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$318+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
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 18, 2025.

This lol.travel deal was found by Cheapflights users on 11/18. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Thu 12/186:30 pmNRT - ONT
1 stop16h 55mAlaska Airlines
Deal found 11/18$650
This SmartFares deal was found by Cheapflights users on 11/18. 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 12/26:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Fri 12/126:30 pmNRT - ONT
1 stop21h 59mHawaiian Airlines
Deal found 11/18$662
This SmartFares deal was found by Cheapflights users on 11/17. 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.
Fri 12/56:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Fri 12/126:30 pmNRT - ONT
1 stop21h 59mHawaiian Airlines
Deal found 11/17$663
This lol.travel deal was found by Cheapflights users on 11/18. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Thu 12/116:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 11/18$673
This Trip.com deal was found by Cheapflights users on 11/18. 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.
Thu 12/46:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Thu 12/186:30 pmNRT - ONT
1 stop16h 55mHawaiian Airlines
Deal found 11/18$683
This IEagle deal was found by Cheapflights users on 11/17. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Tue 12/166:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 11/17$684
This SmartFares deal was found by Cheapflights users on 11/16. 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.
Fri 11/286:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Fri 12/56:30 pmNRT - ONT
1 stop21h 59mHawaiian Airlines
Deal found 11/16$688
This IEagle deal was found by Cheapflights users on 11/16. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Sun 12/146:30 pmNRT - ONT
1 stop21h 59mAlaska Airlines
Deal found 11/16$690
This Alaska Airlines deal was found by Cheapflights users on 11/17. 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 12/26:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Thu 12/116:30 pmNRT - ONT
1 stop21h 59mAlaska Airlines
Deal found 11/17$700
This KAYAK deal was found by Cheapflights users on 11/18. 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 12/312:13 pmONT - NRT
1 stop34h 47mAlaska Airlines
Fri 12/126:30 pmNRT - ONT
1 stop21h 59mAlaska Airlines
Deal found 11/18$701
This Alaska Airlines deal was found by Cheapflights users on 11/18. 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 11/257:50 amONT - KIX
1 stop17h 55mAlaska Airlines
Mon 12/18:45 pmKIX - ONT
1 stop16h 46mAlaska Airlines
Deal found 11/18$733
This American Airlines deal was found by Cheapflights users on 11/17. 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.
Tue 12/26:10 amONT - HND
1 stop19h 20mAmerican Airlines
Fri 12/125:55 pmHND - ONT
1 stop17h 22mAmerican Airlines
Deal found 11/17$749

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 18, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$598
(SmartFares)

One-way from

$318
(SmartFares)

Popular in

June

Cheapest in

February

Average price

$748
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. 15% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 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 18, 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

Sun 1/18

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Tue 2/3

8:05 pm-10:28 pm

1 stop19h 23m

$685

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sat 1/17

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

Wed 1/28

4:50 pm-11:58 pm

2 stops24h 08m

$697

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 12/2

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Thu 12/11

6:30 pm-11:29 pm

1 stop21h 59m

$700

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 2/24

4:54 pm-2:05 pm

2 stops28h 11m

Tokyo Haneda

Wed 3/11

4:50 pm-4:19 pm

2 stops15h 29m

$728

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 1/13

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Thu 1/29

8:05 pm-10:28 pm

1 stop19h 23m

$729

OntarioTokyo

ONT - HND

ONTHND

Ontario

Thu 1/15

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

Fri 1/30

4:50 pm-1:56 pm

1 stop14h 06m

$730

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 2/16

7:30 am-2:05 pm

1 stop37h 35m

Tokyo Haneda

Sun 3/1

4:50 pm-1:56 pm

1 stop14h 06m

$730

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 1/20

4:03 pm-4:00 pm

1 stop30h 57m

Tokyo Narita

Sat 1/31

6:30 pm-8:36 pm

1 stop19h 06m

$731

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 2/17

6:00 am-2:50 pm

1 stop15h 50m

Tokyo Haneda

Tue 2/24

4:25 pm-12:38 pm

1 stop13h 13m

$735

OntarioTokyo

ONT - HND

ONTHND

Ontario

Fri 1/9

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Fri 1/23

9:20 pm-10:28 pm

1 stop18h 08m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

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 $424). 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 18, 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 18, 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
781 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

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
781 reviews
China Airlines
8.3
Very good
781 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

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
8,003 reviews
China Airlines
8.3
Very good
781 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

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
2,809 reviews
China Airlines
8.3
Very good
781 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

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
9,020 reviews
China Airlines
8.3
Very good
781 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

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
11,047 reviews
China Airlines
8.3
Very good
781 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

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 16h. The time it takes to get you to your destination can typically vary by up to 13h 35m. Airlines will cover a distance of 5469 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 $345. Delta flights start at $370 while deals on United Airlines start at $395 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 $424). 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 18, 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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