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$194+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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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 November 4, 2025.

This KAYAK deal was found by Cheapflights users on 11/3. 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.
Sun 11/169:47 amONT - HND
1 stop16h 43mAlaska Airlines
Fri 12/59:20 pmHND - ONT
1 stop16h 03mAlaska Airlines
Deal found 11/3$517
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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 12/77:00 amONT - HND
1 stop17h 10mAlaska Airlines
Wed 12/179:20 pmHND - ONT
1 stop17h 23mAlaska Airlines
Deal found 11/2$537
This KAYAK deal was found by Cheapflights users on 11/3. 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 12/27:00 amONT - HND
1 stop17h 10mAlaska Airlines
Fri 12/198:05 pmHND - ONT
1 stop19h 03mAlaska Airlines
Deal found 11/3$627
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Wed 12/37:00 amONT - HND
1 stop19h 30mAlaska Airlines
Thu 12/188:05 pmHND - ONT
1 stop19h 03mAlaska Airlines
Deal found 11/3$647
This KAYAK deal was found by Cheapflights users on 11/2. 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 12/107:00 amONT - HND
1 stop17h 10mAlaska Airlines
Wed 12/178:05 pmHND - ONT
1 stop18h 38mAlaska Airlines
Deal found 11/2$651
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Mon 12/87:00 amONT - HND
2 stops22h 15mAlaska Airlines
Wed 12/178:55 pmHND - ONT
2 stops42h 13mAlaska Airlines
Deal found 11/3$664
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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.
Tue 11/189:47 amONT - HND
1 stop16h 43mAlaska Airlines
Thu 12/49:20 pmHND - ONT
1 stop16h 03mAlaska Airlines
Deal found 11/4$671
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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 12/288:00 amONT - HND
1 stop18h 30mAlaska Airlines
Wed 1/148:05 pmHND - ONT
1 stop19h 23mAlaska Airlines
Deal found 11/4$672
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 12/258:00 amONT - HND
1 stop18h 30mAlaska Airlines
Thu 1/159:20 pmHND - ONT
1 stop18h 08mAlaska Airlines
Deal found 11/4$679
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Wed 12/37:00 amONT - HND
1 stop17h 10mAlaska Airlines
Thu 12/49:20 pmHND - ONT
1 stop16h 03mAlaska Airlines
Deal found 11/3$683
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 11/119:47 amONT - HND
1 stop16h 43mAlaska Airlines
Tue 11/189:20 pmHND - ONT
1 stop36h 54mAlaska Airlines
Deal found 11/3$688
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 11/49:47 amONT - HND
1 stop16h 43mAlaska Airlines
Tue 11/119:20 pmHND - ONT
1 stop36h 54mAlaska Airlines
Deal found 11/3$689

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 November 4, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$401
(Alaska Airlines)

One-way from

$191
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$732
Provider with most accurate pricing for Los Angeles-Tokyo (TYO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Tokyo (TYO) flights.
Search Deals
From Ontario to Japan
Search Deals
One-way flight from Ontario to Japan
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 4, 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 1/19

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Mon 1/26

8:05 pm-10:28 pm

1 stop19h 23m

$414

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 1/27

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Wed 2/4

9:20 pm-10:28 pm

1 stop18h 08m

$426

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 1/25

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Tue 2/3

8:05 pm-10:28 pm

1 stop19h 23m

$426

OntarioTokyo

ONT - HND

ONTHND

Ontario

Fri 1/16

8:13 am-5:10 pm

1 stop39h 57m

Tokyo Haneda

Fri 1/30

8:05 pm-10:28 pm

1 stop19h 23m

$456

OntarioTokyo

ONT - HND

ONTHND

Ontario

Wed 2/25

9:50 am-7:30 pm

1 stop16h 40m

Tokyo Haneda

Wed 3/4

8:05 pm-9:55 pm

1 stop18h 50m

$481

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 2/23

9:50 am-7:30 pm

1 stop16h 40m

Tokyo Haneda

Wed 3/11

8:05 pm-9:55 pm

1 stop17h 50m

$481

OntarioTokyo

ONT - HND

ONTHND

Ontario

Fri 1/9

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Fri 1/23

8:05 pm-10:28 pm

1 stop19h 23m

$492

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 3/1

9:50 am-6:45 pm

1 stop39h 55m

Osaka Kansai Intl

Tue 3/10

8:45 pm-9:55 pm

1 stop17h 10m

$508

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 4/27

9:50 am-5:10 pm

1 stop39h 20m

Tokyo Haneda

Fri 5/8

8:15 pm-11:05 pm

1 stop18h 50m

$554

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 1/28

7:30 am-9:05 pm

2 stops20h 35m

Tokyo Narita

Tue 2/10

9:15 am-11:58 pm

2 stops31h 43m

$750

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

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, January is the cheapest month in which you can book a flight from Ontario to Japan (average of $425). Flying from Ontario to Japan in June is currently the most expensive (average of $712). 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 November 4, 2025.

One of the essential ways to save on airfare from Ontario to Japan is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 16% on airfare.

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 November 4, 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
776 reviews

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Crew

8.5

Overall

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
776 reviews
China Airlines
8.3
Very good
776 reviews

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Crew

8.5

Overall

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
7.9
Good
8,002 reviews
China Airlines
8.3
Very good
776 reviews

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Crew

8.5

Overall

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
2,799 reviews
China Airlines
8.3
Very good
776 reviews

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Crew

8.5

Overall

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
8,999 reviews
China Airlines
8.3
Very good
776 reviews

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Crew

8.5

Overall

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
11,040 reviews
China Airlines
8.3
Very good
776 reviews

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.0

Crew

8.5

Overall

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, Delta, and United Airlines fly from Ontario to Japan in about 18h 17m. The time it takes to get you to your destination can typically vary by up to 2h 18m. 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 $203. Delta flights start at $377 while deals on United Airlines start at $399 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, January is the cheapest month in which you can book a flight from Ontario to Japan (average of $425). Flying from Ontario to Japan in June is currently the most expensive (average of $712). 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 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,113FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$632Average$1,173FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$712Average$900FlexibilityNo cancel feeOn-time71%
DeltaCheapest$743Average$1,251FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$892Average$1,430FlexibilityNo cancel feeOn-time85%

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