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$401+ Cheap flights from Ontario (ONT) to Hong Kong

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HKG
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Hong Kong are usually found in August or September, booked 12 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from Ontario to Hong Kong

Keep the following information in mind while searching for Ontario to Hong Kong flight deals. Data was last updated October 29, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$702
(lol.travel)

One-way from

$401
(SmartFares)

Popular in

December

Cheapest in

August

Average price

$886
Provider with most accurate pricing for Los Angeles-Hong Kong Intl flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Hong Kong Intl flights.
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From Ontario to Hong Kong
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One-way flight from Ontario to Hong Kong
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Highest demand for flights based on searches. 11% potential increase in price ($132 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Hong Kong

Cheapest flights from Ontario to Hong Kong
Explore the most affordable flight options available from Ontario to Hong Kong. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:45 amONT - HKG
2 stops24h 25mDelta
Wed 11/2612:55 amHKG - ONT
2 stops33h 23mDelta
Deal found 10/28$729
This Korean Air deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:45 amONT - HKG
2 stops24h 25mKorean Air
Wed 11/2612:55 amHKG - ONT
2 stops33h 23mKorean Air
Deal found 10/28$733
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:40 amONT - HKG
2 stops24h 30mDelta
Fri 12/512:35 pmHKG - ONT
2 stops26h 12mDelta
Deal found 10/28$778
This oojo deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:45 pmONT - HKG
1 stop29h 20mMultiple Airlines
Sat 11/154:35 pmHKG - ONT
1 stop15h 15mMultiple Airlines
Deal found 10/27$779
This oojo deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/269:45 pmONT - HKG
1 stop31h 50mMultiple Airlines
Fri 12/264:35 pmHKG - ONT
1 stop15h 15mMultiple Airlines
Deal found 10/29$781
This Korean Air deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:45 amONT - HKG
2 stops24h 25mKorean Air
Thu 11/2712:55 amHKG - ONT
2 stops33h 23mKorean Air
Deal found 10/28$782
This oojo deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:45 pmONT - HKG
1 stop20h 45mMultiple Airlines
Mon 12/294:35 pmHKG - ONT
1 stop15h 15mMultiple Airlines
Deal found 10/27$803
This Priceline deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:45 pmONT - HKG
1 stop23h 15mMultiple Airlines
Mon 11/171:40 pmHKG - ONT
1 stop18h 10mMultiple Airlines
Deal found 10/29$815
This Trip.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/129:45 pmONT - HKG
1 stop23h 15mMultiple Airlines
Sat 11/222:00 pmHKG - ONT
1 stop17h 50mMultiple Airlines
Deal found 10/28$817
This Trip.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:45 pmONT - HKG
1 stop23h 15mMultiple Airlines
Wed 12/32:00 pmHKG - ONT
1 stop17h 50mMultiple Airlines
Deal found 10/28$818
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:50 pmONT - HKG
1 stop18h 25mChina Airlines
Wed 11/55:35 pmHKG - ONT
1 stop15h 15mChina Airlines
Deal found 10/29$825
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:50 pmONT - HKG
1 stop18h 25mChina Airlines
Wed 11/55:35 pmHKG - ONT
1 stop15h 15mChina Airlines
Deal found 10/29$828

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Hong Kong that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Ontario to Hong Kong that are best for you.

Fly from

Ontario

Fly to

Hong Kong

Route

Depart

Return

Price

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Mon 11/17

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

Mon 11/24

12:55 am-10:55 pm

2 stops38h 00m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Wed 3/11

6:45 am-11:10 pm

2 stops25h 25m

Hong Kong Intl

Wed 4/1

12:20 pm-10:38 pm

2 stops25h 18m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sun 3/8

6:45 am-11:10 pm

2 stops25h 25m

Hong Kong Intl

Thu 4/2

12:20 pm-11:52 pm

2 stops26h 32m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Thu 1/15

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Sun 2/15

12:35 pm-10:38 pm

2 stops26h 03m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Mon 1/19

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Mon 2/16

12:35 pm-10:38 pm

2 stops26h 03m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Tue 3/24

6:45 am-11:10 pm

2 stops25h 25m

Hong Kong Intl

Wed 4/15

12:20 pm-10:40 pm

2 stops25h 20m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Mon 11/17

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

Tue 11/25

6:10 pm-10:55 pm

2 stops44h 45m

$733

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Tue 11/25

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

Mon 4/13

12:45 am-5:16 pm

2 stops31h 31m

$733

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Thu 11/13

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

Wed 11/26

12:55 am-6:18 pm

2 stops33h 23m

$733

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sun 11/16

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

Mon 11/24

12:55 am-10:55 pm

2 stops38h 00m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 23 results
1
2
3

Best time to book a flight from Ontario to Hong Kong

Have a flexible travel schedule? Discover the best time to fly to Hong Kong from Ontario with our price prediction graph.
Estimated round-trip 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 from Ontario to Hong Kong

How far ahead should I book a flight from Ontario to Hong Kong?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Hong Kong. Price data was last updated on October 24, 2025.

The price you pay for your flight from Ontario to Hong Kong may vary depending on when you book. For the best chance of a lower fare, look to book 12 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Ontario to Hong Kong?

Currently, September is the cheapest month in which you can book a flight from Ontario to Hong Kong (average of $599). Flying from Ontario to Hong Kong in June is currently the most expensive (average of $921). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to HK?

Find hourly flight availability from Ontario to Hong Kong. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s optimal to fly from Ontario to Hong Kong in the evening. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Hong Kong

Get insights into the airlines that provide service to Hong Kong. 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 Hong Kong. Reviews last updated October 29, 2025.
Read through reviews of airlines operating flights from Ontario to Hong Kong, such as China Airlines, Cathay Pacific, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
776 reviews

Overall

8.3

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.5

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
776 reviews
China Airlines
8.3
Very good
776 reviews

Overall

8.3

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.5

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.
Cathay Pacific
7.6
Good
1,043 reviews
China Airlines
8.3
Very good
776 reviews

Overall

8.3

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.5

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.
United Airlines
7.4
Good
8,998 reviews
China Airlines
8.3
Very good
776 reviews

Overall

8.3

Comfort

8.0

Entertainment

8.0

Food

7.8

Boarding

8.3

Crew

8.5

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.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Hong Kong. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Hong Kong?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Hong Kong.

  • How long is the flight from Ontario to Hong Kong?

    Departing from Ontario to Hong Kong will take you 24h 25m. The distance from Ontario to Hong Kong is about 7273 mi.

  • What are the cheapest airlines flying from Ontario to Hong Kong round-trip?

    According to our current data, China Airlines ($841), United Airlines ($908), and Cathay Pacific ($928) offers the cheapest pricing from Ontario to Hong Kong. Users have found that China Airlines is 20% cheaper than the other options available to this destination.

  • Can I find deals for flights from Ontario to Hong Kong that include hotel bookings?

    Yes. In addition to deals on Ontario to Hong Kong flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Hong Kong?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Hong Kong.

  • Can I find deals for business class flights from Ontario to Hong Kong?

    Yes. Cheapflights offers flight deals from Ontario to Hong Kong by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Hong Kong?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Hong Kong (average of $599). Flying from Ontario to Hong Kong in June is currently the most expensive (average of $921). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 3 airlines flying from Ontario to Hong Kong

Discover the top 3 airlines that operate flights from Ontario to Hong Kong. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$841Average$940FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$908Average$1,218FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$928Average$1,216FlexibilityNo cancel feeOn-time72%

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