Ontario

$289+ Cheap flights from Japan to Ontario (ONT)

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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
FUK — ONT
Nov 15 — Nov 221
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Cheap flight deals from Japan to Ontario

Keep the following information in mind while searching for Japan to Ontario flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$606
(United Airlines)

One-way from

$289
(Trip.com)

Popular in

June

Cheapest in

November

Average price

$736
Provider with most accurate pricing for Tokyo (TYO)-Los Angeles flight deals.
Provider most trusted by Cheapflights users for Tokyo (TYO)-Los Angeles flights.
From Japan to Ontario
One-way flight from Japan to Ontario
Highest demand for flights based on searches. 11% potential increase in price ($113 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in October 2025

Find flight deals from Japan to Ontario

Cheapest flights from Japan to Ontario
Explore the most affordable flight options available from Japan to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:45 pmNRT - ONT
1 stop17h 58mUnited Airlines
Tue 1/65:05 amONT - NRT
2 stops40h 55mUnited Airlines
Deal found 10/13$607
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/264:25 pmHND - ONT
1 stop23h 16mUnited Airlines
Tue 1/61:53 pmONT - HND
1 stop31h 57mUnited Airlines
Deal found 10/15$607
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:45 pmNRT - ONT
1 stop21h 07mUnited Airlines
Mon 1/510:42 amONT - NRT
1 stop35h 18mUnited Airlines
Deal found 10/15$608
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/164:25 pmHND - ONT
1 stop12h 52mUnited Airlines
Wed 12/316:00 amONT - HND
1 stop15h 50mUnited Airlines
Deal found 10/16$609
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/164:45 pmNRT - ONT
1 stop12h 32mUnited Airlines
Wed 12/316:00 amONT - NRT
1 stop16h 00mUnited Airlines
Deal found 10/16$610
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/154:25 pmHND - ONT
1 stop12h 52mUnited Airlines
Wed 1/146:00 amONT - HND
1 stop15h 50mUnited Airlines
Deal found 10/16$610
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/154:45 pmNRT - ONT
1 stop12h 32mUnited Airlines
Wed 12/316:00 amONT - NRT
1 stop16h 00mUnited Airlines
Deal found 10/16$611
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:45 pmNRT - ONT
1 stop22h 56mUnited Airlines
Tue 1/61:20 pmONT - NRT
2 stops32h 40mUnited Airlines
Deal found 10/15$652
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:25 pmHND - ONT
1 stop12h 53mUnited Airlines
Sun 1/116:00 amONT - HND
1 stop15h 50mUnited Airlines
Deal found 10/16$653
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:45 pmNRT - ONT
1 stop12h 33mUnited Airlines
Tue 1/136:00 amONT - NRT
1 stop16h 00mUnited Airlines
Deal found 10/16$655
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:45 pmNRT - ONT
1 stop17h 49mUnited Airlines
Thu 11/276:00 amONT - NRT
1 stop16h 00mUnited Airlines
Deal found 10/14$676
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:25 pmHND - ONT
1 stop34h 36mUnited Airlines
Wed 12/316:00 amONT - HND
1 stop15h 50mUnited Airlines
Deal found 10/15$676

Cheapflights Fare Finder

 
Customize your flight search to find flights from Japan to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Japan to Ontario that are best for you.

Fly from

Japan

Fly to

Ontario

Route

Depart

Return

Price

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Tue 1/27

4:25 pm-10:53 pm

1 stop23h 28m

Ontario

Mon 2/16

1:52 pm-2:50 pm

1 stop31h 58m

$606

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Tue 12/23

4:45 pm-5:43 pm

1 stop17h 58m

Ontario

Tue 1/6

1:53 pm-3:00 pm

1 stop32h 07m

$607

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Tue 1/27

5:35 pm-12:47 pm

1 stop36h 12m

Ontario

Mon 2/16

5:40 am-3:00 pm

2 stops40h 20m

$607

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Mon 12/22

4:45 pm-5:43 pm

1 stop17h 58m

Ontario

Mon 1/5

10:42 am-3:00 pm

1 stop35h 18m

$607

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Fri 12/26

4:25 pm-10:41 pm

1 stop23h 16m

Ontario

Tue 1/6

1:53 pm-2:50 pm

1 stop31h 57m

$607

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Mon 1/26

4:25 pm-10:53 pm

1 stop23h 28m

Ontario

Tue 2/10

6:00 am-2:50 pm

1 stop15h 50m

$607

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Wed 12/24

5:45 pm-9:52 pm

1 stop21h 07m

Ontario

Mon 1/5

10:42 am-3:00 pm

1 stop35h 18m

$608

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Wed 12/17

4:25 pm-12:17 pm

1 stop12h 52m

Ontario

Wed 12/31

6:00 am-2:50 pm

1 stop15h 50m

$609

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Tue 12/16

4:25 pm-12:17 pm

1 stop12h 52m

Ontario

Wed 12/31

6:00 am-2:50 pm

1 stop15h 50m

$609

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Tue 12/16

4:25 pm-12:17 pm

1 stop12h 52m

Ontario

Mon 1/12

6:00 am-2:50 pm

1 stop15h 50m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 60 results
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Best time to book a flight from Japan to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Japan with our price prediction graph.
Estimated round-trip 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 from Japan to Ontario

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

Currently, December is the cheapest month in which you can book a flight from Japan to Ontario (average of $253). Flying from Japan to Ontario in March is currently the most expensive (average of $546). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from JP to ONT?

Find hourly flight availability from Japan to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s typically best to fly out from Japan to Ontario in the morning. Doing so could potentially save you 34% on the flight price compared to flying in the evening, which is usually more expensive.

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 October 16, 2025.
Read through reviews of airlines operating flights from Japan to Ontario, such as China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Entertainment

8.0

Food

7.8

Boarding

8.3

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Related info for your journey

Find useful and relevant information for your journey from Japan to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Ontario from Japan?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Japan. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Japan to Ontario?

    There are many flights that can get you from Japan to Ontario in 19h 30m. Fly via United Airlines, STARLUX Airlines, or China Airlines to get the fastest option. Japan and Ontario are separated by a distance of 5759 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Japan to Ontario one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $378. Users have also found prices from $442 and $453 on Alaska Airlines and China Airlines, respectively.

  • What are the most popular routes from Japan to Ontario?

  • Can I find deals for flights from Japan to Ontario that include hotel bookings?

    Yes. In addition to deals on Japan to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Japan to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Japan to Ontario.

  • Can I find deals for business class flights from Japan to Ontario?

    Yes. Cheapflights offers flight deals from Japan to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, December is the cheapest month in which you can book a flight from Japan to Ontario (average of $253). Flying from Japan to Ontario in March is currently the most expensive (average of $546). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Japan to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Japan to Ontario

Discover the top airline that operate flights from Japan to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$960Average$983FlexibilityNo cancel feeOn-time70%

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