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$652+ Cheap flights to Ontario

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
9 Sep — 16 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Ontario in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Ontario
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 10 August 2026.

Mon 17/810:20 -
1 stop18h 52m
Sun 30/819:13 -
1 stop18h 42m
Deal found 7/8$1,127
Tue 8/910:20 -
2 stops43h 30m
Tue 15/906:00 -
2 stops55h 55m
Deal found 7/8$1,139
Mon 17/810:20 -
1 stop18h 52m
Sun 30/819:13 -
1 stop18h 42m
Deal found 7/8$1,140
Wed 11/1109:15 -
2 stops30h 36m
Sat 21/1113:29 -
2 stops46h 31m
Deal found 10/8$1,144

Find flight deals to Ontario

Find the latest flights to Ontario in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 10 August 2026.

Return from

$863

One-way from

$652

Popular in

December

Cheapest in

August

Average price

$1,081
Fiji Airways
  • Fiji Airways
  • 26/8-31/8
  • 2 total stops
  • 35h 45m total
  • Sydney to Los Angeles
Search Deals
Virgin Australia
  • Virgin Australia
  • 24/9
  • 1 total stop
  • 24h 31m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($88 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 10 August 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Thu 1/10

10:20-10:23

1 stop17h 03m

Ontario

Wed 7/10

05:00-07:55

2 stops32h 55m

$1,140

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Wed 2/9

10:20-18:16

1 stop24h 56m

Ontario

Sat 5/9

13:18-06:55

2 stops48h 37m

$1,140
Fastest return journey

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 17/8

10:20-12:12

1 stop18h 52m

Ontario

Sun 30/8

19:13-06:55

1 stop18h 42m

$1,141

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 17/8

10:20-21:59

2 stops28h 39m

Ontario

Fri 21/8

05:00-06:55

2 stops32h 55m

$1,214

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sat 29/8

10:20-20:53

2 stops27h 33m

Ontario

Sat 5/9

13:18-06:55

2 stops48h 37m

$1,214

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 23/8

10:20-18:11

1 stop24h 51m

Ontario

Sat 29/8

13:18-06:55

2 stops48h 37m

$1,216

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Fri 28/8

10:20-18:11

1 stop24h 51m

Ontario

Sat 29/8

13:18-06:55

2 stops48h 37m

$1,218

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 6/9

20:45-22:10

1 stop18h 25m

Ontario

Wed 9/9

09:31-18:50

1 stop40h 19m

$1,929

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Fri 9/10

15:50-10:17

2 stops60h 27m

Ontario

Fri 2/4

06:00-18:05

2 stops42h 05m

$2,204

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 6/9

14:50-13:31

2 stops39h 41m

Ontario

Wed 9/9

06:02-17:10

2 stops42h 08m

$2,714

Flights are sorted by cheapest return flights first.

Deals found on 7/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight to Ontario

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

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 mm per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

How long is the flight to Ontario?

On average, a flight from Sydney to Ontario takes 17 hours 3 minutes. Flights to Ontario from other popular cities in Australia will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flying to Ontario

  • What airport do you fly into for flights to Ontario?

    Most people fly into Ontario (ONT) if they book a flight to Ontario. Ontario is conveniently located just 4.9 km from Ontario’s city centre.

  • Can I find cheaper flights to Ontario if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, Brisbane offers the quickest one-way flight (16 hours 17 minutes).

  • Does Ontario have car hire?

    Yes. Those touching down at Ontario can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ontario?

    Yes. Ontario has hotels nearby for those requiring accommodations. Delta Hotels by Marriott Ontario Airport is the closest property to Ontario (0.0 km away from Ontario).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Search flights to Ontario by cabin class

Find flights to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class flights to Ontario
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Fly with Cheapflights

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How does Cheapflights help users find flights to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets to Ontario?

Cheapflights helps you find that perfect flight to Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights to Ontario with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights to Ontario become cheaper?

Yes! Start tracking prices for Ontario flights today and get alerted when prices change. To subscribe and begin receiving alerts, click the bell icon next to the flight deals above and provide your email address.

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