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$303+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
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 October 16, 2025.

This flugladen.de deal was found by Cheapflights users on 10/16. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/712:13 pmONT - NRT
1 stop34h 47mAlaska Airlines
Tue 12/236:30 pmNRT - ONT
1 stop22h 44mAlaska Airlines
Deal found 10/16$661
This KAYAK deal was found by Cheapflights users on 10/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Wed 12/176:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 10/14$667
This Tripair deal was found by Cheapflights users on 10/14. 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 Tripair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/712:13 pmONT - NRT
1 stop34h 47mHawaiian Airlines
Tue 12/236:30 pmNRT - ONT
1 stop22h 44mHawaiian Airlines
Deal found 10/14$677
This Alaska Airlines deal was found by Cheapflights users on 10/13. 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 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
Fri 12/126:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 10/13$686
This Alaska Airlines deal was found by Cheapflights users on 10/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Wed 12/246:30 pmNRT - ONT
1 stop22h 44mAlaska Airlines
Deal found 10/16$687
This Alaska Airlines deal was found by Cheapflights users on 10/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/812:13 pmONT - NRT
1 stop34h 47mAlaska Airlines
Tue 12/166:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 10/13$693
This Alaska Airlines deal was found by Cheapflights users on 10/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Tue 12/166:30 pmNRT - ONT
1 stop33h 49mAlaska Airlines
Deal found 10/16$694
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/289:59 pmONT - NRT
1 stop28h 56mMultiple Airlines
Fri 12/52:45 pmNRT - ONT
2 stops25h 46mMultiple Airlines
Deal found 10/14$698
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Thu 12/186:30 pmNRT - ONT
1 stop14h 12mAlaska Airlines
Deal found 10/15$712
This Trip.com deal was found by Cheapflights users on 10/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:40 amONT - NRT
2 stops21h 25mKorean Air
Tue 12/239:15 amNRT - ONT
2 stops24h 53mKorean Air
Deal found 10/16$717
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:00 amONT - NRT
2 stops20h 55mMultiple Airlines
Thu 11/209:25 pmNRT - ONT
1 stop19h 06mMultiple Airlines
Deal found 10/15$720
This KAYAK deal was found by Cheapflights users on 10/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:33 pmONT - NRT
1 stop27h 27mAlaska Airlines
Thu 12/256:30 pmNRT - ONT
1 stop22h 44mAlaska Airlines
Deal found 10/15$724

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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$644
(SmartFares)

One-way from

$303
(Kiwi.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 ($138 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 October 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 October 16, 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

Sun 1/11

11:53 am-4:00 pm

1 stop35h 07m

Tokyo Narita

Sat 1/17

6:30 pm-8:36 pm

1 stop19h 06m

$731

OntarioTokyo

ONT - HND

ONTHND

Ontario

Wed 1/7

6:45 am-2:05 pm

1 stop14h 20m

Tokyo Haneda

Fri 1/23

4:50 pm-3:20 pm

1 stop15h 30m

$737

OntarioNagoya

ONT - NGO

ONTNGO

Ontario

Tue 2/17

6:45 am-8:40 pm

2 stops20h 55m

Nagoya Chubu Centrair Intl

Wed 3/4

9:00 am-3:20 pm

2 stops23h 20m

$768

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 10/27

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Fri 10/31

6:30 pm-8:53 pm

1 stop18h 23m

$773

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 10/27

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Thu 11/13

6:30 pm-3:17 pm

1 stop13h 47m

$773

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 10/27

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Wed 11/5

6:30 pm-8:53 pm

1 stop19h 23m

$773

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 12/3

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Fri 12/12

6:30 pm-6:33 pm

1 stop17h 03m

$773

OntarioNagoya

ONT - NGO

ONTNGO

Ontario

Mon 2/23

6:45 am-12:30 pm

2 stops36h 45m

Nagoya Chubu Centrair Intl

Fri 2/27

9:00 am-10:38 pm

2 stops30h 38m

$775

OntarioNagoya

ONT - NGO

ONTNGO

Ontario

Mon 2/23

6:45 am-8:40 pm

2 stops20h 55m

Nagoya Chubu Centrair Intl

Fri 2/27

9:00 am-3:20 pm

2 stops23h 20m

$780

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 12/30

6:38 am-2:05 pm

1 stop14h 27m

Tokyo Haneda

Thu 1/15

4:50 pm-3:20 pm

1 stop15h 30m

$780

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

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 October 16, 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 October 16, 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
768 reviews

Food

7.8

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

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
768 reviews
China Airlines
8.3
Very good
768 reviews

Food

7.8

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

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
7,979 reviews
China Airlines
8.3
Very good
768 reviews

Food

7.8

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

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
2,780 reviews
China Airlines
8.3
Very good
768 reviews

Food

7.8

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

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
8,979 reviews
China Airlines
8.3
Very good
768 reviews

Food

7.8

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

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
11,041 reviews
China Airlines
8.3
Very good
768 reviews

Food

7.8

Comfort

8.0

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

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 Korean Air fly from Ontario to Japan in about 14h 20m. The time it takes to get you to your destination can typically vary by up to 20h 47m. 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 $345. Delta flights start at $377 while deals on Korean Air start at $380 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,171FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$712Average$900FlexibilityNo cancel feeOn-time71%
DeltaCheapest$743Average$1,251FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$892Average$1,430FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$902Average$1,193FlexibilityNo cancel feeOn-time70%

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