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$973+ 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 24/4. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
30 Mar — 6 Apr1
1 adult

Flights to Ontario in 2025

Find the latest flights to Ontario in 2025, 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 25 March 2025.

Return from

$1,044

One-way from

$973

Popular in

December

Cheapest in

May

Average price

$1,224
Fiji Airways
  • Fiji Airways
  • 30/4-21/5
  • 2 total stops
  • 35h 30m total
  • Sydney to Los Angeles
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Hawaiian Airlines
  • Hawaiian Airlines
  • 24/4
  • 1 total stop
  • 17h 10m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($354 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($94 potential savings vs. average return price).
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Average for return flights in March 2025
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Find flight deals to Ontario

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 25 March 2025.

Thu 29/509:25SYD - ONT
2 stops31h 17mDelta
Wed 18/606:00ONT - SYD
2 stops31h 35mDelta
Deal found 25/3$1,292
Mon 28/410:20SYD - ONT
1 stop17h 45mUnited Airlines
Tue 20/515:10ONT - SYD
1 stop22h 45mUnited Airlines
Deal found 24/3$1,354
Thu 24/422:10SYD - ONT
1 stop36h 50mChina Airlines
Tue 6/500:10ONT - SYD
1 stop41h 35mChina Airlines
Deal found 24/3$1,716
Sun 27/421:40SYD - ONT
1 stop17h 10mHawaiian Airlines
Tue 10/609:50ONT - SYD
1 stop40h 55mHawaiian Airlines
Deal found 25/3$1,797
Wed 28/518:45SYD - ONT
2 stops40h 15mMultiple Airlines
Sun 29/600:10ONT - SYD
1 stop41h 35mMultiple Airlines
Deal found 24/3$2,295
Tue 1/710:20SYD - ONT
1 stop24h 23mLufthansa
Sat 19/713:19ONT - SYD
1 stop24h 36mLufthansa
Deal found 25/3$2,355

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 25 March 2025.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Sydney

Route

Depart

Return

Price

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 29/5

09:25-23:42

2 stops31h 17m

Ontario

Wed 18/6

06:00-06:35

2 stops31h 35m

$1,292

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 28/4

10:20-11:05

1 stop17h 45m

Ontario

Tue 20/5

15:10-06:55

1 stop22h 45m

$1,354

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 24/4

22:10-18:00

1 stop36h 50m

Ontario

Tue 6/5

00:10-10:45

1 stop41h 35m

$1,716

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 27/4

21:40-21:50

1 stop17h 10m

Ontario

Tue 10/6

09:50-19:45

1 stop40h 55m

$1,797

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 13/4

21:40-21:50

1 stop17h 10m

Ontario

Sat 26/4

14:27-22:10

2 stops38h 43m

$2,078

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 1/7

10:20-17:43

1 stop24h 23m

Ontario

Sat 19/7

13:19-06:55

1 stop24h 36m

$2,355

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 24/4

21:40-21:50

1 stop17h 10m

$973

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 2/6

16:20-21:55

1 stop22h 35m

$989

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 15/5

22:10-18:00

1 stop36h 50m

$1,111

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 15/5

10:20-20:53

2 stops27h 33m

$1,178

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 15 results
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

How long is the flight to Ontario?

On average, a flight from Sydney to Ontario takes 17 hours 10 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.

What are the most popular airlines that fly to Ontario?

The most popular airline flying from Sydney to Ontario is United Airlines.

United Airlines

United Airlines

From $798

What are the cheapest airlines that fly to Ontario?

The cheapest airline flying from Sydney to Ontario is United Airlines.

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).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 25 March 2025.
Read through reviews of airlines servicing Ontario, such as Japan Airlines, China Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very Good
1,440 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
China Airlines
8.2
Very Good
722 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Delta
8.0
Very Good
7,890 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Hawaiian Airlines
7.9
Good
2,331 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Qatar Airways
7.4
Good
3,539 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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.

  • What is the best airline to fly to Ontario?

    Based on reviews from Cheapflights users, United Airlines is rated the highest out of the airlines that fly to Ontario.

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, Sydney Kingsford Smith offers the quickest one-way flight (17 hours 10 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

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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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