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$351+ Cheap flights from Ontario (ONT) to Hong Kong (HKG)

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HKG
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Find cheap flights from Ontario to Hong Kong with Cheapflights

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Cheapflights Tip: The best prices from Ontario to Hong Kong Intl are usually found in August or September, booked 21 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from Ontario to Hong Kong

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Hong Kong (HKG). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$638
(Delta)

One-way from

$351
(SmartFares)

Popular in

December

Cheapest in

August

Average price

$938
Provider with most accurate pricing for Ontario-Hong Kong Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Hong Kong Intl flights.
Search Deals
From Ontario to Hong Kong Intl
Search Deals
One-way flight from Ontario to Hong Kong Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($66 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
Search Deals

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 November 20, 2025.

This Korean Air deal was found by Cheapflights users on 11/20. 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.
Mon 12/16:45 amONT - HKG
2 stops24h 25mKorean Air
Sat 12/1312:55 amHKG - ONT
2 stops37h 52mKorean Air
Deal found 11/20$641
This Delta deal was found by Cheapflights users on 11/18. 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.
Sun 11/304:49 pmONT - HKG
2 stops38h 21mDelta
Wed 12/312:55 amHKG - ONT
2 stops37h 52mDelta
Deal found 11/18$643
This oojo deal was found by Cheapflights users on 11/20. 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 11/249:45 pmONT - HKG
1 stop29h 20mMultiple Airlines
Tue 12/26:50 pmHKG - ONT
1 stop37h 00mMultiple Airlines
Deal found 11/20$775
This oojo deal was found by Cheapflights users on 11/20. 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 11/299:45 pmONT - HKG
1 stop30h 55mMultiple Airlines
Sun 12/146:50 pmHKG - ONT
1 stop37h 00mMultiple Airlines
Deal found 11/20$799
This Delta deal was found by Cheapflights users on 11/18. 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.
Sun 11/306:45 amONT - HKG
2 stops24h 25mDelta
Tue 12/212:55 amHKG - ONT
2 stops37h 52mDelta
Deal found 11/18$804
This Korean Air deal was found by Cheapflights users on 11/18. 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.
Sun 11/306:45 amONT - HKG
2 stops24h 25mKorean Air
Sat 12/612:55 amHKG - ONT
2 stops37h 52mKorean Air
Deal found 11/18$807
This Delta deal was found by Cheapflights users on 11/18. 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.
Wed 12/316:38 amONT - HKG
2 stops36h 42mDelta
Fri 1/166:10 pmHKG - ONT
2 stops44h 41mDelta
Deal found 11/18$809
This Delta deal was found by Cheapflights users on 11/20. 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.
Sat 11/295:49 pmONT - HKG
2 stops37h 21mDelta
Tue 12/212:55 amHKG - ONT
2 stops37h 52mDelta
Deal found 11/20$811
This Korean Air deal was found by Cheapflights users on 11/18. 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.
Wed 12/316:38 amONT - HKG
2 stops36h 42mKorean Air
Mon 1/1912:35 pmHKG - ONT
2 stops41h 21mKorean Air
Deal found 11/18$812
This oojo deal was found by Cheapflights users on 11/20. 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 11/2410:50 pmONT - HKG
1 stop19h 20mChina Airlines
Wed 11/265:35 pmHKG - ONT
1 stop15h 15mChina Airlines
Deal found 11/20$820
This oojo deal was found by Cheapflights users on 11/20. 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 11/299:45 pmONT - HKG
1 stop30h 55mMultiple Airlines
Sat 12/61:40 pmHKG - ONT
1 stop18h 10mMultiple Airlines
Deal found 11/20$822
This oojo deal was found by Cheapflights users on 11/19. 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
Sat 12/69:05 amHKG - ONT
1 stop22h 45mMultiple Airlines
Deal found 11/19$823

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 November 20, 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

Wed 1/14

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Thu 2/12

12:35 pm-10:40 pm

2 stops26h 05m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Tue 1/13

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Thu 2/12

12:35 pm-10:40 pm

2 stops26h 05m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Thu 1/22

7:30 am-4:50 pm

2 stops41h 20m

Hong Kong Intl

Mon 1/26

12:35 pm-10:51 pm

2 stops26h 16m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Thu 1/15

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Thu 2/12

12:35 pm-10:40 pm

2 stops26h 05m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Tue 4/21

7:00 am-10:30 pm

2 stops24h 30m

Hong Kong Intl

Wed 5/13

12:20 pm-10:40 pm

2 stops25h 20m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sat 4/18

7:00 am-10:30 pm

2 stops24h 30m

Hong Kong Intl

Sat 5/16

12:45 am-11:44 pm

2 stops37h 59m

$686

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Thu 1/15

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Sat 2/14

12:35 pm-10:40 pm

2 stops26h 05m

$686

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sat 3/7

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Thu 3/12

12:35 pm-10:38 pm

2 stops25h 03m

$686

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sat 4/18

7:00 am-10:30 pm

2 stops24h 30m

Hong Kong Intl

Fri 5/15

12:20 pm-10:40 pm

2 stops25h 20m

$734

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Tue 1/6

7:30 am-4:50 pm

2 stops41h 20m

Hong Kong Intl

Mon 1/19

6:10 pm-1:56 pm

2 stops35h 46m

$841

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 23 results
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Compare providers for flights from Ontario to Hong Kong

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Hong Kong in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
business-class.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Hong Kong flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Hong Kong flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Hong Kong flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Hong Kong flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Hong Kong flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 November 14, 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 20 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 HKG?

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 November 20, 2025.

One of the essential ways to save on airfare from Ontario to Hong Kong is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 17% on airfare.

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 November 20, 2025.
Get a feel of what it's like to fly with China Airlines, Cathay Pacific, and United Airlines from Ontario to Hong Kong by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
782 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

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
782 reviews
China Airlines
8.3
Very good
782 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

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
1,062 reviews
China Airlines
8.3
Very good
782 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

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
9,028 reviews
China Airlines
8.3
Very good
782 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

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.

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

    Departing from Ontario to Hong Kong will take you 24h 30m. The distance from Ontario to Hong Kong is about 7273 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, China Airlines ($837), United Airlines ($908), and Cathay Pacific ($928) offers the cheapest pricing from Ontario to Hong Kong. Users have found that China Airlines is 21% 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

Browse thousands of different options on Cheapflights for your next trip

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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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$837Average$939FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$908Average$1,218FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$928Average$1,216FlexibilityNo cancel feeOn-time72%

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