The cheapest times to fly from ONT to SYD are
- January 29th to March 18th
- April 9th to May 6th (except the week of April 23rd)
- July 30th to December 2nd (except the weeks of October 8th and November 19th)
based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ONT to SYD is early to mid September. Prices can be as high as $2626 for Friday flights during late December, or as low as $965 for Tuesday flights around early to mid September.
When to Fly to Sydney
Flying from Ontario, CA (ONT) to Sydney (SYD) will usually cost between $1054 to $1957 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $1030. Due to high demand the most expensive time to fly is late December, with an average price of $2195. Planning your trip to low-cost times can easily save you $1165 on economy flights and even more on first-class flights. Generally, any price below $1254 can be considered a good price for a round-trip ONT to SYD flight.
See below for a graph of average weekly prices for the ONT to SYD route. All prices are for round-trip tickets in USD.
Compared to other flights, the ONT to SYD flight is slightly more expensive than the average and costs less than the average flight leaving from Ontario. The average price per mile (for a direct flight) is $0.1, which is far below average.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $179 (13%) on this flight.
Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1233. Return trip prices are from the SYD to ONT flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
Return Trip Prices by Day
Nonstop Flights and Layovers
Travelers looking to fly from ONT to SYD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 14 hour 33 minutes may not be realistic.
Flight Hacking ONT to SYD
Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ONT to SYD — but Champion Traveler does!
- Price for both tickets: $1087
- Average savings: $167 (13.28%)
- Price for both tickets: $1096
- Average savings: $158 (12.6%)
- Price for both tickets: $1146
- Average savings: $108 (8.58%)
Flight Questions Answered
Still have questions about flying from ONT to SYD? We’ve got answers.
Which airlines fly this route?
You can find 11 major airlines flying this route most often: Air Canada, Alaska, American, ANA, China Airlines, Delta, JAL, Qantas, Singapore Airlines, United, Virgin Australia, and potentially more during busy seasons.
How far away is it from Sydney International Airport to Ontario International Airport?
The distance between the two airports is roughly 7537 miles or 12130 kilometers.
How long does it take to fly from ONT to SYD?
The real-world flight time for a nonstop ONT to SYD flight is about 14 hour 33 minutes.
How many flights go between Ontario, CA and Sydney?
It depends on the day of the week and the date, but a typical day might have around 54 available flights from ONT to SYD.
Airport Location Info
|Origination airport name||Ontario International Airport|
|Country||the United States|
|Destination airport name||Sydney International Airport|
Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.