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$814+ 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 27/2. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
26 Feb — 5 Mar1
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 21 February 2025.

Return from

$1,008

One-way from

$814

Popular in

December

Cheapest in

May

Average price

$1,204
Fiji Airways
  • Fiji Airways
  • 20/5-27/5
  • 2 total stops
  • 42h 30m total
  • Sydney to Los Angeles
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United Airlines
  • United Airlines
  • 27/2
  • 1 total stop
  • 29h 09m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($335 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($91 potential savings vs. average return price).
Search Deals
Average for return flights in February 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 21 February 2025.

Fri 21/216:15SYD - ONT
1 stop17h 14mUnited Airlines
Sun 9/318:45ONT - SYD
1 stop20h 30mUnited Airlines
Deal found 20/2$1,345
Sun 23/212:10SYD - ONT
1 stop27h 30mLufthansa
Tue 11/318:45ONT - SYD
1 stop20h 30mLufthansa
Deal found 20/2$1,375
Fri 21/221:40SYD - ONT
1 stop19h 10mHawaiian Airlines
Tue 25/209:45ONT - SYD
1 stop39h 00mHawaiian Airlines
Deal found 20/2$1,554
Mon 1/922:10SYD - ONT
1 stop37h 30mChina Airlines
Sun 7/900:45ONT - SYD
1 stop41h 00mChina Airlines
Deal found 20/2$1,798
Sat 14/618:10SYD - ONT
2 stops40h 50mMultiple Airlines
Thu 26/600:10ONT - SYD
1 stop41h 35mMultiple Airlines
Deal found 21/2$2,262
Thu 24/420:45SYD - ONT
2 stops44h 14mQatar Airways
Thu 8/511:46ONT - SYD
2 stops36h 24mQatar Airways
Deal found 20/2$3,617

Find flights to Ontario within your budget

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 21 February 2025.

Fly from

Sydney

Route

Depart

Return

Price

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 7/3

11:50-22:45

2 stops29h 55m

Ontario

Fri 14/3

13:40-09:15

2 stops49h 35m

$1,348

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 27/4

21:40-21:50

1 stop17h 10m

Ontario

Fri 2/5

09:45-19:45

1 stop41h 00m

$1,579

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 27/4

22:10-18:00

1 stop36h 50m

Ontario

Thu 1/5

00:10-10:45

1 stop41h 35m

$1,834

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sat 14/6

18:10-18:00

2 stops40h 50m

Ontario

Fri 27/6

00:10-10:45

1 stop41h 35m

$2,262

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 24/4

20:45-23:59

2 stops44h 14m

Ontario

Thu 8/5

11:46-17:10

2 stops36h 24m

$3,617

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sat 26/4

09:20-17:56

2 stops25h 36m

Ontario

Fri 23/5

06:00-07:20

3 stops32h 20m

$4,391

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 27/2

11:50-21:59

1 stop29h 09m

$814

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 13/3

11:50-21:59

1 stop28h 09m

$818

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 21/4

16:20-21:50

1 stop22h 30m

$1,018

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 20/5

21:40-21:55

1 stop17h 15m

$1,021

Flights are sorted by cheapest return flights first.

Deals found on 20/2

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.

Travel insights for flights to Ontario

Get recent, data-driven insights about flights to Ontario including ideal travel times, pricing trends, and more.

How long is the flight to Ontario?

On average, a flight from Sydney to Ontario takes 16 hours 39 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 $736

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 21 February 2025.
Read through reviews of airlines servicing Ontario, such as Japan Airlines, China Airlines and Hawaiian Airlines. 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

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Crew

8.7

Food

7.7

Overall

8.3

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

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Crew

8.7

Food

7.7

Overall

8.3

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
725 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Crew

8.7

Food

7.7

Overall

8.3

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
2,315 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Crew

8.7

Food

7.7

Overall

8.3

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
3,609 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Crew

8.7

Food

7.7

Overall

8.3

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.

United Airlines
7.4
Good
8,765 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Crew

8.7

Food

7.7

Overall

8.3

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.

  • 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, Brisbane offers the quickest one-way flight (16 hours 14 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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Users can book flights with no change fees policies with our dedicated filters. Book flights to Ontario flexibly with Cheapflights today.

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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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