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HK$3,357+ 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 28-1. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
27 Jan — 3 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to Ontario in 2025

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 December 2025.

Tue 30-1210:35HKG - ONT
1 stop28h 06mUnited Airlines
Tue 27-106:00ONT - HKG
1 stop21h 20mUnited Airlines
Deal found 28-12HK$4,849
Mon 29-1222:30HKG - ONT
1 stop16h 11mLufthansa
Mon 12-118:39ONT - HKG
1 stop32h 41mLufthansa
Deal found 27-12HK$4,996
Tue 30-1210:35HKG - ONT
1 stop15h 26mUnited Airlines
Wed 28-106:00ONT - HKG
1 stop21h 20mUnited Airlines
Deal found 26-12HK$6,543
Sun 28-1222:30HKG - ONT
1 stop16h 11mUnited Airlines
Mon 29-1206:00ONT - HKG
1 stop21h 20mUnited Airlines
Deal found 27-12HK$6,799
Sat 27-1210:35HKG - ONT
1 stop15h 24mUnited Airlines
Sat 3-118:39ONT - HKG
1 stop20h 06mUnited Airlines
Deal found 26-12HK$7,149
Mon 29-1200:05HKG - ONT
2 stops33h 38mUnited Airlines
Mon 26-113:53ONT - HKG
1 stop24h 52mUnited Airlines
Deal found 25-12HK$7,327
Mon 29-1211:10HKG - ONT
1 stop21h 40mChina Airlines
Mon 12-122:50ONT - HKG
1 stop18h 25mChina Airlines
Deal found 28-12HK$8,656
Tue 30-1218:05HKG - ONT
2 stops59h 47mQatar Airways
Tue 27-115:09ONT - HKG
2 stops38h 31mQatar Airways
Deal found 26-12HK$15,494
Tue 30-1218:05HKG - ONT
2 stops59h 47mQatar Airways
Wed 28-110:58ONT - HKG
2 stops35h 52mQatar Airways
Deal found 27-12HK$15,595
Mon 29-1200:25HKG - ONT
2 stops39h 49mQatar Airways
Mon 26-115:09ONT - HKG
2 stops38h 31mQatar Airways
Deal found 27-12HK$16,123

Find flight deals to Ontario

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 70,647 searches and data was last updated on 28 December 2025.

Return from

HK$4,802

One-way from

HK$3,357

Popular in

January

Cheapest in

November

Average price

HK$7,180
Air Canada
  • Air Canada
  • 10-2-17-2
  • 2 total stops
  • 69h 29m total
  • Hong Kong to Los Angeles
Search Deals
星宇航空
  • 星宇航空
  • 28-1
  • 1 total stop
  • 20h 35m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (HK$558 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$138 potential savings vs. average return price).
Search Deals
Average for return flights in December 2025
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 28 December 2025.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 16-1

22:30-12:47

2 stops30h 17m

Ontario

Mon 26-1

06:00-06:45

1 stop32h 45m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 29-1

22:30-22:53

1 stop16h 23m

Ontario

Sat 28-2

06:10-19:20

1 stop21h 10m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 2-3

10:35-12:43

2 stops42h 08m

Ontario

Fri 20-3

06:00-19:20

1 stop22h 20m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 20-1

22:30-12:47

2 stops30h 17m

Ontario

Sat 24-1

05:05-06:45

2 stops33h 40m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 17-1

10:35-20:58

2 stops26h 23m

Ontario

Sat 24-1

06:00-19:20

1 stop21h 20m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 12-2

10:35-20:50

2 stops26h 15m

Ontario

Mon 23-2

06:10-19:20

1 stop21h 10m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 24-1

10:35-20:58

2 stops26h 23m

Ontario

Wed 11-2

05:05-06:45

2 stops33h 40m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 5-2

10:35-20:58

2 stops26h 23m

Ontario

Fri 20-2

06:10-19:20

1 stop21h 10m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 11-2

22:30-12:38

1 stop30h 08m

Ontario

Wed 18-2

05:00-06:45

2 stops33h 45m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 9-3

22:30-20:50

2 stops37h 20m

Ontario

Mon 16-3

06:00-05:45

1 stop32h 45m

HK$4,849

Flights are sorted by cheapest return flights first.

Deals found on 27-12

Showing 1-10 of 20 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 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 28 December 2025.
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
793 reviews
Check prices

Overall

8.3

Food

7.8

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Crew

8.5

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
793 reviews
China Airlines
8.3
Very Good
793 reviews
Check prices

Overall

8.3

Food

7.8

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Crew

8.5

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.

  • 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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