Find flights
Airlines
Travel Guide

$715+ Cheap flights to Ontario

— ONT
12 Oct — 19 Oct1
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

Thu 10/920:45 -
1 stop18h 25m
Wed 23/909:31 -
1 stop40h 19m
Deal found 9/9$1,180
Thu 8/1011:20 -
1 stop18h 58m
Wed 21/1016:03 -
1 stop21h 52m
Deal found 11/9$1,184
Thu 8/1011:20 -
1 stop18h 58m
Wed 21/1016:03 -
1 stop21h 52m
Deal found 12/9$1,194
Wed 23/910:20 -
1 stop18h 52m
Sun 18/1016:03 -
1 stop21h 52m
Deal found 10/9$1,197
Mon 14/910:20 -
1 stop18h 52m
Tue 29/916:03 -
1 stop21h 52m
Deal found 8/9$1,199
Mon 21/910:20 -
1 stop29h 31m
Tue 13/1011:10 -
1 stop26h 45m
Deal found 9/9$1,201

Find flight deals to Ontario

Return from

$859

One-way from

$715

Popular in

December

Cheapest in

August

Average price

$1,106
Fiji Airways
  • Fiji Airways
  • 11/10-25/10
  • 2 total stops
  • 45h 20m total
  • Sydney to Los Angeles
Search Deals
Delta
  • Delta
  • 23/9-31/12
  • 2 total stops
  • 31h 32m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($89 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Wed 2/12

11:50-09:38

1 stop16h 48m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$756

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Thu 3/12

11:50-21:11

2 stops28h 21m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$756

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Wed 23/9

10:20-20:01

1 stop26h 41m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$756

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 16/11

11:50-12:33

2 stops43h 43m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$756

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 9/11

11:50-15:33

1 stop22h 43m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$757

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 16/2

11:50-20:20

2 stops27h 30m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$757

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Thu 22/10

11:20-17:36

1 stop24h 16m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$757

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 21/9

10:20-20:01

1 stop26h 41m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$760

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Thu 29/10

11:50-12:29

1 stop18h 39m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$760

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 28/9

10:20-17:51

1 stop24h 31m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$760

Flights are sorted by cheapest return flights first.

Deals found on 12/9

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

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

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
10,207 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.7

Overall

7.4

Boarding

7.7

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
10,207 reviews
United Airlines
7.4
Good
10,207 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.7

Overall

7.4

Boarding

7.7

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 18 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

Browse thousands of different options on Cheapflights for your next trip

Search flights to Ontario by cabin class

First Class flights to Ontario
Business Class flights to Ontario
Prem Economy Class flights to Ontario
Economy Class flights to Ontario

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.