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$780+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
18 Jun — 25 Jun1
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 13 June 2025.

Return from

$1,079

One-way from

$780

Popular in

December

Cheapest in

May

Average price

$1,325
Fiji Airways
  • Fiji Airways
  • 26/7-1/10
  • 2 total stops
  • 35h 00m total
  • Sydney to Los Angeles
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United Airlines
  • United Airlines
  • 8/8
  • 2 total stops
  • 28h 17m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($320 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($81 potential savings vs. average return price).
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Average for return flights in June 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 13 June 2025.

Sun 27/709:25SYD - ONT
2 stops31h 17mDelta
Sun 3/806:00ONT - SYD
2 stops31h 35mDelta
Deal found 12/6$1,303
Fri 1/810:20SYD - ONT
2 stops27h 34mUnited Airlines
Thu 21/806:04ONT - SYD
2 stops31h 51mUnited Airlines
Deal found 12/6$1,329
Fri 1/810:20SYD - ONT
1 stop18h 54mLufthansa
Thu 14/818:39ONT - SYD
1 stop19h 16mLufthansa
Deal found 11/6$1,460
Fri 1/821:40SYD - ONT
2 stops32h 46mAlaska Airlines
Thu 21/808:35ONT - SYD
1 stop18h 10mAlaska Airlines
Deal found 12/6$1,566
Thu 12/622:10SYD - ONT
1 stop36h 50mChina Airlines
Tue 24/600:10ONT - SYD
1 stop41h 35mChina Airlines
Deal found 10/6$1,741
Sun 27/716:20SYD - ONT
1 stop22h 07mMultiple Airlines
Sun 3/816:00ONT - SYD
2 stops46h 30mMultiple Airlines
Deal found 12/6$1,833
Tue 24/621:40SYD - ONT
2 stops30h 25mHawaiian Airlines
Sat 28/609:00ONT - SYD
1 stop17h 45mHawaiian Airlines
Deal found 10/6$2,203

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 13 June 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

Sun 27/7

09:25-23:42

2 stops31h 17m

Ontario

Sun 3/8

06:00-06:35

2 stops31h 35m

$1,303

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 1/8

10:20-12:14

1 stop18h 54m

Ontario

Fri 22/8

18:50-06:55

1 stop19h 05m

$1,329

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 29/7

21:40-11:05

2 stops30h 25m

Ontario

Fri 22/8

08:35-19:45

1 stop18h 10m

$1,443

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 1/8

10:20-12:14

1 stop18h 54m

Ontario

Thu 14/8

18:39-06:55

1 stop19h 16m

$1,460

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 17/7

22:10-18:40

1 stop37h 30m

Ontario

Tue 29/7

00:45-10:45

1 stop41h 00m

$1,824

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 27/7

16:20-21:27

1 stop22h 07m

Ontario

Sun 3/8

16:00-07:30

2 stops46h 30m

$1,833

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 8/8

10:20-22:52

1 stop29h 32m

$780

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sat 25/10

21:40-17:14

1 stop37h 34m

$1,091

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 24/10

22:10-18:00

1 stop37h 50m

$1,131

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 20/6

16:20-22:46

3 stops47h 26m

$1,412

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 16 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 16 hours 49 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 13 June 2025.
Read through reviews of airlines servicing Ontario, such as China Airlines, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very Good
738 reviews
Check prices

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.3
Very Good
738 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Alaska Airlines
8.0
Very Good
10,000 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Delta
8.0
Very Good
7,946 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Hawaiian Airlines
7.9
Good
2,496 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
LATAM Airlines
7.5
Good
1,785 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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, Melbourne offers the quickest one-way flight (18 hours 19 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?

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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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