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$365+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HKG
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
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 21 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap 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 December 9, 2025.

This Trip.com deal was found by Cheapflights users on 12/8. 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 12/319:45 pmONT - HKG
1 stop20h 30mMultiple Airlines
Mon 3/22:00 pmHKG - ONT
1 stop17h 50mMultiple Airlines
Deal found 12/8$1,037
This Trip.com deal was found by Cheapflights users on 12/7. 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.
Mon 12/89:45 pmONT - HKG
1 stop20h 45mMultiple Airlines
Mon 12/154:35 pmHKG - ONT
1 stop15h 15mMultiple Airlines
Deal found 12/7$1,039
This oojo deal was found by Cheapflights users on 12/8. 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.
Tue 12/3010:50 pmONT - HKG
1 stop22h 10mChina Airlines
Thu 1/1511:10 amHKG - ONT
1 stop21h 40mChina Airlines
Deal found 12/8$1,163
This oojo deal was found by Cheapflights users on 12/7. 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.
Sun 12/710:50 pmONT - HKG
1 stop19h 20mChina Airlines
Sun 12/1411:10 amHKG - ONT
1 stop21h 40mChina Airlines
Deal found 12/7$1,186
This United Airlines deal was found by Cheapflights users on 12/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amONT - HKG
1 stop21h 20mUnited Airlines
Wed 12/1710:35 amHKG - ONT
1 stop17h 42mUnited Airlines
Deal found 12/8$1,190
This FlightHub deal was found by Cheapflights users on 12/8. 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 12/810:50 pmONT - HKG
1 stop18h 25mChina Airlines
Mon 12/158:05 pmHKG - ONT
1 stop36h 45mChina Airlines
Deal found 12/8$1,203
This FlightHub deal was found by Cheapflights users on 12/7. 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 12/710:50 pmONT - HKG
1 stop19h 20mChina Airlines
Sat 12/1311:10 amHKG - ONT
1 stop21h 40mChina Airlines
Deal found 12/7$1,229
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amONT - HKG
2 stops38h 55mUnited Airlines
Sun 12/2810:35 amHKG - ONT
1 stop15h 26mUnited Airlines
Deal found 12/9$1,249
This United Airlines deal was found by Cheapflights users on 12/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:41 pmONT - HKG
1 stop20h 04mUnited Airlines
Mon 12/1510:30 pmHKG - ONT
1 stop16h 19mUnited Airlines
Deal found 12/8$1,287
This Gurufare deal was found by Cheapflights users on 12/7. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:45 pmONT - HKG
1 stop20h 25mSTARLUX Airlines
Sun 12/147:45 pmHKG - ONT
1 stop36h 05mSTARLUX Airlines
Deal found 12/7$1,292
This China Airlines deal was found by Cheapflights users on 12/8. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:50 pmONT - HKG
1 stop18h 25mChina Airlines
Fri 1/235:35 pmHKG - ONT
1 stop15h 15mChina Airlines
Deal found 12/8$1,303
This oojo deal was found by Cheapflights users on 12/8. 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.
Tue 12/910:50 pmONT - HKG
1 stop18h 25mChina Airlines
Tue 12/165:35 pmHKG - ONT
1 stop15h 15mChina Airlines
Deal found 12/8$1,305

Find 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 December 9, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$638
(Delta)

One-way from

$365
(Delta)

Popular in

December

Cheapest in

August

Average price

$1,789
Provider with most accurate pricing for Los Angeles-Hong Kong Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Hong Kong Intl flights.
Search Deals
From Ontario to Hong Kong
Search Deals
One-way flight from Ontario to Hong Kong
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($167 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 9, 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 2/9

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Tue 2/24

12:35 pm-10:37 pm

2 stops26h 02m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sun 3/1

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Mon 3/9

12:35 pm-10:33 pm

2 stops24h 58m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Tue 2/10

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Tue 2/24

12:35 pm-11:49 pm

2 stops27h 14m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sun 3/1

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Thu 3/12

12:35 pm-10:33 pm

2 stops24h 58m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Wed 2/11

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Thu 2/19

12:35 pm-10:37 pm

2 stops26h 02m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Wed 1/7

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Thu 1/29

12:35 pm-10:51 pm

2 stops26h 16m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Mon 3/2

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Mon 3/9

12:35 pm-10:33 pm

2 stops24h 58m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sun 2/15

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Wed 2/25

12:35 pm-10:37 pm

2 stops26h 02m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Mon 3/2

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Wed 3/11

12:35 pm-10:33 pm

2 stops24h 58m

$638

OntarioHong Kong

ONT - HKG

ONTHKG

Ontario

Sun 3/1

7:30 am-11:10 pm

2 stops23h 40m

Hong Kong Intl

Tue 3/10

12:35 pm-10:33 pm

2 stops24h 58m

$638

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 24 results
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2
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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 December 5, 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 $597). Flying from Ontario to Hong Kong in June is currently the most expensive (average of $897). 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 December 9, 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 December 9, 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
788 reviews

Comfort

8.0

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
China Airlines
8.2
Very good
788 reviews
China Airlines
8.2
Very good
788 reviews

Comfort

8.0

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
Cathay Pacific
7.6
Good
1,091 reviews
China Airlines
8.2
Very good
788 reviews

Comfort

8.0

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
United Airlines
7.4
Good
9,090 reviews
China Airlines
8.2
Very good
788 reviews

Comfort

8.0

Crew

8.5

Entertainment

8.0

Food

7.8

Boarding

8.3

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.

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 23h 40m. 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 ($835), 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 $597). Flying from Ontario to Hong Kong in June is currently the most expensive (average of $897). 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 December 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$835Average$938FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$908Average$1,218FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$928Average$1,216FlexibilityNo cancel feeOn-time72%

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