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HK$447+ Cheap flights from Ontario

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29-7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — HKG
7 Jul — 14 Jul1
1 adult

What to know about flights from Ontario

Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 2 July 2025.

Cheapest round-trip flight

HK$368

Cheapest airline

Delta

Good one-way deal

HK$357 or less
The cheapest round-trip flight from Ontario is currently to San Jose.
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On average, Delta currently has the cheapest one-way flight from Ontario (avg. price of HK$1,405).
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Price to beat on a one-way flight from Ontario.
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Find flights from Ontario

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 2 July 2025.

Thu 7-823:59ONT - JFK
Nonstop5h 31mJetBlue
Tue 12-819:00JFK - ONT
Nonstop6h 10mJetBlue
Deal found 30-6HK$2,017
Sat 26-717:13ONT - JFK
1 stop9h 17mFrontier
Mon 28-706:59JFK - ONT
1 stop16h 53mFrontier
Deal found 30-6HK$2,025
Wed 6-813:34ONT - EWR
1 stop8h 26mUnited Airlines
Tue 12-806:30EWR - ONT
1 stop9h 02mUnited Airlines
Deal found 1-7HK$2,096
Mon 4-822:05ONT - EWR
1 stop8h 24mDelta
Tue 12-815:29EWR - ONT
1 stop9h 51mDelta
Deal found 30-6HK$2,174
Fri 25-722:05ONT - JFK
1 stop9h 15mDelta
Wed 6-815:40JFK - ONT
1 stop9h 47mDelta
Deal found 1-7HK$2,206
Wed 12-1106:00ONT - EWR
1 stop9h 29mAlaska Airlines
Sun 16-1107:30EWR - ONT
1 stop10h 44mAlaska Airlines
Deal found 1-7HK$2,284
Tue 21-1006:00ONT - JFK
1 stop10h 24mAlaska Airlines
Thu 6-1116:54JFK - ONT
1 stop9h 36mAlaska Airlines
Deal found 1-7HK$2,284
Tue 23-906:00ONT - TPA
1 stop9h 09mAlaska Airlines
Tue 30-907:35TPA - ONT
1 stop9h 37mAlaska Airlines
Deal found 1-7HK$2,355
Wed 30-722:05ONT - TPA
1 stop8h 51mDelta
Wed 6-807:15TPA - ONT
1 stop7h 59mDelta
Deal found 1-7HK$2,363
Thu 24-700:59ONT - JFK
1 stop9h 57mAmerican Airlines
Mon 28-714:40JFK - ONT
1 stop9h 58mAmerican Airlines
Deal found 30-6HK$2,692
Wed 6-818:39ONT - TPA
1 stop8h 05mUnited Airlines
Sun 10-809:22TPA - ONT
2 stops11h 03mUnited Airlines
Deal found 1-7HK$2,747
Wed 16-723:59ONT - TPA
1 stop10h 42mJetBlue
Wed 30-714:40TPA - ONT
1 stop10h 19mJetBlue
Deal found 1-7HK$2,881

Find flights from Ontario within your budget

Find flights departing from Ontario that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 2 July 2025. In the last 7 days, Cheapflights users made a total of 70,647 searches

Fly to

Hong Kong

Route

Departure

Return

Price

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Thu 7-8

23:59-08:30

Nonstop5h 31m

New York John F Kennedy Intl

Mon 25-8

18:50-21:59

Nonstop6h 09m

HK$2,017

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Sat 26-7

17:13-05:30

1 stop9h 17m

New York John F Kennedy Intl

Mon 28-7

06:59-20:52

1 stop16h 53m

HK$2,025

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 6-8

18:39-05:37

1 stop7h 58m

Newark

Wed 13-8

06:30-12:32

1 stop9h 02m

HK$2,096

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Mon 4-8

22:05-10:50

1 stop9h 45m

Newark

Thu 7-8

06:00-10:30

1 stop7h 30m

HK$2,174

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Fri 25-7

22:05-10:20

1 stop9h 15m

New York John F Kennedy Intl

Wed 6-8

15:40-22:27

1 stop9h 47m

HK$2,206

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 12-11

06:00-18:29

1 stop9h 29m

Newark

Sun 16-11

07:30-15:14

1 stop10h 44m

HK$2,284

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 21-10

06:00-19:24

1 stop10h 24m

New York John F Kennedy Intl

Mon 27-10

07:00-15:14

1 stop11h 14m

HK$2,284

OntarioTampa

ONT - TPA

ONTTPA

Ontario

Tue 23-9

06:00-18:09

1 stop9h 09m

Tampa

Tue 30-9

07:35-14:12

1 stop9h 37m

HK$2,355

OntarioTampa

ONT - TPA

ONTTPA

Ontario

Wed 30-7

22:05-09:56

1 stop8h 51m

Tampa

Wed 6-8

07:15-12:14

1 stop7h 59m

HK$2,363

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Thu 24-7

00:59-13:56

1 stop9h 57m

New York John F Kennedy Intl

Mon 28-7

14:40-21:38

1 stop9h 58m

HK$2,692

Flights are sorted by cheapest return flights first.

Deals found on 30-6

Showing 1-10 of 48 results
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Best time to book a flight from Ontario

Have a flexible travel schedule? Discover the best time to fly from 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.

Travel insights for flights from Ontario

Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Ontario?

Use this chart to determine the optimal time to book a return flight from Ontario to Hong Kong. Price data was last updated on 27 June 2025.

The price you pay for your flight from Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Ontario?

Currently, August is the cheapest month in which you can book a flight from Ontario (average of HK$4,278). Flying from Ontario in June will prove the most costly (average of HK$7,332). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Ontario?

Only one airline operates round-trip flights from Ontario: China Airlines. This airline flies to the following popular destinations: Hong Kong.

China Airlines
China Airlines
From HK$909

What are popular destinations to fly to from Ontario?

If you’re flying from Ontario, these routes are more frequently taken by airlines Seattle (152 flights per day), Dallas (134 flights per day) and Atlanta (86 flights per day).

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From HK$46

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at HK$357. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From HK$46

Airline reviews for flights from Ontario

Get insights into the airlines that provide service from Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Ontario. In the last 7 days, Cheapflights users made a total of 70,647 searches.
Get a feel of what it's like to fly with 星宇航空, Korean Air, andJapan Airlines from Ontario 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
9.1
Wonderful
Check prices

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Crew

9.3

Overall

9.1

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
9.1
Wonderful
星宇航空
9.1
Wonderful
Check prices

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Crew

9.3

Overall

9.1

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.
Korean Air
8.4
Very Good
1,101 reviews
星宇航空
9.1
Wonderful
Check prices

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Crew

9.3

Overall

9.1

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.
Japan Airlines
8.3
Very Good
1,505 reviews
星宇航空
9.1
Wonderful
Check prices

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Crew

9.3

Overall

9.1

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.
China Airlines
8.3
Very Good
745 reviews
星宇航空
9.1
Wonderful
Check prices

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Crew

9.3

Overall

9.1

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.
Alaska Airlines
8.0
Very Good
10,000 reviews
星宇航空
9.1
Wonderful
Check prices

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Crew

9.3

Overall

9.1

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.

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Related info for your journey

Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 2 July 2025.

  • What are the most popular destinations to fly to from Ontario?

    This month, the top selected destinations from Ontario are Denver, Dallas/Fort Worth Airport, Guadalajara. Throughout the year, Dallas/Fort Worth Airport, Denver, Guadalajara are some of the top choices made by users flying from Ontario.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as HK$357 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for HK$357 to fly from Ontario.

  • What is the cheapest month to fly from Ontario?

    Currently, the cheapest month for flights from Ontario is August. The most expensive month for flights is June. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Ontario?

    Check out the cheapest flights from Ontario to embark to:
    Fly from Ontario to Hong Kong from HK$6,492 round trip

  • How does Cheapflights help users find flights from Ontario?

    Deals for flights from Ontario 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 from Ontario?

    Millions of users choose and trust Cheapflights to book the best flight deals from Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

  • Can Cheapflights find flights from Ontario with no change fees?

    Yes! Cheapflights helps users easily find flights from Ontario with no change fees.

  • Can Cheapflights notify me if prices for flights from Ontario become cheaper?

    Not ready to book yet? You can track prices for flights from Ontario on Cheapflights with our Price Alerts feature and get notified when better prices are available.

See more FAQs

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 from Ontario?

Deals for flights from Ontario 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 from Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario with no change fees.

Can Cheapflights notify me if prices for flights from Ontario become cheaper?

Not ready to book yet? You can track prices for flights from Ontario on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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