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HK$3,400+ 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 19-10. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
27 Aug — 3 Sep1
1 adult

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 22 August 2025.

Return from

HK$5,728

One-way from

HK$3,400

Popular in

August

Cheapest in

June

Average price

HK$8,159
EVA Air
  • EVA Air
  • 27-9-12-10
  • 3 total stops
  • 43h 43m total
  • Hong Kong to Los Angeles
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星宇航空
  • 星宇航空
  • 19-10
  • 1 total stop
  • 35h 55m total
  • Hong Kong to Ontario
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Highest demand for flights based on searches. 6% potential increase in price (HK$4,083 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (HK$763 potential savings vs. average return price).
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Average for return flights in August 2025
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Find flight deals to Ontario

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 22 August 2025.

Mon 1-911:15HKG - ONT
1 stop15h 58mUnited Airlines
Sun 14-918:50ONT - HKG
1 stop19h 10mUnited Airlines
Deal found 20-8HK$5,392
Fri 17-1011:20HKG - ONT
1 stop20h 45m星宇航空
Sat 24-121:45ONT - HKG
1 stop20h 25m星宇航空
Deal found 22-8HK$5,447
Mon 6-1011:20HKG - ONT
1 stop20h 45m星宇航空
Mon 13-1023:10ONT - HKG
1 stop28h 45m星宇航空
Deal found 22-8HK$5,455
Mon 1-917:30HKG - ONT
1 stop16h 10mChina Airlines
Sat 13-900:45ONT - HKG
1 stop17h 30mChina Airlines
Deal found 20-8HK$5,619
Wed 1-1011:20HKG - ONT
1 stop20h 45m星宇航空
Fri 31-1022:45ONT - HKG
1 stop28h 45m星宇航空
Deal found 20-8HK$5,627
Sat 13-917:30HKG - ONT
1 stop16h 10mChina Airlines
Sun 28-900:10ONT - HKG
1 stop18h 05mChina Airlines
Deal found 21-8HK$5,689
Thu 23-1017:30HKG - ONT
1 stop15h 30mChina Airlines
Tue 28-1023:50ONT - HKG
1 stop18h 25mChina Airlines
Deal found 20-8HK$5,697
Wed 5-1111:15HKG - ONT
1 stop21h 15m星宇航空
Wed 12-1121:45ONT - HKG
1 stop28h 45m星宇航空
Deal found 20-8HK$5,705
Mon 3-1121:10HKG - ONT
1 stop35h 40mChina Airlines
Fri 28-1122:50ONT - HKG
1 stop25h 45mChina Airlines
Deal found 21-8HK$5,713
Fri 31-1017:35HKG - ONT
1 stop15h 15mChina Airlines
Sun 14-1222:50ONT - HKG
1 stop18h 25mChina Airlines
Deal found 20-8HK$5,728
Mon 1-911:20HKG - ONT
1 stop20h 45m星宇航空
Fri 12-923:10ONT - HKG
1 stop28h 45m星宇航空
Deal found 22-8HK$5,736

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 22 August 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 1-9

11:15-12:13

1 stop15h 58m

Ontario

Sun 14-9

18:50-05:00

1 stop19h 10m

HK$5,392

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 17-10

11:20-17:05

1 stop20h 45m

Ontario

Sat 24-1

21:45-10:10

1 stop20h 25m

HK$5,447

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 6-10

11:20-17:05

1 stop20h 45m

Ontario

Mon 13-10

23:10-18:55

1 stop28h 45m

HK$5,455

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 15-9

11:15-12:13

1 stop15h 58m

Ontario

Mon 29-9

18:36-05:00

1 stop19h 24m

HK$5,502

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 1-9

17:30-18:40

1 stop16h 10m

Ontario

Sat 13-9

00:45-09:15

1 stop17h 30m

HK$5,619

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 26-9

20:10-17:05

1 stop35h 55m

Ontario

Wed 1-10

23:10-18:55

1 stop28h 45m

HK$5,619

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 1-10

11:20-17:05

1 stop20h 45m

Ontario

Fri 31-10

22:45-18:30

1 stop28h 45m

HK$5,627

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 13-9

17:30-18:40

1 stop16h 10m

Ontario

Sun 28-9

00:10-09:15

1 stop18h 05m

HK$5,689

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 26-9

14:00-18:00

1 stop19h 00m

Ontario

Tue 30-9

00:10-09:15

1 stop18h 05m

HK$5,689

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 23-10

17:30-18:00

1 stop15h 30m

Ontario

Tue 28-10

23:50-09:15

1 stop18h 25m

HK$5,697

Flights are sorted by cheapest return flights first.

Deals found on 21-8

Showing 1-10 of 22 results
1
2
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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 22 August 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
764 reviews
Check prices

Boarding

8.3

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Comfort

8.0

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
764 reviews
China Airlines
8.3
Very Good
764 reviews
Check prices

Boarding

8.3

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Comfort

8.0

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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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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