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$776+ 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 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
29 Mar — 5 Apr1
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 27 February 2026.

Thu 13/820:45
SYD
-
ONT
1 stop18h 02m
Multiple Airlines
Fri 21/808:00
ONT
-
SYD
1 stop17h 50m
Multiple Airlines
Deal found 23/2$1,257
Tue 10/321:40
SYD
-
ONT
1 stop17h 15m
Multiple Airlines
Tue 17/308:45
ONT
-
SYD
1 stop41h 00m
Multiple Airlines
Deal found 24/2$1,355
Mon 2/312:10
SYD
-
ONT
1 stop19h 28m
United Airlines
Mon 9/318:37
ONT
-
SYD
1 stop20h 38m
United Airlines
Deal found 25/2$1,393
Thu 26/212:10
SYD
-
ONT
1 stop19h 28m
United Airlines
Wed 11/318:37
ONT
-
SYD
1 stop17h 43m
United Airlines
Deal found 23/2$1,395
Tue 24/214:00
SYD
-
ONT
1 stop17h 38m
United Airlines
Mon 9/318:37
ONT
-
SYD
1 stop20h 38m
United Airlines
Deal found 23/2$1,396
Mon 15/610:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Mon 22/618:39
ONT
-
SYD
1 stop19h 16m
United Airlines
Deal found 26/2$1,400
Thu 5/312:10
SYD
-
ONT
1 stop19h 08m
United Airlines
Wed 22/418:49
ONT
-
SYD
1 stop19h 06m
United Airlines
Deal found 27/2$1,403
Fri 15/520:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Sun 24/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 24/2$1,409
Fri 1/520:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Mon 28/908:00
ONT
-
SYD
1 stop17h 50m
Multiple Airlines
Deal found 26/2$1,423
Sun 7/620:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Fri 12/609:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 23/2$1,431

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 27 February 2026.

Return from

$1,082

One-way from

$776

Popular in

December

Cheapest in

August

Average price

$1,082
Fiji Airways
  • Fiji Airways
  • 30/7-4/8
  • 2 total stops
  • 53h 20m total
  • Sydney to Los Angeles
Search Deals
Hawaiian Airlines
  • Hawaiian Airlines
  • 26/3
  • 1 total stop
  • 19h 19m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($96 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average return price).
Search Deals
Average for return flights in February 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 27 February 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Depart

Return

Price

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 13/8

10:20-12:20

1 stop19h 00m

Ontario

Mon 7/9

18:53-06:55

1 stop19h 02m

$1,393

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 10/3

12:10-12:18

1 stop18h 08m

Ontario

Wed 15/4

13:27-06:55

1 stop24h 28m

$1,395

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 14/5

10:20-17:52

1 stop24h 32m

Ontario

Sun 7/6

18:39-06:55

1 stop19h 16m

$1,395

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 15/4

10:20-17:47

1 stop24h 27m

Ontario

Tue 21/4

13:34-06:55

2 stops48h 21m

$1,403

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 4/5

10:20-12:22

1 stop19h 02m

Ontario

Thu 4/6

18:39-06:55

1 stop19h 16m

$1,442

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 10/3

12:10-12:18

1 stop18h 08m

Ontario

Fri 10/4

18:45-06:55

1 stop19h 10m

$1,445

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 2/4

11:20-22:45

1 stop29h 25m

Ontario

Thu 9/4

06:00-06:55

1 stop31h 55m

$2,081

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 5/8

18:30-18:40

2 stops41h 10m

Ontario

Tue 18/8

00:45-10:45

1 stop41h 00m

$2,106

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 6/4

10:20-22:45

1 stop29h 25m

Ontario

Wed 29/4

11:05-06:55

1 stop26h 50m

$2,169

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 8/4

10:20-12:20

1 stop19h 00m

Ontario

Thu 16/4

18:49-06:55

1 stop19h 06m

$2,276

Flights are sorted by cheapest return flights first.

Deals found on 25/2

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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

What are the cheapest airlines that fly to Ontario?

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

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 27 February 2026.
Read reviews from past customers who have flown United Airlines to the United States. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,349 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,349 reviews
United Airlines
7.4
Good
9,349 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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, Brisbane offers the quickest one-way flight (16 hours 11 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.

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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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