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HK$4,371+ 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 6-6. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
21 Jun — 28 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to Ontario in 2026

Enter your travel dates to find the best prices.

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 May 2026.

Wed 9-922:30
HKG
-
ONT
1 stop28h 42m
United Airlines
Sun 13-913:53
ONT
-
HKG
1 stop38h 02m
United Airlines
Deal found 17-5HK$7,121
Fri 19-611:45
HKG
-
ONT
1 stop25h 52m
Lufthansa
Sun 5-718:39
ONT
-
HKG
1 stop19h 21m
Lufthansa
Deal found 18-5HK$7,191
Wed 20-509:00
HKG
-
ONT
1 stop23h 05m
Multiple Airlines
Sat 27-623:10
ONT
-
HKG
1 stop19h 50m
Multiple Airlines
Deal found 19-5HK$7,230
Sat 6-611:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Fri 23-1023:30
ONT
-
HKG
1 stop28h 00m
星宇航空
Deal found 20-5HK$7,254
Thu 3-922:50
HKG
-
ONT
1 stop33h 15m
Multiple Airlines
Mon 7-923:30
ONT
-
HKG
1 stop19h 25m
Multiple Airlines
Deal found 18-5HK$7,356
Fri 5-620:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Sat 20-623:10
ONT
-
HKG
1 stop19h 45m
星宇航空
Deal found 20-5HK$7,395
Wed 16-911:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Sat 3-1023:30
ONT
-
HKG
1 stop19h 25m
星宇航空
Deal found 19-5HK$7,410
Fri 19-620:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Sat 20-623:10
ONT
-
HKG
1 stop19h 45m
星宇航空
Deal found 20-5HK$7,544
Sun 24-520:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Sat 30-523:10
ONT
-
HKG
1 stop28h 45m
星宇航空
Deal found 17-5HK$7,606
Sat 13-613:10
HKG
-
ONT
1 stop18h 55m
Multiple Airlines
Sat 20-623:10
ONT
-
HKG
1 stop19h 45m
Multiple Airlines
Deal found 19-5HK$7,614
Mon 15-617:35
HKG
-
ONT
1 stop15h 25m
China Airlines
Thu 18-600:10
ONT
-
HKG
1 stop18h 05m
China Airlines
Deal found 19-5HK$7,622
Fri 12-617:35
HKG
-
ONT
1 stop15h 25m
China Airlines
Mon 22-600:10
ONT
-
HKG
1 stop18h 55m
China Airlines
Deal found 19-5HK$7,630

Find flight deals to Ontario

Find the latest flights to Ontario in 2026, 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 May 2026.

Return from

HK$6,384

One-way from

HK$4,371

Popular in

July

Cheapest in

November

Average price

HK$7,724
Air Canada
  • Air Canada
  • 13-10-2-11
  • 3 total stops
  • 40h 50m total
  • Hong Kong to Los Angeles
Search Deals
星宇航空
  • 星宇航空
  • 6-6
  • 1 total stop
  • 20h 45m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (HK$792 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$131 potential savings vs. average return price).
Search Deals
Average for return flights in May 2026
Search Deals

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 May 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Departure

Return

Price

Cheapest return flight

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 13-10

11:45-15:22

1 stop18h 37m

Ontario

Mon 2-11

18:53-06:45

1 stop19h 52m

HK$7,121

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 9-9

11:45-20:53

2 stops24h 08m

Ontario

Sun 13-9

06:00-05:00

1 stop32h 00m

HK$7,121

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 12-6

11:05-18:00

1 stop21h 55m

Ontario

Tue 23-6

00:10-10:05

1 stop18h 55m

HK$7,857

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 29-6

14:05-18:00

1 stop18h 55m

Ontario

Sun 12-7

00:45-13:05

1 stop21h 20m

HK$8,805

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 5-6

11:45-22:37

1 stop25h 52m

Ontario

Sat 20-6

13:18-18:55

2 stops38h 37m

HK$9,087

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 11-6

01:25-23:11

2 stops36h 46m

Ontario

Wed 24-6

12:04-21:55

2 stops42h 51m

HK$10,121

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 1-7

10:10-17:40

1 stop22h 30m

Ontario

Sat 4-7

23:55-09:55

1 stop19h 00m

HK$10,489
Fastest return journey

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 1-8

17:35-18:40

1 stop16h 05m

Ontario

Sun 30-8

00:45-09:15

1 stop17h 30m

HK$10,881

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 1-8

17:35-18:40

1 stop16h 05m

Ontario

Thu 27-8

00:45-09:15

1 stop17h 30m

HK$10,881

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 2-9

01:25-23:24

2 stops36h 59m

Ontario

Sun 6-9

14:27-15:10

2 stops33h 43m

HK$12,009

Flights are sorted by cheapest return flights first.

Deals found on 18-5

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 May 2026.
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
826 reviews
Check prices

Food

7.8

Boarding

8.3

Crew

8.5

Overall

8.3

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
China Airlines
8.3
Very Good
826 reviews
China Airlines
8.3
Very Good
826 reviews
Check prices

Food

7.8

Boarding

8.3

Crew

8.5

Overall

8.3

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.

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.

  • What is the cheapest airport to fly to in Ontario?

    Ontario is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario typically cost HK$479, while return flights cost around HK$1,774.

  • 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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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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