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$440+ Cheap flights from Ontario (ONT) to Japan

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Ontario to Japan

Keep the following information in mind while searching for Ontario to Japan flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$880
(American Airlines)

One-way from

$440
(Justfly.com)

Popular in

June

Cheapest in

February

Average price

$948
Provider with most accurate pricing for Los Angeles-Tokyo (TYO) flight deals.
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From Ontario to Japan
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One-way flight from Ontario to Japan
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Highest demand for flights based on searches. 14% potential increase in price ($153 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Ontario to Japan

Cheapest flights from Ontario to Japan
Explore the most affordable flight options available from Ontario to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This eDestinos deal was found by Cheapflights users on 4/30. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/87:00 amONT - NRT
2 stops22h 05mKorean Air
Mon 9/229:20 amNRT - ONT
2 stops29h 22mKorean Air
Deal found 4/30$812
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/312:59 amONT - NRT
2 stops45h 21mMultiple Airlines
Thu 5/89:30 pmNRT - ONT
1 stop28h 32mMultiple Airlines
Deal found 4/30$842
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:38 amONT - HND
1 stop17h 17mAmerican Airlines
Wed 9/174:30 pmHND - ONT
1 stop21h 26mAmerican Airlines
Deal found 4/30$880
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/811:59 pmONT - NRT
1 stop23h 01mAmerican Airlines
Wed 9/176:30 pmNRT - ONT
1 stop19h 26mAmerican Airlines
Deal found 4/30$882
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/45:45 amONT - HND
1 stop16h 15mDelta
Tue 5/204:05 pmHND - ONT
1 stop14h 10mDelta
Deal found 4/30$886
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:48 amONT - KIX
2 stops19h 57mAmerican Airlines
Mon 9/295:55 pmKIX - ONT
2 stops19h 45mAmerican Airlines
Deal found 4/29$890
This KAYAK deal was found by Cheapflights users on 4/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:00 amONT - HND
2 stops22h 50mKorean Air
Tue 11/252:00 amHND - ONT
2 stops32h 17mKorean Air
Deal found 4/30$896
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 9/56:36 pmONT - HND
2 stops32h 24mUnited Airlines
Tue 9/169:55 pmHND - ONT
2 stops30h 18mUnited Airlines
Deal found 4/29$908
This Korean Air deal was found by Cheapflights users on 4/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/177:00 amONT - FUK
2 stops21h 05mKorean Air
Tue 9/2310:15 amFUK - ONT
2 stops23h 02mKorean Air
Deal found 4/30$909
This Korean Air deal was found by Cheapflights users on 4/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:00 amONT - KIX
2 stops23h 00mKorean Air
Tue 5/2712:35 pmKIX - ONT
2 stops21h 45mKorean Air
Deal found 4/30$916
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Thu 11/136:00 amONT - KIX
1 stop17h 35mUnited Airlines
Tue 11/256:30 pmKIX - ONT
1 stop16h 30mUnited Airlines
Deal found 4/30$935
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 11/196:00 amONT - NRT
1 stop16h 00mUnited Airlines
Fri 12/58:25 pmNRT - ONT
2 stops20h 45mUnited Airlines
Deal found 4/30$937

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Japan 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 May 1, 2025.
Use the filters below to find and compare flights from Ontario to Japan that are best for you.

Fly from

Ontario

Fly to

Japan

Route

Depart

Return

Price

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sat 5/3

12:59 am-2:20 pm

2 stops45h 21m

Tokyo Narita

Thu 5/8

9:30 pm-10:02 am

1 stop28h 32m

$842

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 9/8

6:38 am-3:55 pm

1 stop17h 17m

Tokyo Haneda

Wed 9/17

4:30 pm-9:56 pm

1 stop21h 26m

$880

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Fri 9/12

8:04 pm-6:45 pm

2 stops30h 41m

Osaka Kansai Intl

Fri 9/19

5:55 pm-9:56 pm

2 stops20h 01m

$890

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 5/11

6:00 am-2:00 pm

1 stop16h 00m

Tokyo Haneda

Wed 5/28

4:05 pm-2:15 pm

1 stop14h 10m

$894

OntarioTokyo

ONT - HND

ONTHND

Ontario

Thu 9/18

1:42 pm-4:30 am

1 stop22h 48m

Tokyo Haneda

Sun 9/28

9:55 pm-5:32 pm

2 stops35h 37m

$908

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 5/14

6:00 am-9:05 pm

2 stops23h 05m

Tokyo Narita

Mon 5/26

8:55 pm-6:20 pm

2 stops37h 25m

$913

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 5/13

6:00 am-10:50 pm

2 stops24h 50m

Tokyo Haneda

Wed 5/28

8:25 am-6:20 pm

2 stops25h 55m

$922

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sun 7/13

6:15 am-4:45 pm

2 stops18h 30m

Tokyo Narita

Mon 7/21

5:45 pm-9:38 pm

2 stops19h 53m

$926

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 9/15

6:00 am-2:50 pm

1 stop16h 50m

Osaka Kansai Intl

Thu 9/25

4:50 pm-5:32 pm

1 stop16h 42m

$935

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 7/7

6:10 am-3:25 pm

1 stop17h 15m

Tokyo Narita

Fri 8/22

5:25 pm-5:37 pm

1 stop16h 12m

$939

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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

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

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

Currently, February is the cheapest month in which you can book a flight from Ontario to Japan (average of $871). Flying from Ontario to Japan in December is currently the most expensive (average of $1,656). 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 ONT to JP?

Find hourly flight availability from Ontario to Japan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Japan as you normally would.

Rainfall in Japan by month

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

In terms of precipitation, rainfall in Japan ranges from 2.0 - 8.3 inches per month. September is typically the wettest month, when rainfall can reach 8.3 in. January is typically the driest time to visit Japan when rainfall is around 2.0 in.

Temperature in Japan by month

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

If weather is an important factor for your trip to Japan, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Japan

Get insights into the airlines that provide service to Japan. 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 Japan. Reviews last updated May 1, 2025.
Read through reviews of airlines operating flights from Ontario to Japan, such as STARLUX Airlines, EVA Air and Korean Air. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
161 reviews

Entertainment

9.0

Food

8.9

Crew

9.3

Comfort

9.0

Overall

9.1

Boarding

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Entertainment

9.0

Food

8.9

Crew

9.3

Comfort

9.0

Overall

9.1

Boarding

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Entertainment

9.0

Food

8.9

Crew

9.3

Comfort

9.0

Overall

9.1

Boarding

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Entertainment

9.0

Food

8.9

Crew

9.3

Comfort

9.0

Overall

9.1

Boarding

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,464 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Entertainment

9.0

Food

8.9

Crew

9.3

Comfort

9.0

Overall

9.1

Boarding

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Entertainment

9.0

Food

8.9

Crew

9.3

Comfort

9.0

Overall

9.1

Boarding

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Japan. 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 from for flights from Ontario to Japan?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Japan. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

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

    To fly one-way, consider booking your trip with Korean Air, which is currently one of the cheapest options available, starting at $440. Delta flights start at $445 while deals on United Airlines start at $466 one-way.

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

    The most popular flight routes from Ontario to Japan are Ontario - Tokyo Narita, Ontario - Tokyo Haneda and Ontario - Osaka Kansai Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Japan 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 Ontario to Japan?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Japan (average of $871). Flying from Ontario to Japan in December is currently the most expensive (average of $1,656). 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.

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Top 8 airlines flying from Ontario to Japan

Discover the top 8 airlines that operate flights from Ontario to Japan. 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,119FlexibilityNo cancel feeOn-time69%
ZIPAIRCheapest$591Average$778FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$683Average$1,068FlexibilityNo cancel feeOn-time79%
ANACheapest$686Average$1,051FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$712Average$964FlexibilityNo cancel feeOn-time71%
DeltaCheapest$895Average$1,148FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$966Average$1,430FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$967Average$1,187FlexibilityNo cancel feeOn-time70%

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