What are the cheapest airlines flying from Ontario to Sydney round-trip?

Cheapflights users have booked flights from Ontario to Sydney round-trip from $1,061. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $1,220, and United Airlines, from $1,267.

What are the cheapest airlines to fly from Ontario to Sydney one-way?

$631 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and Hawaiian Airlines, with prices starting from $723 and $955, respectively.

What is the cheapest day to fly from Ontario to Sydney?

Travelers seeking maximum savings on their Ontario to Sydney flight should consider departing on Saturday evenings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Ontario to Sydney?

The most popular airlines flying from Ontario to Sydney are Fiji Airways, Qantas Airways and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Ontario to Sydney?

Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 33% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Ontario to Sydney?

To save on the cost of your flight from Ontario to Sydney, book at least 16 days before your planned departure. Booking around this time can save you about 5% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $944 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,018.

What is the cheapest month to fly from Ontario to Sydney?

August can be a great time to fly to Sydney from Ontario with a flight ticket averaging about $1,007. Cheapflights users have found deals in the month of August for as cheap as $711. The most expensive prices can be found in the month of December.

Most accurate provider : When it comes to deals on Ontario-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Sydney flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Ontario to Sydney that include hotel bookings?

Yes. In addition to deals on Ontario to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Sydney?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Sydney.

Can I find deals for business class flights from Ontario to Sydney?

Yes. Cheapflights offers flight deals from Ontario to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$426+ Save on Flights from Ontario to Sydney

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheap flight deals from Ontario to Sydney

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$1,061 (Alaska Airlines)
One-way from	$426 (Expedia)
Popular in	May
Cheapest in	April
Average price	$1,130

Provider with most accurate pricing for Ontario-Sydney Kingsford Smith flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Sydney Kingsford Smith flights.

Search Deals

From Ontario to Sydney Kingsford Smith

Search Deals

One-way flight from Ontario to Sydney Kingsford Smith

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($44 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Find flight deals from Ontario to Sydney

Cheapest flights from Ontario to Sydney
Explore the most affordable flight options available from Ontario to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Wed 10/226:55 pmONT - SYD

2 stops30h 50mAlaska Airlines

Tue 11/49:40 pmSYD - ONT

1 stop19h 15mAlaska Airlines

Deal found 3/24

$1,061

Thu 10/169:50 amONT - SYD

1 stop39h 55mHawaiian Airlines

Thu 11/139:40 pmSYD - ONT

1 stop19h 15mHawaiian Airlines

Deal found 3/24

$1,073

Thu 6/269:00 amONT - SYD

1 stop36h 40mMultiple Airlines

Wed 7/164:20 pmSYD - ONT

1 stop22h 07mMultiple Airlines

Deal found 3/23

$1,224

Wed 6/256:00 amONT - SYD

2 stops31h 35mDelta

Wed 7/169:25 amSYD - ONT

2 stops31h 18mDelta

Deal found 3/23

$1,244

Sun 5/183:10 pmONT - SYD

1 stop22h 45mUnited Airlines

Sun 6/110:20 amSYD - ONT

1 stop18h 54mUnited Airlines

Deal found 3/24

$1,267

Sun 6/1512:49 pmONT - SYD

2 stops25h 16mAmerican Airlines

Fri 7/189:10 amSYD - ONT

2 stops25h 58mAmerican Airlines

Deal found 3/23

$1,299

Wed 6/256:00 amONT - SYD

2 stops32h 20mAir Canada

Wed 7/99:20 amSYD - ONT

2 stops43h 54mAir Canada

Deal found 3/24

$1,635

Mon 9/812:45 amONT - SYD

1 stop41h 00mChina Airlines

Sun 9/2110:10 pmSYD - ONT

1 stop36h 50mChina Airlines

Deal found 3/24

$2,040

Best flights from Ontario to Sydney
Discover carefully curated flight deals from Ontario to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Wed 5/78:59 pmONT - SYD

2 stops29h 46mAlaska Airlines

Sat 5/319:40 pmSYD - ONT

2 stops30h 17mAlaska Airlines

Deal found 3/23

$1,061

Tue 4/159:45 amONT - SYD

1 stop41h 00mHawaiian Airlines

Tue 4/229:40 pmSYD - ONT

1 stop17h 10mHawaiian Airlines

Deal found 3/23

$1,220

Mon 5/123:10 pmONT - SYD

1 stop22h 45mUnited Airlines

Sun 5/2510:20 amSYD - ONT

1 stop18h 54mUnited Airlines

Deal found 3/23

$1,267

Sun 6/1512:49 pmONT - SYD

2 stops25h 16mAmerican Airlines

Fri 7/189:10 amSYD - ONT

2 stops25h 58mAmerican Airlines

Deal found 3/23

$1,299

Fri 4/2511:59 pmONT - SYD

2 stops53h 11mMultiple Airlines

Sat 5/101:45 pmSYD - ONT

2 stops25h 13mMultiple Airlines

Deal found 3/23

$1,623

Mon 4/1412:10 amONT - SYD

1 stop41h 35mChina Airlines

Mon 4/2810:10 pmSYD - ONT

1 stop36h 50mChina Airlines

Deal found 3/23

$2,064

Tue 4/11:20 pmONT - SYD

2 stops25h 00mAir Canada

Thu 4/109:20 amSYD - ONT

2 stops30h 35mAir Canada

Deal found 3/24

$2,516

Tue 4/226:00 amONT - SYD

2 stops42h 10mQatar Airways

Tue 4/298:45 pmSYD - ONT

2 stops40h 44mQatar Airways

Deal found 3/23

$2,646

Last-minute flights from Ontario to Sydney
Discover last-minute flight deals from Ontario to Sydney. Data last updated March 25, 2025 and is based on user searches.

Sat 3/296:00 amONT - SYD

2 stops42h 10mQatar Airways

Mon 3/319:45 pmSYD - ONT

2 stops38h 38mQatar Airways

Deal found 3/24

$3,119

Mon 3/311:20 pmONT - SYD

1 stop24h 35mUnited Airlines

Mon 4/710:20 amSYD - ONT

1 stop24h 31mUnited Airlines

Deal found 3/23

$1,816

Mon 3/3112:10 amONT - SYD

1 stop41h 35mChina Airlines

Thu 4/1010:10 pmSYD - ONT

1 stop36h 50mChina Airlines

Deal found 3/24

$2,544

Tue 4/11:20 pmONT - SYD

2 stops25h 00mAir Canada

Thu 4/109:20 amSYD - ONT

2 stops30h 35mAir Canada

Deal found 3/24

$2,516

Wed 4/28:50 amONT - SYD

1 stop40h 55mHawaiian Airlines

Tue 4/229:40 pmSYD - ONT

1 stop17h 10mHawaiian Airlines

Deal found 3/23

$1,229

Wed 4/99:45 amONT - SYD

1 stop41h 00mAlaska Airlines

Sat 4/269:40 pmSYD - ONT

2 stops37h 50mAlaska Airlines

Deal found 3/24

$1,296

Thu 4/1012:10 amONT - SYD

1 stop41h 35mChina Airlines

Sun 4/2710:10 pmSYD - ONT

1 stop36h 50mChina Airlines

Deal found 3/24

$2,112

Thu 4/1711:33 amONT - SYD

2 stops36h 37mQatar Airways

Sun 5/48:45 pmSYD - ONT

2 stops37h 45mQatar Airways

Deal found 3/24

$2,841

Mon 4/213:55 pmONT - SYD

1 stop22h 00mUnited Airlines

Mon 5/1910:20 amSYD - ONT

1 stop19h 04mUnited Airlines

Deal found 3/24

$1,456

Wed 4/3011:59 pmONT - SYD

2 stops43h 16mMultiple Airlines

Sat 5/171:45 pmSYD - ONT

2 stops25h 13mMultiple Airlines

Deal found 3/23

$1,774

One-way flights from Ontario to Sydney
Search for one-way flight options from Ontario to Sydney. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Wed 4/28:50 amONT - SYD

1 stop36h 50mMultiple Airlines

Deal found 3/23

$426

Wed 4/25:44 pmONT - SYD

2 stops32h 01mAlaska Airlines

Deal found 3/23

$631

Wed 5/216:48 pmONT - SYD

1 stop19h 07mUnited Airlines

Deal found 3/24

$723

Fri 5/29:45 amONT - SYD

1 stop41h 00mHawaiian Airlines

Deal found 3/23

$955

Sat 4/511:42 amONT - SYD

3 stops25h 53mWestJet

Deal found 3/23

$1,136

Tue 4/812:10 amONT - SYD

1 stop41h 35mChina Airlines

Deal found 3/24

$1,237

Sat 4/2611:46 amONT - SYD

2 stops36h 24mQatar Airways

Deal found 3/24

$1,548

Fri 5/210:40 pmONT - SYD

2 stops50h 20mEtihad Airways

Deal found 3/23

$1,758

Sat 5/2412:41 pmONT - SYD

1 stop25h 14mAmerican Airlines

Deal found 3/24

$2,078

Tue 4/291:20 pmONT - SYD

2 stops25h 00mAir Canada

Deal found 3/24

$6,685

Cheapflights Fare Finder

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

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Fri 8/15

9:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Fri 8/22

9:40 pm-5:10 pm

2 stops36h 30m

$1,061

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 6/26

9:00 am-2:40 pm

1 stop36h 40m

Sydney Kingsford Smith

Wed 7/16

4:20 pm-9:27 pm

1 stop22h 07m

$1,224

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 6/25

6:00 am-6:35 am

2 stops31h 35m

Sydney Kingsford Smith

Wed 7/16

9:25 am-11:43 pm

2 stops31h 18m

$1,244

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 5/18

9:50 am-7:45 pm

1 stop40h 55m

Sydney Kingsford Smith

Sun 6/1

9:40 pm-9:55 pm

1 stop17h 15m

$1,259

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 5/18

6:48 pm-6:55 am

1 stop19h 07m

Sydney Kingsford Smith

Sun 6/1

10:20 am-12:14 pm

1 stop18h 54m

$1,267

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Sun 6/15

12:49 pm-7:05 am

2 stops25h 16m

Sydney Kingsford Smith

Fri 7/18

9:10 am-6:08 pm

2 stops25h 58m

$1,299

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 6/25

6:00 am-7:20 am

2 stops32h 20m

Sydney Kingsford Smith

Wed 7/9

9:20 am-12:14 pm

2 stops43h 54m

$1,635

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Mon 9/8

12:45 am-10:45 am

1 stop41h 00m

Sydney Kingsford Smith

Sun 9/21

10:10 pm-6:00 pm

1 stop36h 50m

$2,040

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Wed 4/9

9:45 am-2:40 pm

1 stop35h 55m

$558

OntarioSydney

ONT - SYD

ONTSYD

Ontario

Thu 9/4

8:35 am-7:45 pm

1 stop18h 10m

$631

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 16 results

Compare providers for flights from Ontario to Sydney

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Sydney in March.

Provider	Price Accuracy	Trust Score*
AranGrant	Price Accuracy3 stars	Trust Score*1 star
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Sydney flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Sydney

What is the cheapest month to book a flight from Ontario to Sydney?

Currently, March is the cheapest month in which you can book a flight from Ontario to Sydney (average of $1,044). Flying from Ontario to Sydney in December is currently the most expensive (average of $1,643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to SYD?

One of the essential ways to save on airfare from Ontario to Sydney is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 26% on airfare.

Rainfall in Sydney by month

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

See what other customers who have flown with China Airlines, Alaska Airlines and Hawaiian Airlines from Ontario to Sydney have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

China Airlines

8.2

Very good

723 reviews

Reviews

1 / 20

10.0

Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

China Airlines

8.2

Very good

723 reviews

China Airlines

8.2

Very good

723 reviews

Reviews

1 / 20

10.0

Excellent

Sopharith,Feb 2025

TPE - PNH

Alaska Airlines

8.0

Very good

9,782 reviews

China Airlines

8.2

Very good

723 reviews

Reviews

1 / 20

10.0

Excellent

Sopharith,Feb 2025

TPE - PNH

Hawaiian Airlines

7.9

Good

2,330 reviews

China Airlines

8.2

Very good

723 reviews

Reviews

1 / 20

10.0

Excellent

Sopharith,Feb 2025

TPE - PNH

Qatar Airways

7.4

Good

3,540 reviews

China Airlines

8.2

Very good

723 reviews

Reviews

1 / 20

10.0

Excellent

Sopharith,Feb 2025

TPE - PNH

Etihad Airways

7.4

Good

1,176 reviews

China Airlines

8.2

Very good

723 reviews

Reviews

1 / 20

10.0

Excellent

Sopharith,Feb 2025

TPE - PNH

Related info for your journey

What are the cheapest airlines flying from Ontario to Sydney round-trip?
Cheapflights users have booked flights from Ontario to Sydney round-trip from $1,061. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $1,220, and United Airlines, from $1,267.
What are the cheapest airlines to fly from Ontario to Sydney one-way?
$631 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and Hawaiian Airlines, with prices starting from $723 and $955, respectively.
Can I find deals for flights from Ontario to Sydney that include hotel bookings?
Yes. In addition to deals on Ontario to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Sydney.
Can I find deals for business class flights from Ontario to Sydney?
Yes. Cheapflights offers flight deals from Ontario to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to Sydney?
Currently, March is the cheapest month in which you can book a flight from Ontario to Sydney (average of $1,044). Flying from Ontario to Sydney in December is currently the most expensive (average of $1,643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to Sydney

Top 3 airlines flying from Ontario to Sydney

Airline	Cheapest	Average	Flexibility	On-time
Fiji Airways	Cheapest$732	Average$855	FlexibilityNo cancel fee	On-time74%
United Airlines	Cheapest$909	Average$1,210	FlexibilityNo cancel fee	On-time69%
Qantas Airways	Cheapest$1,042	Average$1,086	FlexibilityNo cancel fee	On-time74%

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$426+ Cheap flights from Ontario (ONT) to Sydney (SYD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Sydney with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Sydney

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Sydney

Cheapest flights from Ontario to SydneyExplore the most affordable flight options available from Ontario to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Explore the most affordable flight options available from Ontario to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Sydney that are best for you.

Compare providers for flights from Ontario to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Sydney in March.

Best time to book a flight from Ontario to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Sydney

What is the cheapest month to book a flight from Ontario to Sydney?

What is the cheapest time of day to fly from ONT to SYD?

Find hourly flight availability from Ontario to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

Reviews of airlines servicing Sydney

See what other customers who have flown with China Airlines, Alaska Airlines and Hawaiian Airlines from Ontario to Sydney have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Ontario to Sydney round-trip?

What are the cheapest airlines to fly from Ontario to Sydney one-way?

Can I find deals for flights from Ontario to Sydney that include hotel bookings?

How can I find direct flights from Ontario to Sydney?

Can I find deals for business class flights from Ontario to Sydney?

What is the cheapest month to book a flight from Ontario to Sydney?

Traveling to a place near Ontario?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ontario to Sydney

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Cheapest flights from Ontario to Sydney
Explore the most affordable flight options available from Ontario to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.