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HK$3,370+ 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 21-1. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
30 Dec — 6 Jan1
1 adult
1 adult, Economy, 0 bags

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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 30 November 2025.

Fri 28-1110:35HKG - ONT
2 stops26h 09mUnited Airlines
Fri 5-1205:05ONT - HKG
2 stops33h 40mUnited Airlines
Deal found 27-11HK$4,849
Sun 28-1222:30HKG - ONT
2 stops38h 37mUnited Airlines
Sun 4-106:00ONT - HKG
1 stop32h 45mUnited Airlines
Deal found 27-11HK$4,857
Wed 3-1211:15HKG - ONT
1 stop20h 35m星宇航空
Wed 10-1221:45ONT - HKG
1 stop20h 25m星宇航空
Deal found 27-11HK$5,573
Thu 25-1219:45HKG - ONT
1 stop36h 05m星宇航空
Wed 7-121:45ONT - HKG
1 stop28h 45m星宇航空
Deal found 27-11HK$5,689
Wed 3-1214:20HKG - ONT
2 stops37h 58mUnited Airlines
Wed 10-1206:00ONT - HKG
2 stops38h 55mUnited Airlines
Deal found 27-11HK$5,783
Tue 23-1222:30HKG - ONT
1 stop16h 11mUnited Airlines
Mon 5-118:39ONT - HKG
1 stop20h 06mUnited Airlines
Deal found 28-11HK$6,553
Thu 25-1210:35HKG - ONT
1 stop23h 16mLufthansa
Wed 7-106:00ONT - HKG
1 stop21h 20mLufthansa
Deal found 29-11HK$6,888
Thu 25-1217:35HKG - ONT
1 stop15h 15mChina Airlines
Wed 7-122:50ONT - HKG
1 stop19h 20mChina Airlines
Deal found 29-11HK$6,981
Fri 5-1211:10HKG - ONT
1 stop21h 40mChina Airlines
Thu 11-1222:50ONT - HKG
1 stop19h 20mChina Airlines
Deal found 29-11HK$6,997

Flights to Ontario in 2025

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 30 November 2025.

Return from

HK$4,802

One-way from

HK$3,370

Popular in

January

Cheapest in

October

Average price

HK$6,203
Air Canada
  • Air Canada
  • 17-1-29-1
  • 2 total stops
  • 51h 33m total
  • Hong Kong to Los Angeles
Search Deals
星宇航空
  • 星宇航空
  • 22-2
  • 1 total stop
  • 36h 05m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (HK$737 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (HK$121 potential savings vs. average return price).
Search Deals
Average for return flights in November 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 30 November 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

Mon 9-2

10:35-17:43

1 stop23h 08m

Ontario

Thu 12-2

05:00-19:20

2 stops46h 20m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 1-3

22:30-17:41

1 stop35h 11m

Ontario

Sun 8-3

06:00-05:45

1 stop32h 45m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 14-1

10:35-20:58

2 stops26h 23m

Ontario

Sun 18-1

05:05-06:45

2 stops33h 40m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 22-4

22:30-20:46

2 stops37h 16m

Ontario

Wed 29-4

06:00-18:55

1 stop21h 55m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 19-1

22:30-12:47

2 stops30h 17m

Ontario

Fri 23-1

05:05-06:45

2 stops33h 40m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 24-1

22:30-11:18

1 stop28h 48m

Ontario

Sat 31-1

05:05-06:45

2 stops33h 40m

HK$4,849

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 5-3

22:30-20:50

2 stops38h 20m

Ontario

Fri 13-3

13:50-19:20

2 stops38h 30m

HK$4,857

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 19-1

22:30-12:47

2 stops30h 17m

Ontario

Sat 31-1

13:53-06:45

1 stop24h 52m

HK$4,857

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 28-12

22:30-21:07

2 stops38h 37m

Ontario

Sun 4-1

06:00-06:45

1 stop32h 45m

HK$4,857

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 21-1

11:15-15:50

1 stop20h 35m

HK$3,370

Flights are sorted by cheapest return flights first.

Deals found on 27-11

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 30 November 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
783 reviews
Check prices

Entertainment

8.0

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.3
Very Good
783 reviews
China Airlines
8.3
Very Good
783 reviews
Check prices

Entertainment

8.0

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

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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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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