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$865+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
27 Feb — 6 Mar1
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 28 January 2026.

Thu 5/221:40
SYD
-
ONT
1 stop19h 48m
Hawaiian Airlines
Tue 10/208:13
ONT
-
SYD
1 stop40h 32m
Hawaiian Airlines
Deal found 25/1$1,419
Thu 14/520:45
SYD
-
ONT
1 stop18h 22m
Multiple Airlines
Tue 19/516:03
ONT
-
SYD
2 stops33h 47m
Multiple Airlines
Deal found 26/1$1,506
Thu 5/213:05
SYD
-
ONT
2 stops28h 23m
Multiple Airlines
Tue 10/208:13
ONT
-
SYD
1 stop40h 32m
Multiple Airlines
Deal found 25/1$1,510
Tue 3/221:40
SYD
-
ONT
1 stop19h 48m
Multiple Airlines
Wed 11/208:13
ONT
-
SYD
1 stop40h 32m
Multiple Airlines
Deal found 24/1$1,524
Sun 23/820:45
SYD
-
ONT
1 stop17h 43m
Multiple Airlines
Thu 3/908:00
ONT
-
SYD
1 stop17h 50m
Multiple Airlines
Deal found 27/1$1,529
Mon 26/112:10
SYD
-
ONT
1 stop18h 08m
United Airlines
Sun 8/213:53
ONT
-
SYD
1 stop21h 27m
United Airlines
Deal found 24/1$1,530
Wed 18/312:10
SYD
-
ONT
1 stop18h 08m
United Airlines
Wed 8/413:34
ONT
-
SYD
2 stops24h 21m
United Airlines
Deal found 26/1$1,542
Wed 25/211:50
SYD
-
ONT
1 stop29h 09m
United Airlines
Wed 4/306:09
ONT
-
SYD
1 stop29h 11m
United Airlines
Deal found 25/1$1,543

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 28 January 2026.

Return from

$1,000

One-way from

$865

Popular in

December

Cheapest in

August

Average price

$1,236
Fiji Airways
  • Fiji Airways
  • 1/2-15/2
  • 2 total stops
  • 44h 00m total
  • Sydney to Los Angeles
Search Deals
United Airlines
  • United Airlines
  • 7/4
  • 1 total stop
  • 24h 42m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($104 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average return price).
Search Deals
Average for return flights in January 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 28 January 2026.
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

Wed 25/2

11:50-21:59

1 stop29h 09m

Ontario

Wed 4/3

06:09-06:20

1 stop29h 11m

$1,543

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 2/3

12:10-12:38

1 stop19h 28m

Ontario

Wed 25/3

13:50-06:20

2 stops22h 30m

$1,543

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 1/5

20:45-21:10

1 stop17h 25m

Ontario

Thu 14/5

16:03-18:50

2 stops33h 47m

$1,546

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 30/4

20:45-21:10

1 stop17h 25m

Ontario

Thu 14/5

16:03-18:50

2 stops33h 47m

$1,546

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 26/2

11:50-21:59

1 stop29h 09m

Ontario

Thu 5/3

06:00-07:00

1 stop30h 00m

$1,590

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 2/3

12:10-12:38

1 stop19h 28m

Ontario

Fri 13/3

13:50-06:20

2 stops22h 30m

$1,592

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 6/4

10:20-22:45

1 stop29h 25m

Ontario

Thu 30/4

13:30-06:55

1 stop24h 25m

$1,592

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 23/4

10:20-09:56

1 stop16h 36m

Ontario

Fri 8/5

18:59-06:55

1 stop18h 56m

$1,596

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 7/7

20:45-11:19

2 stops31h 34m

Ontario

Thu 6/8

07:50-18:50

1 stop18h 00m

$1,598

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 9/7

20:45-09:51

2 stops30h 06m

Ontario

Thu 6/8

07:50-18:50

1 stop18h 00m

$1,598

Flights are sorted by cheapest return flights first.

Deals found on 27/1

Showing 1-10 of 18 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

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 28 January 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
9,210 reviews
Check prices

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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
9,210 reviews
United Airlines
7.4
Good
9,210 reviews
Check prices

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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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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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