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$389+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HKG
nov. 22 — nov. 291
sáb. 11/22
sáb. 11/29
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 octubre 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$717
(SmartFares)

One-way from

$389
(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 octubre 23, 2025.

This Delta deal was found by Cheapflights users on 10/23. 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.
dom. 10/267:35 amONT - HKG
2 stops24h 35mDelta
mié. 11/512:55 amHKG - ONT
2 stops37h 46mDelta
Deal found 10/23$729
This Korean Air deal was found by Cheapflights users on 10/23. 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.
lun. 10/277:35 amONT - HKG
2 stops24h 35mKorean Air
mié. 11/1212:35 pmHKG - ONT
2 stops50h 20mKorean Air
Deal found 10/23$733
This Delta deal was found by Cheapflights users on 10/23. 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.
sáb. 10/255:50 pmONT - HKG
2 stops38h 20mDelta
jue. 11/1312:35 pmHKG - ONT
2 stops26h 20mDelta
Deal found 10/23$735
This flugladen.de deal was found by Cheapflights users on 10/21. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/2710:45 pmONT - HKG
1 stop20h 45mMultiple Airlines
mié. 10/294:35 pmHKG - ONT
1 stop15h 15mMultiple Airlines
Deal found 10/21$775
This oojo deal was found by Cheapflights users on 10/23. 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.
lun. 11/39:45 pmONT - HKG
1 stop30h 55mMultiple Airlines
jue. 11/136:50 pmHKG - ONT
1 stop37h 00mMultiple Airlines
Deal found 10/23$777
This Delta deal was found by Cheapflights users on 10/22. 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.
dom. 10/267:35 amONT - HKG
2 stops24h 35mDelta
jue. 11/612:55 amHKG - ONT
2 stops37h 46mDelta
Deal found 10/22$778
This oojo deal was found by Cheapflights users on 10/23. 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.
lun. 11/39:45 pmONT - HKG
1 stop30h 55mMultiple Airlines
vie. 11/141:40 pmHKG - ONT
1 stop18h 10mMultiple Airlines
Deal found 10/23$779
This oojo deal was found by Cheapflights users on 10/21. 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.
vie. 10/2411:10 pmONT - HKG
1 stop20h 20mMultiple Airlines
sáb. 11/151:40 pmHKG - ONT
1 stop18h 50mMultiple Airlines
Deal found 10/21$780
This oojo deal was found by Cheapflights users on 10/21. 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.
vie. 10/2411:10 pmONT - HKG
1 stop20h 20mMultiple Airlines
sáb. 11/84:35 pmHKG - ONT
1 stop15h 55mMultiple Airlines
Deal found 10/21$781
This Korean Air deal was found by Cheapflights users on 10/23. 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.
lun. 10/277:35 amONT - HKG
2 stops24h 35mKorean Air
jue. 11/136:10 pmHKG - ONT
2 stops44h 45mKorean Air
Deal found 10/23$782
This Delta deal was found by Cheapflights users on 10/22. 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.
sáb. 10/2511:48 amONT - HKG
2 stops44h 22mDelta
jue. 11/612:55 amHKG - ONT
2 stops37h 46mDelta
Deal found 10/22$784

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 octubre 23, 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

lun. 2/16

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

mié. 5/20

12:20 pm-10:40 pm

2 stops25h 20m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

jue. 2/19

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

jue. 5/21

12:20 pm-10:40 pm

2 stops25h 20m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

mié. 2/18

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

sáb. 5/23

12:45 am-11:44 pm

2 stops37h 59m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

lun. 11/24

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

dom. 12/7

12:35 pm-10:47 pm

2 stops26h 12m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

mar. 2/17

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

jue. 5/21

12:20 pm-10:40 pm

2 stops25h 20m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

dom. 2/15

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

mar. 5/19

12:20 pm-10:40 pm

2 stops25h 20m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

lun. 2/16

6:00 am-11:10 pm

2 stops25h 10m

Hong Kong Intl

jue. 5/14

12:20 pm-10:40 pm

2 stops25h 20m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

mié. 2/18

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

dom. 5/17

12:45 am-11:44 pm

2 stops37h 59m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

lun. 2/16

6:45 am-11:10 pm

2 stops24h 25m

Hong Kong Intl

dom. 5/17

12:45 am-10:40 pm

2 stops36h 55m

$729

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

dom. 1/4

6:38 am-11:10 pm

2 stops24h 32m

Hong Kong Intl

mar. 5/19

12:45 am-10:40 pm

2 stops36h 55m

$729

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 24 results
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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 17, 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 octubre 23, 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 octubre 23, 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
8.2
Very good
774 reviews

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Crew

8.5

Food

7.8

Overall

8.2

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
8.2
Very good
774 reviews
China Airlines
8.2
Very good
774 reviews

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Crew

8.5

Food

7.8

Overall

8.2

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
1,036 reviews
China Airlines
8.2
Very good
774 reviews

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Crew

8.5

Food

7.8

Overall

8.2

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
8,991 reviews
China Airlines
8.2
Very good
774 reviews

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Crew

8.5

Food

7.8

Overall

8.2

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.

See more FAQs

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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 octubre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$841Average$941FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$908Average$1,218FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$928Average$1,216FlexibilityNo cancel feeOn-time72%

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