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HK$4,167+ 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 11-5. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
24 May — 31 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 24 April 2026.

Mon 4-513:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Fri 8-523:10
ONT
-
HKG
1 stop28h 45m
Multiple Airlines
Deal found 22-4HK$7,135
Wed 10-613:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Sat 27-623:10
ONT
-
HKG
1 stop19h 50m
Multiple Airlines
Deal found 21-4HK$7,190
Fri 22-511:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Fri 29-523:10
ONT
-
HKG
1 stop20h 00m
星宇航空
Deal found 22-4HK$7,292
Sat 16-511:20
HKG
-
ONT
1 stop20h 45m
Multiple Airlines
Sat 23-523:10
ONT
-
HKG
1 stop19h 50m
Multiple Airlines
Deal found 22-4HK$7,362
Fri 24-422:30
HKG
-
ONT
1 stop26h 38m
United Airlines
Sat 25-413:34
ONT
-
HKG
2 stops24h 26m
United Airlines
Deal found 22-4HK$7,472
Thu 22-1011:45
HKG
-
ONT
2 stops48h 07m
United Airlines
Mon 26-1006:00
ONT
-
HKG
1 stop22h 20m
United Airlines
Deal found 20-4HK$7,511
Fri 24-411:45
HKG
-
ONT
2 stops39h 53m
United Airlines
Sun 26-406:00
ONT
-
HKG
1 stop32h 00m
United Airlines
Deal found 22-4HK$7,519
Mon 22-611:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Fri 26-623:10
ONT
-
HKG
1 stop20h 00m
星宇航空
Deal found 21-4HK$7,542
Thu 11-620:10
HKG
-
ONT
1 stop35h 55m
Multiple Airlines
Wed 24-623:10
ONT
-
HKG
1 stop28h 20m
Multiple Airlines
Deal found 19-4HK$7,566
Mon 8-613:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Wed 24-623:10
ONT
-
HKG
1 stop19h 45m
Multiple Airlines
Deal found 19-4HK$7,589
Sat 27-611:20
HKG
-
ONT
1 stop20h 45m
Multiple Airlines
Wed 15-723:45
ONT
-
HKG
1 stop29h 55m
Multiple Airlines
Deal found 19-4HK$7,715
Sun 14-620:10
HKG
-
ONT
1 stop35h 55m
Multiple Airlines
Sat 20-623:10
ONT
-
HKG
1 stop21h 55m
Multiple Airlines
Deal found 22-4HK$7,770

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 24 April 2026.

Return from

HK$5,146

One-way from

HK$4,167

Popular in

April

Cheapest in

November

Average price

HK$9,266
Air China
  • Air China
  • 7-5-22-5
  • 2 total stops
  • 60h 20m total
  • Hong Kong to Los Angeles
Search Deals
11-5
  • 11-5
  • 3 total stops
  • 52h 45m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (HK$700 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (HK$242 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 24 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

Sun 14-6

22:30-12:12

1 stop28h 42m

Ontario

Sun 5-7

05:00-18:55

2 stops46h 55m

HK$7,511
Fastest return journey

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 18-5

17:35-18:00

1 stop15h 25m

Ontario

Wed 24-6

00:10-09:15

1 stop18h 05m

HK$8,193

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 10-5

02:00-23:59

2 stops36h 59m

Ontario

Fri 15-5

19:41-09:10

2 stops46h 29m

HK$8,756

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 3-5

02:00-23:59

2 stops36h 59m

Ontario

Fri 8-5

19:59-16:30

2 stops53h 31m

HK$9,313

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 21-6

22:30-17:28

2 stops33h 58m

Ontario

Sat 27-6

13:18-18:55

2 stops38h 37m

HK$9,485

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 11-6

17:35-18:00

1 stop15h 25m

Ontario

Fri 3-7

00:45-10:05

1 stop18h 20m

HK$9,634

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 4-5

11:45-12:22

1 stop15h 37m

Ontario

Tue 12-5

05:00-05:00

2 stops33h 00m

HK$10,245

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 1-6

11:45-22:37

1 stop25h 52m

Ontario

Sun 21-6

18:30-18:55

2 stops33h 25m

HK$10,393

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 9-5

22:30-20:36

2 stops37h 06m

Ontario

Sun 24-5

13:50-18:55

1 stop38h 05m

HK$10,393

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 18-8

14:05-18:40

1 stop19h 35m

Ontario

Mon 24-8

00:45-09:15

1 stop17h 30m

HK$10,527

Flights are sorted by cheapest return flights first.

Deals found on 20-4

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
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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 24 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
818 reviews
Check prices

Crew

8.5

Overall

8.3

Food

7.8

Entertainment

8.0

Comfort

8.0

Boarding

8.3

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
818 reviews
China Airlines
8.3
Very Good
818 reviews
Check prices

Crew

8.5

Overall

8.3

Food

7.8

Entertainment

8.0

Comfort

8.0

Boarding

8.3

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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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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