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HK$3,476+ 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 23-4. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
4 Mar — 11 Mar1
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 2 February 2026.

Mon 9-310:35
HKG
-
ONT
1 stop16h 43m
United Airlines
Mon 23-306:15
ONT
-
HKG
1 stop22h 05m
United Airlines
Deal found 2-2HK$5,484
Sat 18-411:45
HKG
-
ONT
1 stop21h 02m
United Airlines
Fri 15-505:00
ONT
-
HKG
2 stops33h 00m
United Airlines
Deal found 1-2HK$5,531
Sat 28-210:35
HKG
-
ONT
2 stops26h 15m
United Airlines
Fri 6-305:15
ONT
-
HKG
2 stops33h 30m
United Airlines
Deal found 30-1HK$5,539
Mon 9-311:15
HKG
-
ONT
1 stop20h 35m
星宇航空
Sat 14-322:45
ONT
-
HKG
1 stop20h 25m
星宇航空
Deal found 2-2HK$5,578
Fri 17-420:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Mon 11-523:10
ONT
-
HKG
1 stop19h 45m
星宇航空
Deal found 1-2HK$5,695
Tue 3-317:35
HKG
-
ONT
1 stop15h 15m
China Airlines
Tue 10-323:50
ONT
-
HKG
1 stop22h 10m
China Airlines
Deal found 1-2HK$5,742
Tue 1-917:35
HKG
-
ONT
1 stop16h 05m
China Airlines
Fri 25-900:10
ONT
-
HKG
1 stop18h 05m
China Airlines
Deal found 31-1HK$5,750
Tue 26-517:35
HKG
-
ONT
1 stop15h 25m
China Airlines
Mon 1-600:10
ONT
-
HKG
1 stop21h 55m
China Airlines
Deal found 1-2HK$5,789
Wed 4-210:35
HKG
-
ONT
1 stop23h 15m
Singapore Airlines
Sat 14-213:53
ONT
-
HKG
1 stop37h 27m
Singapore Airlines
Deal found 31-1HK$5,859
Tue 10-310:20
HKG
-
ONT
1 stop22h 30m
China Airlines
Tue 10-323:50
ONT
-
HKG
1 stop18h 25m
China Airlines
Deal found 31-1HK$5,937
Wed 6-511:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Sat 17-1023:10
ONT
-
HKG
1 stop19h 45m
星宇航空
Deal found 30-1HK$5,969

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 2 February 2026.

Return from

HK$4,609

One-way from

HK$3,476

Popular in

August

Cheapest in

November

Average price

HK$6,094
China Airlines
  • China Airlines
  • 27-2-17-3
  • 2 total stops
  • 37h 35m total
  • Hong Kong to Los Angeles
Search Deals
星宇航空
  • 星宇航空
  • 23-4
  • 1 total stop
  • 35h 55m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (HK$733 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (HK$118 potential savings vs. average return price).
Search Deals
Average for return flights in February 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 2 February 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 9-3

10:35-12:18

1 stop16h 43m

Ontario

Mon 23-3

06:15-19:20

1 stop22h 05m

HK$5,484

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 11-4

22:30-20:36

2 stops37h 06m

Ontario

Fri 24-4

13:43-05:00

2 stops24h 17m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 23-2

10:35-20:50

2 stops26h 15m

Ontario

Fri 27-2

13:45-19:20

2 stops37h 35m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 17-3

22:30-22:57

1 stop15h 27m

Ontario

Tue 24-3

06:15-19:20

1 stop22h 05m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 28-2

10:35-20:50

2 stops26h 15m

Ontario

Sat 7-3

13:50-06:45

2 stops24h 55m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 18-4

11:45-12:14

1 stop15h 29m

Ontario

Sun 10-5

18:59-05:00

1 stop19h 01m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 11-4

22:30-20:36

2 stops37h 06m

Ontario

Sat 18-4

13:34-05:00

2 stops24h 26m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 19-4

11:45-17:47

1 stop21h 02m

Ontario

Wed 13-5

05:00-05:00

2 stops33h 00m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 23-4

11:45-12:14

1 stop15h 29m

Ontario

Wed 29-4

05:10-18:55

2 stops22h 45m

HK$5,531

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 15-3

21:10-16:50

1 stop34h 40m

HK$3,484

Flights are sorted by cheapest return flights first.

Deals found on 31-1

Showing 1-10 of 20 results
1
2

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 2 February 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
803 reviews
Check prices

Crew

8.5

Comfort

8.0

Boarding

8.3

Overall

8.3

Entertainment

8.0

Food

7.8

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
8.3
Very Good
803 reviews
China Airlines
8.3
Very Good
803 reviews
Check prices

Crew

8.5

Comfort

8.0

Boarding

8.3

Overall

8.3

Entertainment

8.0

Food

7.8

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.

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

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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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