SYD - ONT

$731 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 1/6. 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

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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Flights Deals

Cheap Flight Deals 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.

Recent return flight deals from Sydney to Ontario

KAYAK's recommended return flight deals from the most popular airlines that fly from Sydney to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
09:25 - 23:42SYD-ONT
31h 17m2 stops
Delta Logo
06:00 - 06:35ONT-SYD
31h 35m2 stops
$1,305Delta
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Sun, 1 Jun - Mon, 16 Jun
United Airlines Logo
10:20 - 12:14SYD-ONT
18h 54m1 stop
United Airlines Logo
18:41 - 06:55ONT-SYD
19h 14m1 stop
$1,369United Airlines
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Sun, 1 Jun - Sat, 14 Jun
United Airlines Logo
10:20 - 17:25SYD-ONT
24h 05m2 stops
United Airlines Logo
13:34 - 06:55ONT-SYD
24h 21m2 stops
$1,371United Airlines
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Wed, 18 Jun - Wed, 2 Jul
Lufthansa Logo
10:20 - 12:14SYD-ONT
18h 54m1 stop
Lufthansa Logo
18:41 - 06:55ONT-SYD
19h 14m1 stop
$1,543Lufthansa
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Sun, 1 Jun - Sat, 14 Jun
Hawaiian Airlines Logo
21:40 - 21:55SYD-ONT
18h 15m1 stop
Hawaiian Airlines Logo
09:50 - 19:45ONT-SYD
39h 55m1 stop
$1,640Hawaiian Airlines
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Tue, 14 Oct - Thu, 23 Oct
Alaska Airlines Logo
21:40 - 21:55SYD-ONT
18h 15m1 stop
Alaska Airlines Logo
09:50 - 18:20ONT-SYD
38h 30m1 stop
$1,732Alaska Airlines
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Sun, 12 Oct - Sat, 25 Oct
Hawaiian Airlines Logo
21:40 - 11:05SYD-ONT
30h 25m2 stops
Hawaiian Airlines Logo
09:00 - 19:45ONT-SYD
17h 45m1 stop
$1,737Hawaiian Airlines
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Tue, 29 Jul - Sat, 2 Aug
China Airlines Logo
22:10 - 17:50SYD-ONT
37h 40m1 stop
China Airlines Logo
23:45 - 12:10ONT-SYD
42h 25m1 stop
$1,769China Airlines
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Sun, 26 Oct - Sat, 1 Nov
Alaska Airlines Logo
21:40 - 21:55SYD-ONT
17h 15m1 stop
Alaska Airlines Logo
09:50 - 19:45ONT-SYD
40h 55m1 stop
$1,782Alaska Airlines
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Thu, 29 May - Wed, 4 Jun
China Airlines Logo
22:10 - 18:00SYD-ONT
36h 50m1 stop
China Airlines Logo
00:10 - 10:45ONT-SYD
41h 35m1 stop
$1,812China Airlines
Find Deal
Mon, 12 May - Mon, 19 May
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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 Delta ($1,305) and United Airlines ($1,369).

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Good to know

Low seasonAugust
High seasonJune
Cheapest flight$731
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (20% more expensive on average)
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 $468 for a one-way ticket and $835 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, oneworld, and SkyTeam are the airline alliances operating flights between Sydney and Ontario, with oneworld being the most commonly used for this route.

  • 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.

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 8696 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

10.0 ExcellentMohammad Hassan Mirzai, May 2025HKG - SFO
Read more United Airlines reviews

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

A bit rush for transit. Food and entertainment are not available

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

headphone jack didnt work for the first flight and not much variety

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

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

Information on your arrival and departure airports

Ontario (ONT)
Sydney (SYD)

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