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Ontario

$383+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
FUK — ONT
May 3 — May 101
Sun 5/3
Sun 5/10
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 April 3, 2026.

This United Airlines deal was found by Cheapflights users on 3/29. 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.
Sun 4/53:50 pm
HND
-
ONT
1 stop17h 57m
United Airlines
Tue 4/146:00 am
ONT
-
HND
1 stop15h 55m
United Airlines
Deal found 3/29$732
This United Airlines deal was found by Cheapflights users on 4/1. 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 8/273:50 pm
HND
-
ONT
2 stops22h 09m
United Airlines
Mon 8/318:00 am
ONT
-
HND
1 stop13h 55m
United Airlines
Deal found 4/1$739
This United Airlines deal was found by Cheapflights users on 4/1. 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 8/265:05 pm
NRT
-
ONT
2 stops44h 54m
United Airlines
Sun 8/308:00 am
ONT
-
NRT
1 stop15h 00m
United Airlines
Deal found 4/1$740
This United Airlines deal was found by Cheapflights users on 3/29. 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 5/65:05 pm
NRT
-
ONT
1 stop16h 47m
United Airlines
Tue 5/126:00 am
ONT
-
NRT
1 stop17h 00m
United Airlines
Deal found 3/29$758
This United Airlines deal was found by Cheapflights users on 3/30. 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 4/64:30 pm
NRT
-
ONT
1 stop36h 08m
United Airlines
Sun 4/196:00 am
ONT
-
NRT
1 stop17h 00m
United Airlines
Deal found 3/30$760
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:05 pm
HND
-
ONT
1 stop17h 11m
Delta
Mon 9/145:05 pm
ONT
-
HND
2 stops29h 15m
Delta
Deal found 3/29$777
This lastminute.com deal was found by Cheapflights users on 3/31. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/28:45 pm
KIX
-
ONT
1 stop18h 14m
Hawaiian Airlines
Wed 4/158:32 am
ONT
-
KIX
1 stop18h 13m
Hawaiian Airlines
Deal found 3/31$783
This United Airlines deal was found by Cheapflights users on 3/29. 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 3/313:50 pm
HND
-
ONT
1 stop18h 12m
United Airlines
Sun 4/1211:05 am
ONT
-
HND
1 stop34h 50m
United Airlines
Deal found 3/29$786
This United Airlines deal was found by Cheapflights users on 3/29. 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 4/45:05 pm
NRT
-
ONT
1 stop16h 42m
United Airlines
Sun 4/196:00 am
ONT
-
NRT
1 stop17h 00m
United Airlines
Deal found 3/29$788
This China Airlines deal was found by Cheapflights users on 3/29. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:10 pm
KIX
-
ONT
1 stop20h 50m
China Airlines
Mon 9/2812:10 am
ONT
-
KIX
1 stop20h 40m
China Airlines
Deal found 3/29$790
This United Airlines deal was found by Cheapflights users on 3/30. 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 3/315:05 pm
NRT
-
ONT
1 stop16h 57m
United Airlines
Sat 4/256:00 am
ONT
-
NRT
1 stop17h 00m
United Airlines
Deal found 3/30$791
This China Airlines deal was found by Cheapflights users on 3/30. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:05 pm
KIX
-
ONT
1 stop39h 35m
China Airlines
Sun 9/1312:45 am
ONT
-
KIX
1 stop25h 20m
China Airlines
Deal found 3/30$794

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 April 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$739
(United Airlines)

One-way from

$383
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$822
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. 9% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 3, 2026.
Use the filters below to find and compare flights from Japan to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Thu 9/10

4:05 pm-5:16 pm

1 stop17h 11m

Ontario

Mon 9/14

5:55 pm-2:20 pm

1 stop28h 25m

$780

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 9/25

1:10 pm-6:00 pm

1 stop20h 50m

Ontario

Mon 9/28

12:10 am-12:50 pm

1 stop20h 40m

$790

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 9/10

7:05 pm-6:40 pm

1 stop39h 35m

Ontario

Sun 9/13

12:45 am-6:05 pm

1 stop25h 20m

$794

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Sat 8/22

2:10 pm-5:40 pm

1 stop19h 30m

Ontario

Wed 9/9

11:10 pm-12:55 pm

1 stop21h 45m

$846

NagoyaOntario

NGO - ONT

NGOONT

Nagoya Chubu Centrair Intl

Thu 9/10

9:55 am-6:40 pm

1 stop24h 45m

Ontario

Sun 9/13

12:45 am-11:20 am

1 stop18h 35m

$851

NagoyaOntario

NGO - ONT

NGOONT

Nagoya Chubu Centrair Intl

Thu 9/10

9:15 am-5:16 pm

2 stops24h 01m

Ontario

Mon 9/14

7:00 am-9:00 pm

2 stops22h 00m

$859

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Sat 8/22

8:00 pm-6:40 pm

1 stop38h 40m

Ontario

Wed 9/9

12:45 am-4:35 pm

1 stop23h 50m

$860

NagoyaOntario

NGO - ONT

NGOONT

Nagoya Chubu Centrair Intl

Thu 9/10

1:40 pm-11:14 am

2 stops37h 34m

Ontario

Mon 9/14

7:00 am-12:30 pm

2 stops37h 30m

$861

NagoyaOntario

NGO - ONT

NGOONT

Nagoya Chubu Centrair Intl

Thu 5/7

7:55 pm-5:05 pm

1 stop37h 10m

Ontario

Sat 5/23

11:10 pm-6:45 pm

1 stop27h 35m

$893

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Sun 8/23

4:05 pm-10:40 pm

1 stop22h 35m

Ontario

Sun 9/20

7:00 am-2:20 pm

1 stop15h 20m

$897

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 60 resultsSorted by cheapest first
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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 August is currently the most expensive (average of $448). 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 17h 11m. Fly via Delta, China Airlines, or STARLUX Airlines to get the fastest option. Japan and Ontario are separated by a distance of 5505 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 Frontier. According to our data, you can fly for as low as $97. Users have also found prices from $167 and $207 on American Airlines and United Airlines, respectively.

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

    When deciding which route to take from Japan to Ontario consider Tokyo Haneda - Ontario, Tokyo Narita - 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 August is currently the most expensive (average of $448). 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

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