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HK$4,159+ 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 22-11. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
14 Sep — 21 Sep1
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 15 August 2026.

Fri 16-1011:45 -
1 stop18h 37m
Fri 16-1018:32 -
1 stop19h 28m
Deal found 12-8HK$7,078
Thu 3-911:45 -
1 stop21h 26m
Wed 16-909:01 -
1 stop18h 54m
Deal found 15-8HK$7,085
Wed 16-922:30 -
1 stop36h 31m
Sun 20-919:13 -
1 stop32h 42m
Deal found 13-8HK$7,117
Fri 16-1011:45 -
1 stop20h 51m
Mon 2-1118:37 -
1 stop20h 08m
Deal found 14-8HK$7,187
Mon 26-1010:35 -
1 stop19h 58m
Tue 10-1113:29 -
2 stops25h 16m
Deal found 14-8HK$7,219
Thu 3-914:05 -
1 stop19h 35m
Tue 15-900:10 -
1 stop18h 05m
Deal found 12-8HK$7,250
Mon 28-911:45 -
1 stop18h 37m
Mon 5-1006:07 -
1 stop21h 48m
Deal found 14-8HK$7,368

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 70,647 searches and data was last updated on 15 August 2026.

Return from

HK$5,602

One-way from

HK$3,656

Popular in

July

Cheapest in

November

Average price

HK$7,886
Air Canada
  • Air Canada
  • 11-9-17-9
  • 3 total stops
  • 43h 50m total
  • Hong Kong to Los Angeles
Search Deals
9-9
  • 9-9
  • 2 total stops
  • 37h 16m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (HK$1,020 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$177 potential savings vs. average return price).
Search Deals
Average for return flights in August 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 70,647 searches and data was last updated on 15 August 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Departure

Return

Price

Cheapest return flight

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Fri 16-10

11:45-15:22

1 stop18h 37m

Ontario

Fri 16-10

18:32-05:00

1 stop19h 28m

HK$7,078

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Mon 5-10

11:45-15:22

1 stop18h 37m

Ontario

Fri 9-10

06:00-18:55

1 stop21h 55m

HK$7,117

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Tue 1-9

22:30-12:12

1 stop28h 42m

Ontario

Thu 3-9

19:13-05:00

1 stop18h 47m

HK$7,117

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sat 17-10

11:45-15:22

1 stop18h 37m

Ontario

Sun 25-10

09:25-19:20

1 stop18h 55m

HK$7,117

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Wed 30-9

11:45-15:22

1 stop18h 37m

Ontario

Thu 1-10

16:03-05:00

1 stop21h 57m

HK$7,117

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Mon 12-10

11:45-15:22

1 stop18h 37m

Ontario

Tue 20-10

16:03-05:00

1 stop21h 57m

HK$7,117

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Mon 28-9

22:30-17:41

1 stop34h 11m

Ontario

Mon 5-10

05:00-18:55

2 stops46h 55m

HK$7,117

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sat 5-9

11:45-15:41

1 stop18h 56m

Ontario

Sat 12-9

06:08-18:55

1 stop21h 47m

HK$7,117

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Wed 16-9

11:45-12:50

2 stops40h 05m

Ontario

Sun 20-9

13:53-05:00

1 stop24h 07m

HK$7,117
Fastest return journey

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Mon 7-9

14:05-18:40

1 stop19h 35m

Ontario

Thu 10-9

00:45-09:15

1 stop17h 30m

HK$7,439

Flights are sorted by cheapest return flights first.

Deals found on 12-8

Showing 1-10 of 18 resultsSorted by cheapest first
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 Hong Kong to Ontario is China 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 15 August 2026.
Get a feel of what it's like to fly with China Airlines to the United States by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very Good
841 reviews
Check prices

Comfort

8.0

Overall

8.3

Crew

8.5

Food

7.8

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
China Airlines
8.3
Very Good
841 reviews
China Airlines
8.3
Very Good
841 reviews
Check prices

Comfort

8.0

Overall

8.3

Crew

8.5

Food

7.8

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.

FAQs about flying to Ontario

  • What airport do you fly into for flights to Ontario?

    For a flight to Ontario, you will be flying into Ontario. Ontario (ONT) is just 4.9 km from the centre of the city.

  • 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, China Airlines is rated the highest out of the airlines that fly to Ontario.

  • What is the cheapest airport to fly to in Ontario?

    Ontario is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario typically cost HK$479, while return flights cost around HK$1,777.

  • How much is a return flight to Ontario?

    A return flight to Ontario will typically cost around HK$1,777, however they can be found for as little as HK$1,777.

  • Does Ontario have rental cars?

    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?

Deals for Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

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?

Certainly. Search results for flights to Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Ontario flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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