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HK$3,564+ 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 23-9. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
14 Jul — 21 Jul1
1 adult

Flights to Ontario in 2025

Find the latest flights to Ontario in 2025, 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 9 July 2025.

Return from

HK$5,817

One-way from

HK$3,564

Popular in

August

Cheapest in

March

Average price

HK$9,577
Philippine Airlines
  • Philippine Airlines
  • 21-8-28-8
  • 2 total stops
  • 47h 40m total
  • Hong Kong to Los Angeles
星宇航空
  • 星宇航空
  • 23-9
  • 1 total stop
  • 35h 55m total
  • Hong Kong to Ontario
Highest demand for flights based on searches. 19% potential increase in price (HK$14,600 potential increase over avg. return price).
Cheapest flight prices on average. 5% potential price decrease (HK$3,023 potential savings vs. average return price).
Average for return flights in July 2025

Find flight deals to Ontario

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 9 July 2025.

Sat 20-911:20HKG - ONT
1 stop20h 45m星宇航空
Sat 22-1121:45ONT - HKG
1 stop20h 25m星宇航空
Deal found 8-7HK$5,738
Mon 3-1121:10HKG - ONT
1 stop35h 40mChina Airlines
Fri 28-1122:45ONT - HKG
1 stop28h 15mChina Airlines
Deal found 8-7HK$5,762
Sat 27-911:15HKG - ONT
2 stops24h 09mUnited Airlines
Sun 12-1020:16ONT - HKG
1 stop17h 44mUnited Airlines
Deal found 7-7HK$5,966
Wed 24-1213:30HKG - ONT
2 stops25h 07mMultiple Airlines
Wed 14-116:05ONT - HKG
2 stops24h 55mMultiple Airlines
Deal found 7-7HK$7,340

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 9 July 2025.
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

Sat 20-9

11:20-17:05

1 stop20h 45m

Ontario

Sat 22-11

21:45-10:10

1 stop20h 25m

HK$5,738

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 3-11

21:10-16:50

1 stop35h 40m

Ontario

Fri 28-11

22:45-19:00

1 stop28h 15m

HK$5,762

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 27-9

11:15-22:42

1 stop26h 27m

Ontario

Sat 11-10

18:51-18:55

1 stop33h 04m

HK$5,966

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 24-12

13:30-22:37

2 stops25h 07m

Ontario

Wed 14-1

16:05-09:00

2 stops24h 55m

HK$7,340

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 23-9

20:10-17:05

1 stop35h 55m

HK$3,564

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 4-9

20:10-18:40

1 stop37h 30m

HK$3,627

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 20-9

13:30-10:44

2 stops36h 14m

HK$4,302

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 4-9

19:40-00:03

2 stops19h 23m

HK$4,364

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 23-10

22:30-17:23

2 stops33h 53m

HK$5,471

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 7-8

01:25-18:24

2 stops31h 59m

HK$6,798

Flights are sorted by cheapest return flights first.

Deals found on 8-7

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

How long is the flight to Ontario?

On average, a flight from Hong Kong to Ontario takes 15 hours 15 minutes. Flights to Ontario from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

What are the cheapest airlines that fly to Ontario?

The cheapest airline flying from Hong Kong to Ontario is China Airlines.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 mm per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

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 9 July 2025.
Get a feel of what it's like to fly with 星宇航空, EVA Air, andChina 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.
星宇航空
9.0
Wonderful

Comfort

9.0

Overall

9.0

Boarding

9.0

Entertainment

9.0

Crew

9.3

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
星宇航空
9.0
Wonderful
星宇航空
9.0
Wonderful

Comfort

9.0

Overall

9.0

Boarding

9.0

Entertainment

9.0

Crew

9.3

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
星宇航空
9.0
Wonderful

Comfort

9.0

Overall

9.0

Boarding

9.0

Entertainment

9.0

Crew

9.3

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
星宇航空
9.0
Wonderful

Comfort

9.0

Overall

9.0

Boarding

9.0

Entertainment

9.0

Crew

9.3

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
星宇航空
9.0
Wonderful

Comfort

9.0

Overall

9.0

Boarding

9.0

Entertainment

9.0

Crew

9.3

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
星宇航空
9.0
Wonderful

Comfort

9.0

Overall

9.0

Boarding

9.0

Entertainment

9.0

Crew

9.3

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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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