 6
ONT6:00 amOntario
31h 55m
1 stop
SYD6:55 amSydney Kingsford Smith
Jul 13
SYD10:20 amSydney Kingsford Smith
18h 52m
1 stop
ONT12:12 pmOntario
$1,092
Air New Zealand
Aug 12
ONT1:56 pmOntario
23h 59m
1 stop
SYD6:55 amSydney Kingsford Smith
Aug 19
SYD10:20 amSydney Kingsford Smith
18h 52m
1 stop
ONT12:12 pmOntario
$1,101

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 5, 2026.
Use the filters below to find and compare flights from Ontario to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 10/19

7:00 am-6:50 pm

1 stop17h 50m

Sydney Kingsford Smith

Sun 10/25

9:40 pm-9:01 pm

1 stop17h 21m

$986

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 8/11

9:11 am-6:50 pm

1 stop40h 39m

Sydney Kingsford Smith

Tue 8/25

8:45 pm-10:10 pm

1 stop18h 25m

$1,003

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 8/23

9:31 am-6:50 pm

1 stop40h 19m

Sydney Kingsford Smith

Sun 9/6

8:45 pm-10:10 pm

1 stop18h 25m

$1,014

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Tue 8/4

9:11 am-6:50 pm

1 stop40h 39m

Sydney Kingsford Smith

Tue 8/18

8:45 pm-9:45 pm

1 stop18h 00m

$1,020

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 10/21

7:00 am-6:50 pm

1 stop17h 50m

Sydney Kingsford Smith

Thu 11/12

9:40 pm-9:32 pm

1 stop18h 52m

$1,024

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 7/12

9:11 am-6:50 pm

1 stop40h 39m

Sydney Kingsford Smith

Sun 7/26

8:45 pm-9:45 pm

1 stop18h 00m

$1,030

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 8/26

9:31 am-6:50 pm

1 stop40h 19m

Sydney Kingsford Smith

Sun 9/6

8:45 pm-10:10 pm

1 stop18h 25m

$1,038

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 8/26

9:31 am-6:50 pm

1 stop40h 19m

Sydney Kingsford Smith

Sun 9/6

8:45 pm-10:10 pm

1 stop18h 25m

$1,040

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sat 10/17

7:00 am-6:50 pm

1 stop17h 50m

Sydney Kingsford Smith

Sun 11/1

9:40 pm-9:32 pm

1 stop18h 52m

$1,043

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 10/19

7:00 am-6:50 pm

1 stop17h 50m

Sydney Kingsford Smith

Sun 11/15

9:40 pm-9:32 pm

1 stop18h 52m

$1,047

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Ontario to Sydney is on a Wednesday when prices can be found for as low as $998. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,085.

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 round-trip 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.
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Frequently asked questions about flying from Ontario to Sydney

  • How far is Ontario to Sydney Kingsford Smith by plane?

    A flight from Ontario to Sydney Kingsford Smith will travel around 7527.4 mi. 17h 50m is a normal flight duration for this route.

  • 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 updated daily.

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Katoomba
Penrith
Wollongong
Leura
Randwick
Lithgow
Manly
Coogee
Cronulla
Terrigal
Charlestown
Swansea

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Sydney. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Sydney from Ontario with this policy.

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

Once all potential Ontario to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Sydney from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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