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$345+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$728
(lastminute.com)

One-way from

$345
(Hawaiian Airlines)

Popular in

June

Cheapest in

February

Average price

$1,129
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. 13% potential increase in price ($133 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This lastminute.com deal was found by Cheapflights users on 6/10. 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.
lun. 10/66:00 amONT - NRT
1 stop18h 00mHawaiian Airlines
lun. 10/206:25 pmNRT - ONT
1 stop16h 05mHawaiian Airlines
Deal found 6/10$653
This lastminute.com deal was found by Cheapflights users on 6/10. 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.
lun. 10/611:07 amONT - HND
1 stop16h 18mHawaiian Airlines
lun. 10/209:20 pmHND - ONT
1 stop15h 17mHawaiian Airlines
Deal found 6/10$728
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
dom. 9/219:41 pmONT - NRT
1 stop30h 19mMultiple Airlines
dom. 9/289:30 pmNRT - ONT
1 stop18h 10mMultiple Airlines
Deal found 6/9$761
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/36:00 amONT - NRT
1 stop18h 00mAlaska Airlines
mié. 9/246:25 pmNRT - ONT
1 stop16h 03mAlaska Airlines
Deal found 6/10$852
This American Airlines deal was found by Cheapflights users on 6/11. 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.
lun. 8/46:10 amONT - NRT
1 stop16h 50mAmerican Airlines
mié. 8/206:15 pmNRT - ONT
2 stops20h 33mAmerican Airlines
Deal found 6/11$873
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/3010:09 amONT - KIX
1 stop16h 36mAlaska Airlines
jue. 10/168:45 pmKIX - ONT
1 stop15h 52mAlaska Airlines
Deal found 6/9$880
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/116:00 amONT - NRT
1 stop17h 30mJapan Airlines
mié. 8/275:45 pmNRT - ONT
1 stop16h 43mJapan Airlines
Deal found 6/12$880
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 10/2911:59 pmONT - HND
1 stop26h 26mAmerican Airlines
mié. 11/56:00 pmHND - ONT
1 stop22h 45mAmerican Airlines
Deal found 6/11$880
This American Airlines deal was found by Cheapflights users on 6/12. 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.
mié. 10/156:47 amONT - KIX
2 stops19h 58mAmerican Airlines
sáb. 10/255:55 pmKIX - ONT
2 stops19h 45mAmerican Airlines
Deal found 6/12$889
This United Airlines deal was found by Cheapflights users on 6/12. 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.
mar. 7/86:39 pmONT - HND
1 stop17h 51mUnited Airlines
jue. 7/109:55 pmHND - ONT
2 stops40h 57mUnited Airlines
Deal found 6/12$890
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/1411:07 amONT - HND
1 stop16h 18mAlaska Airlines
mié. 10/299:20 pmHND - ONT
1 stop35h 54mAlaska Airlines
Deal found 6/10$892
This ScholarTrip deal was found by Cheapflights users on 6/12. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/611:10 pmONT - OKA
1 stop23h 30mSTARLUX Airlines
lun. 9/153:50 pmOKA - ONT
1 stop17h 15mSTARLUX Airlines
Deal found 6/12$912

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 junio 12, 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 - HND

ONTHND

Ontario

lun. 10/6

11:07 am-7:25 pm

1 stop16h 18m

Tokyo Haneda

lun. 10/20

9:20 pm-8:37 pm

1 stop15h 17m

$728

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

lun. 8/4

9:41 pm-8:00 pm

1 stop30h 19m

Tokyo Narita

lun. 8/25

9:30 pm-11:40 pm

1 stop18h 10m

$764

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

mar. 9/2

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

jue. 9/18

6:25 pm-11:59 pm

1 stop21h 34m

$852

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

lun. 9/8

7:22 pm-4:00 pm

1 stop28h 38m

Tokyo Narita

vie. 9/19

6:25 pm-11:59 pm

1 stop21h 34m

$865

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

lun. 8/4

6:10 am-3:00 pm

1 stop16h 50m

Tokyo Narita

mié. 8/20

6:15 pm-10:48 pm

2 stops20h 33m

$873

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

lun. 8/11

6:00 am-3:30 pm

1 stop17h 30m

Tokyo Narita

mié. 8/27

5:45 pm-6:28 pm

1 stop16h 43m

$880

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

mar. 9/30

10:09 am-6:45 pm

1 stop16h 36m

Osaka Kansai Intl

jue. 10/16

8:45 pm-8:37 pm

1 stop15h 52m

$880

OntarioTokyo

ONT - HND

ONTHND

Ontario

mié. 10/29

11:59 pm-6:25 pm

1 stop26h 26m

Tokyo Haneda

mié. 11/5

6:00 pm-11:45 pm

1 stop22h 45m

$880

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

mié. 10/15

6:47 am-6:45 pm

2 stops19h 58m

Osaka Kansai Intl

sáb. 10/25

5:55 pm-9:40 pm

2 stops19h 45m

$889

OntarioTokyo

ONT - HND

ONTHND

Ontario

mar. 7/8

6:39 pm-4:30 am

1 stop17h 51m

Tokyo Haneda

jue. 7/10

9:55 pm-10:52 pm

2 stops40h 57m

$890

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $1,625). 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 junio 12, 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 junio 12, 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
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

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.
STARLUX Airlines
9.1
Wonderful
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

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.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

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
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

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
1,489 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

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
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

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.

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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $345. Japan Airlines flights start at $429 while deals on Korean Air start at $430 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 $1,625). 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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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,119FlexibilityNo cancel feeOn-time69%
ZIPAIRCheapest$591Average$778FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$660Average$1,145FlexibilityNo cancel feeOn-time79%
ANACheapest$686Average$1,050FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$712Average$980FlexibilityNo cancel feeOn-time71%
DeltaCheapest$895Average$1,148FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$966Average$1,430FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$967Average$1,192FlexibilityNo cancel feeOn-time70%

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