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HK$4,165+ 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 6-5. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
18 May — 25 May1
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 18 April 2026.

Mon 8-613:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Sat 27-623:10
ONT
-
HKG
1 stop19h 50m
Multiple Airlines
Deal found 16-4HK$6,968
Mon 4-513:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Fri 8-523:10
ONT
-
HKG
1 stop20h 00m
Multiple Airlines
Deal found 16-4HK$7,133
Sat 23-510:10
HKG
-
ONT
1 stop21h 55m
Multiple Airlines
Sat 30-523:10
ONT
-
HKG
1 stop31h 00m
Multiple Airlines
Deal found 16-4HK$7,281
Sat 2-511:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Sat 9-523:10
ONT
-
HKG
1 stop28h 45m
星宇航空
Deal found 16-4HK$7,289
Mon 18-513:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Mon 1-623:10
ONT
-
HKG
1 stop28h 45m
Multiple Airlines
Deal found 18-4HK$7,360
Thu 11-620:10
HKG
-
ONT
1 stop35h 55m
Multiple Airlines
Wed 24-623:10
ONT
-
HKG
1 stop28h 20m
Multiple Airlines
Deal found 18-4HK$7,477
Sat 16-511:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Sat 23-523:10
ONT
-
HKG
1 stop28h 45m
星宇航空
Deal found 18-4HK$7,500
Thu 24-911:45
HKG
-
ONT
2 stops23h 35m
United Airlines
Tue 6-1005:00
ONT
-
HKG
2 stops33h 00m
United Airlines
Deal found 16-4HK$7,508
Thu 10-922:30
HKG
-
ONT
1 stop28h 42m
United Airlines
Sun 13-906:00
ONT
-
HKG
1 stop32h 00m
United Airlines
Deal found 16-4HK$7,516
Sun 28-620:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Wed 1-723:45
ONT
-
HKG
1 stop19h 10m
星宇航空
Deal found 14-4HK$7,524
Mon 1-608:35
HKG
-
ONT
1 stop23h 30m
Multiple Airlines
Mon 8-623:10
ONT
-
HKG
1 stop19h 45m
Multiple Airlines
Deal found 16-4HK$7,532
Mon 8-613:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Wed 24-623:10
ONT
-
HKG
1 stop19h 45m
Multiple Airlines
Deal found 18-4HK$7,579

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 18 April 2026.

Return from

HK$5,144

One-way from

HK$4,165

Popular in

April

Cheapest in

November

Average price

HK$9,105
Air China
  • Air China
  • 18-5-1-6
  • 2 total stops
  • 44h 20m total
  • Hong Kong to Los Angeles
Search Deals
6-5
  • 6-5
  • 1 total stop
  • 16h 20m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (HK$643 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (HK$229 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 18 April 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

Thu 24-9

11:45-12:20

1 stop15h 35m

Ontario

Tue 6-10

05:00-05:00

2 stops33h 00m

HK$7,508

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 10-9

11:45-12:38

2 stops39h 53m

Ontario

Sun 13-9

19:13-05:00

1 stop18h 47m

HK$7,516
Fastest return journey

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 14-9

17:35-18:40

1 stop16h 05m

Ontario

Sun 11-10

00:10-09:15

1 stop18h 05m

HK$8,244

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 9-9

14:35-22:58

2 stops47h 23m

Ontario

Sun 13-9

08:00-18:55

1 stop19h 55m

HK$8,291

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 10-5

20:10-18:00

1 stop36h 50m

Ontario

Mon 22-6

00:10-16:35

1 stop25h 25m

HK$8,738

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 3-6

21:15-18:00

1 stop35h 45m

Ontario

Mon 22-6

00:10-09:15

1 stop18h 05m

HK$8,738

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 4-6

22:30-12:12

1 stop28h 42m

Ontario

Sun 28-6

13:18-18:55

2 stops38h 37m

HK$8,886

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 4-10

13:30-11:09

2 stops36h 39m

Ontario

Fri 6-11

18:58-10:10

2 stops23h 12m

HK$9,348

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 8-5

18:15-22:32

2 stops43h 17m

Ontario

Sun 17-5

19:41-09:10

2 stops46h 29m

HK$10,202
Cheapest one-way

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 19-5

11:05-18:00

1 stop21h 55m

HK$4,588

Flights are sorted by cheapest return flights first.

Deals found on 13-4

Showing 1-10 of 21 resultsSorted by cheapest first
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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 18 April 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
817 reviews
Check prices

Food

7.8

Comfort

8.0

Boarding

8.3

Entertainment

8.0

Overall

8.3

Crew

8.5

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
817 reviews
China Airlines
8.3
Very Good
817 reviews
Check prices

Food

7.8

Comfort

8.0

Boarding

8.3

Entertainment

8.0

Overall

8.3

Crew

8.5

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.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Search flights to Ontario by cabin class

Find flights to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First class flights to Ontario
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Economy class flights to Ontario

Fly with Cheapflights

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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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