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Ontario

$313+ 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
FUK — ONT
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap 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 January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/21. 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 1/284:25 pm
HND
-
ONT
1 stop18h 18m
United Airlines
Wed 2/41:53 pm
ONT
-
HND
1 stop31h 57m
United Airlines
Deal found 1/21$554
This United Airlines deal was found by Cheapflights users on 1/19. 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 1/294:25 pm
HND
-
ONT
1 stop18h 18m
United Airlines
Thu 2/56:00 am
ONT
-
HND
1 stop15h 50m
United Airlines
Deal found 1/19$555
This United Airlines deal was found by Cheapflights users on 1/21. 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 1/294:45 pm
NRT
-
ONT
1 stop23h 08m
United Airlines
Wed 2/41:53 pm
ONT
-
NRT
1 stop32h 07m
United Airlines
Deal found 1/21$556
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/55:35 pm
NRT
-
ONT
1 stop20h 23m
United Airlines
Mon 2/95:05 am
ONT
-
NRT
1 stop17h 35m
United Airlines
Deal found 1/20$558
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/55:35 pm
NRT
-
ONT
1 stop20h 23m
United Airlines
Wed 2/181:45 pm
ONT
-
NRT
1 stop32h 55m
United Airlines
Deal found 1/20$576
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/94:45 pm
NRT
-
ONT
1 stop23h 08m
United Airlines
Fri 3/61:50 pm
ONT
-
NRT
2 stops56h 10m
United Airlines
Deal found 1/20$585
This United Airlines deal was found by Cheapflights users on 1/21. 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 2/194:25 pm
HND
-
ONT
1 stop18h 16m
United Airlines
Thu 3/56:15 am
ONT
-
HND
1 stop15h 35m
United Airlines
Deal found 1/21$587
This United Airlines deal was found by Cheapflights users on 1/20. 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 3/24:45 pm
NRT
-
ONT
1 stop23h 12m
United Airlines
Sun 3/86:15 am
ONT
-
NRT
1 stop16h 45m
United Airlines
Deal found 1/20$612
This United Airlines deal was found by Cheapflights users on 1/21. 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 1/304:25 pm
HND
-
ONT
1 stop18h 18m
United Airlines
Fri 2/66:00 am
ONT
-
HND
1 stop15h 50m
United Airlines
Deal found 1/21$613
This United Airlines deal was found by Cheapflights users on 1/21. 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 1/305:45 pm
NRT
-
ONT
1 stop21h 13m
United Airlines
Fri 2/61:53 pm
ONT
-
NRT
1 stop32h 07m
United Airlines
Deal found 1/21$614
This United Airlines deal was found by Cheapflights users on 1/21. 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 1/234:25 pm
HND
-
ONT
2 stops22h 33m
United Airlines
Tue 1/271:24 pm
ONT
-
HND
2 stops32h 26m
United Airlines
Deal found 1/21$633
This United Airlines deal was found by Cheapflights users on 1/20. 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 1/224:25 pm
HND
-
ONT
2 stops22h 33m
United Airlines
Sun 1/255:05 am
ONT
-
HND
2 stops40h 45m
United Airlines
Deal found 1/20$634

Find flight deals from Japan to Ontario

Keep the following information in mind while searching for Japan to Ontario flight deals. Data was last updated January 21, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$554
(United Airlines)

One-way from

$313
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$647
Provider with most accurate pricing for Tokyo (TYO)-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Tokyo (TYO)-Los Angeles flights.
Search Deals
From Japan to Ontario
Search Deals
One-way flight from Japan to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 21, 2026.
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

Mon 2/2

4:25 pm-10:53 pm

1 stop23h 28m

Ontario

Thu 2/5

6:00 am-2:50 pm

1 stop15h 50m

$554

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Thu 2/19

4:25 pm-12:38 pm

1 stop13h 13m

Ontario

Sat 2/21

1:53 pm-2:50 pm

1 stop31h 57m

$554

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Wed 2/11

4:25 pm-5:43 pm

1 stop18h 18m

Ontario

Wed 2/18

6:37 pm-2:50 pm

1 stop27h 13m

$555

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Thu 2/5

5:45 pm-9:58 pm

1 stop21h 13m

Ontario

Mon 2/9

6:00 am-3:00 pm

1 stop16h 00m

$556

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Fri 2/6

5:35 pm-12:47 pm

1 stop36h 12m

Ontario

Tue 2/10

5:05 am-3:40 pm

1 stop17h 35m

$556

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Thu 2/19

4:45 pm-5:41 pm

1 stop17h 56m

Ontario

Sat 2/21

1:45 pm-3:40 pm

1 stop32h 55m

$556

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Tue 2/10

4:45 pm-10:53 pm

1 stop23h 08m

Ontario

Tue 2/17

6:10 am-3:00 pm

1 stop15h 50m

$556

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Thu 2/5

5:35 pm-8:58 pm

1 stop20h 23m

Ontario

Wed 2/18

1:45 pm-3:40 pm

1 stop32h 55m

$576

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Mon 3/2

4:45 pm-5:41 pm

1 stop17h 56m

Ontario

Sat 3/7

1:40 pm-3:00 pm

1 stop32h 20m

$612

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Sun 2/8

4:25 pm-10:53 pm

1 stop23h 28m

Ontario

Mon 2/16

6:10 am-2:50 pm

1 stop15h 40m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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 $508). 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.

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 20h 40m. Fly via United Airlines, Korean Air, 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 $346. Users have also found prices from $367 and $395 on Hawaiian Airlines and Delta, respectively.

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

    When deciding which route to take from Japan to Ontario consider Tokyo Narita - Ontario, Tokyo Haneda - Ontario or Osaka Kansai Intl - Ontario as they are the most popular.

  • 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 $508). 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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