SYD - ONT

$865 Find Cheap Flights from Sydney to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sydney to Ontario departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
$1,400
United Airlines
Mon 9/3Mon 13/4
SYD - ONT • 1 stop
Cheapest one-way flight
$865
United Airlines
Tue 7/4
SYD - ONT • 2 stops
Top airlines
United Airlines
Cheapest • from $1,400 (return)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sydney to Ontario (SYD-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Sydney to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Sydney to Ontario

Mon, 9 Mar - Mon, 13 Apr
United Airlines Logo
12:10 - 12:18
SYD
-
ONT
18h 08m
1 stop
United Airlines Logo
18:49 - 06:55
ONT
-
SYD
19h 06m
1 stop
$1,400United Airlines
Thu, 5 Mar - Thu, 19 Mar
United Airlines Logo
12:10 - 12:18
SYD
-
ONT
19h 08m
1 stop
United Airlines Logo
18:37 - 09:15
ONT
-
SYD
20h 38m
1 stop
$1,457United Airlines
Fri, 24 Apr - Fri, 8 May
United Airlines Logo
10:20 - 09:56
SYD
-
ONT
16h 36m
1 stop
United Airlines Logo
18:59 - 06:55
ONT
-
SYD
18h 56m
1 stop
$1,506United Airlines
Thu, 14 May - Tue, 19 May
Multiple Airlines Logo
20:45 - 22:07
SYD
-
ONT
18h 22m
1 stop
Multiple Airlines Logo
09:30 - 18:50
ONT
-
SYD
40h 20m
1 stop
$1,540Multiple Airlines
Wed, 18 Mar - Wed, 8 Apr
United Airlines Logo
12:10 - 12:18
SYD
-
ONT
18h 08m
1 stop
United Airlines Logo
18:49 - 06:55
ONT
-
SYD
19h 06m
1 stop
$1,542United Airlines
Wed, 25 Feb - Wed, 4 Mar
United Airlines Logo
11:50 - 21:59
SYD
-
ONT
29h 09m
1 stop
United Airlines Logo
06:09 - 06:20
ONT
-
SYD
29h 11m
1 stop
$1,543United Airlines
Fri, 22 May - Tue, 26 May
Multiple Airlines Logo
20:45 - 22:07
SYD
-
ONT
18h 22m
1 stop
Multiple Airlines Logo
09:30 - 18:50
ONT
-
SYD
40h 20m
1 stop
$1,544Multiple Airlines
Wed, 25 Feb - Wed, 4 Mar
United Airlines Logo
11:50 - 21:59
SYD
-
ONT
29h 09m
1 stop
United Airlines Logo
18:37 - 09:15
ONT
-
SYD
19h 38m
1 stop
$1,546United Airlines
Tue, 14 Apr - Tue, 28 Apr
Multiple Airlines Logo
20:45 - 22:59
SYD
-
ONT
19h 14m
1 stop
Multiple Airlines Logo
15:26 - 18:50
ONT
-
SYD
34h 24m
2 stops
$1,562Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
20:45 - 22:59
SYD
-
ONT
19h 14m
1 stop
Multiple Airlines Logo
15:26 - 18:50
ONT
-
SYD
34h 24m
2 stops
$1,588Multiple Airlines
Booking Insights

KAYAK's insights & trends for Sydney to Ontario flights

Get data-powered insights and trends into flights from Sydney to Ontario to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Sydney to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from Sydney to Ontario were found on United Airlines ($1,400) and China Airlines ($1,752).

Find deals

Good to know

Cheapest flight$865
Flight from Sydney to Ontario

When to book flights from Sydney to Ontario

Are your dates flexible? Find out the best times to travel from Sydney to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sydney to Ontario

  • What is the cheapest flight from Sydney to Ontario?

    In the last 3 days, the lowest price for a flight from Sydney to Ontario was $865 for a one-way ticket and $1,400 for a return.

  • Which airports will I be using when flying from Sydney to Ontario?

    On your way to Ontario, you’ll fly out from Sydney Kingsford Smith. You’ll be landing at Ontario.

  • Which aircraft models fly most regularly from Sydney to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sydney to Ontario?

    Star Alliance is the only airline alliance operating flights between Sydney and Ontario.

  • How does KAYAK find such low prices on flights from Sydney to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sydney to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sydney to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Sydney is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sydney to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Ontario with an airline and back to Sydney with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sydney to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Sydney up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Sydney to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sydney to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9209 reviews
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
Airline reviews

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

6.0 GoodAnonymous, Jan 2026
SLC - SFO
Read more United Airlines reviews

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Mean flight attendant. I wanted to reuse my plastic cup, but he (Matthew) said he can't for safety. I then said "I don't want water then" and he poured me a glass. I hope Matthew gets herpes and spends the rest of his life poor, lonely, and homeless.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Both flights delayed. 2nd flight over 3 hours late mechanical issues

Flight was delayed 45 minutes because originating flight was coming from Newark. No complimentary snacks were offered on this 5+ hour flight. No screens for the flight, but movies offered if you had already downloaded the United app (which I hadn't on my ipad). No USB ports, only a flimsy plug-in port near the bottom of the seat that was hard to see and kept coming unplugged.

It was good but only meal served is very less. Meantime good to add rice and chicken in one of meal

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

On the way my flight entertainment wouldn’t work the screen went black and no matter how many times I tried to turn it on it wouldn’t. Food was surprisingly good but the tray tables were tiny so you couldn’t get anything else on the table. The seats hardly go back and are not overly comfortable. Wouldn’t fly United again.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

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

Information on your arrival and departure airports

Sydney (SYD)
Ontario (ONT)