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$349+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$590
(KAYAK)

One-way from

$349
(lastminute.com)

Popular in

June

Cheapest in

February

Average price

$699
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 ($134 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This SmartFares deal was found by Cheapflights users on 9/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Wed 11/126:30 pmNRT - ONT
1 stop19h 23mHawaiian Airlines
Deal found 9/13$654
This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Wed 10/16:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 9/14$655
This SmartFares deal was found by Cheapflights users on 9/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:47 pmONT - NRT
1 stop28h 13mHawaiian Airlines
Wed 10/86:25 pmNRT - ONT
1 stop16h 08mHawaiian Airlines
Deal found 9/15$661
This flugladen.de deal was found by Cheapflights users on 9/12. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Wed 10/16:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 9/12$670
This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Tue 9/306:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 9/14$673
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/203:06 pmONT - NRT
1 stop32h 54mAlaska Airlines
Fri 10/36:25 pmNRT - ONT
1 stop21h 38mAlaska Airlines
Deal found 9/15$674
This Trip.com deal was found by Cheapflights users on 9/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Fri 10/36:25 pmNRT - ONT
1 stop21h 38mAlaska Airlines
Deal found 9/13$676
This KAYAK deal was found by Cheapflights users on 9/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Tue 9/306:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 9/13$677
This Hawaiian Airlines deal was found by Cheapflights users on 9/13. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amONT - NRT
1 stop18h 00mHawaiian Airlines
Thu 9/186:25 pmNRT - ONT
1 stop21h 38mHawaiian Airlines
Deal found 9/13$678
This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:00 amONT - NRT
1 stop18h 00mHawaiian Airlines
Wed 10/16:25 pmNRT - ONT
1 stop16h 22mHawaiian Airlines
Deal found 9/14$679
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:06 pmONT - NRT
1 stop32h 54mAlaska Airlines
Tue 9/236:25 pmNRT - ONT
1 stop35h 47mAlaska Airlines
Deal found 9/15$683
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Thu 11/66:30 pmNRT - ONT
1 stop13h 47mAlaska Airlines
Deal found 9/14$685

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 September 15, 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

Mon 1/12

9:50 am-7:30 pm

1 stop16h 40m

Tokyo Haneda

Wed 1/28

8:05 pm-9:55 pm

1 stop18h 50m

$631

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 10/22

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Wed 10/29

6:30 pm-8:53 pm

1 stop18h 23m

$693

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 11/25

5:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Tue 12/9

6:30 pm-6:32 pm

1 stop17h 02m

$693

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 2/15

6:37 pm-4:50 am

1 stop17h 13m

Tokyo Haneda

Fri 2/27

10:55 pm-10:57 pm

1 stop17h 02m

$706

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 3/1

9:50 am-7:30 pm

1 stop16h 40m

Tokyo Haneda

Thu 3/12

9:20 pm-9:55 pm

1 stop16h 35m

$717

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 12/1

7:50 am-6:45 pm

1 stop17h 55m

Osaka Kansai Intl

Thu 12/4

8:45 pm-8:23 pm

1 stop16h 38m

$746

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 11/25

4:49 pm-2:05 pm

2 stops28h 16m

Tokyo Haneda

Tue 12/9

4:50 pm-4:09 pm

2 stops16h 19m

$748

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 2/11

9:50 am-6:45 pm

1 stop39h 55m

Osaka Kansai Intl

Wed 3/11

8:45 pm-9:55 pm

1 stop17h 10m

$750

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 11/12

6:00 am-3:00 pm

1 stop16h 00m

Tokyo Narita

Wed 11/19

4:45 pm-12:37 pm

1 stop12h 52m

$753

OntarioSapporo

ONT - CTS

ONTCTS

Ontario

Wed 10/29

7:35 am-12:50 pm

2 stops37h 15m

Sapporo Chitose

Tue 11/11

2:00 pm-5:09 pm

2 stops44h 09m

$759

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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 $902). Flying from Ontario to Japan in December is currently the most expensive (average of $1,502). 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 September 15, 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.

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 September 15, 2025.
See what other customers who have flown with China Airlines, Delta, and Hawaiian Airlines from Ontario to Japan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
767 reviews

Crew

8.5

Food

7.8

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

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.
China Airlines
8.3
Very good
767 reviews
China Airlines
8.3
Very good
767 reviews

Crew

8.5

Food

7.8

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

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.
Delta
8.0
Very good
7,954 reviews
China Airlines
8.3
Very good
767 reviews

Crew

8.5

Food

7.8

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

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.
Hawaiian Airlines
7.8
Good
2,723 reviews
China Airlines
8.3
Very good
767 reviews

Crew

8.5

Food

7.8

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

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.
United Airlines
7.4
Good
8,929 reviews
China Airlines
8.3
Very good
767 reviews

Crew

8.5

Food

7.8

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

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.
American Airlines
7.2
Good
10,000 reviews
China Airlines
8.3
Very good
767 reviews

Crew

8.5

Food

7.8

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

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 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.

  • How long is the flight from Ontario to Japan?

    Airlines like Alaska Airlines, United Airlines, and Delta fly from Ontario to Japan in about 16h 40m. The time it takes to get you to your destination can typically vary by up to 11h 36m. Airlines will cover a distance of 5505 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $373. Hawaiian Airlines flights start at $379 while deals on United Airlines start at $427 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 $902). Flying from Ontario to Japan in December is currently the most expensive (average of $1,502). 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 5 airlines flying from Ontario to Japan

Discover the top 5 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,183FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$712Average$964FlexibilityNo cancel feeOn-time71%
DeltaCheapest$743Average$1,251FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$892Average$1,430FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$902Average$1,108FlexibilityNo cancel feeOn-time70%

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