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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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Jan 6 — Jan 131
Di 1/6
Di 1/13
1 adult, Economy
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Cheap 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 Dezember 7, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/5. 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.
Fr 12/56:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Sa 12/66:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 12/5$704
This Alaska Airlines deal was found by Cheapflights users on 12/5. 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.
Sa 12/66:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Sa 12/136:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 12/5$712
This IEagle deal was found by Cheapflights users on 12/5. 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.
Mi 12/106:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Mi 12/176:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 12/5$714
This Alaska Airlines deal was found by Cheapflights users on 12/5. 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.
Fr 12/56:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Do 12/186:30 pmNRT - ONT
1 stop22h 44mAlaska Airlines
Deal found 12/5$722
This Alaska Airlines deal was found by Cheapflights users on 12/5. 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.
Fr 12/56:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Fr 12/126:30 pmNRT - ONT
1 stop21h 59mAlaska Airlines
Deal found 12/5$730
This Alaska Airlines deal was found by Cheapflights users on 12/6. 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.
Mo 12/86:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Mi 1/146:30 pmNRT - ONT
1 stop13h 38mAlaska Airlines
Deal found 12/6$772
This Alaska Airlines deal was found by Cheapflights users on 12/6. 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.
So 12/712:13 pmONT - NRT
1 stop34h 47mAlaska Airlines
Di 12/166:30 pmNRT - ONT
1 stop17h 03mAlaska Airlines
Deal found 12/6$780
This Alaska Airlines deal was found by Cheapflights users on 12/5. 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.
Mo 12/87:33 pmONT - NRT
1 stop27h 27mAlaska Airlines
Fr 12/126:30 pmNRT - ONT
1 stop21h 59mAlaska Airlines
Deal found 12/5$788
This Jetabroad deal was found by Cheapflights users on 12/5. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 12/612:13 pmONT - NRT
1 stop34h 47mHawaiian Airlines
Sa 12/136:30 pmNRT - ONT
1 stop17h 03mHawaiian Airlines
Deal found 12/5$795
This Alaska Airlines deal was found by Cheapflights users on 12/6. 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.
So 12/76:00 amONT - NRT
1 stop17h 00mAlaska Airlines
Fr 12/126:30 pmNRT - ONT
1 stop21h 59mAlaska Airlines
Deal found 12/6$797
This American Airlines deal was found by Cheapflights users on 12/7. 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.
Mo 12/86:00 amONT - HND
1 stop19h 30mAmerican Airlines
Fr 12/125:55 pmHND - ONT
1 stop21h 33mAmerican Airlines
Deal found 12/7$821
This Delta deal was found by Cheapflights users on 12/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 12/76:40 amONT - HND
1 stop14h 25mDelta
Fr 12/124:50 pmHND - ONT
1 stop22h 57mDelta
Deal found 12/6$822

Find flight deals from Ontario to Japan

Keep the following information in mind while searching for Ontario to Japan flight deals. Data was last updated Dezember 7, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$627
(Alaska Airlines)

One-way from

$345
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$976
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 ($147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 Dezember 7, 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

Mi 1/28

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

So 2/8

9:20 pm-10:28 pm

1 stop18h 08m

$673

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Do 1/22

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Do 1/29

6:30 pm-3:08 pm

1 stop13h 38m

$674

OntarioTokyo

ONT - HND

ONTHND

Ontario

Di 1/20

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

Di 2/3

4:50 pm-11:58 pm

2 stops24h 08m

$698

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mi 2/11

7:30 am-9:05 pm

2 stops20h 35m

Tokyo Narita

Fr 2/27

9:15 am-10:37 pm

2 stops30h 22m

$700

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mi 1/7

7:30 am-9:05 pm

2 stops20h 35m

Tokyo Narita

Fr 1/16

9:15 am-1:56 pm

2 stops45h 41m

$706

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sa 1/24

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Sa 1/31

9:20 pm-10:28 pm

1 stop18h 08m

$711

OntarioTokyo

ONT - HND

ONTHND

Ontario

Di 1/20

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Mo 2/2

9:20 pm-10:28 pm

1 stop18h 08m

$723

OntarioTokyo

ONT - HND

ONTHND

Ontario

So 1/25

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Di 2/3

8:05 pm-10:28 pm

1 stop19h 23m

$729

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sa 1/10

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

Mo 1/26

4:50 pm-10:51 pm

1 stop23h 01m

$731

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mi 2/4

6:00 am-2:50 pm

1 stop15h 50m

Tokyo Haneda

Di 2/17

4:25 pm-12:48 pm

1 stop13h 23m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/5

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 $426). 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 Dezember 7, 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 Dezember 7, 2025.
See what other customers who have flown with China Airlines, Alaska Airlines, and Delta 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
8.2
Very good
788 reviews

Overall

8.2

Comfort

8.0

Crew

8.5

Food

7.8

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
China Airlines
8.2
Very good
788 reviews
China Airlines
8.2
Very good
788 reviews

Overall

8.2

Comfort

8.0

Crew

8.5

Food

7.8

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
Alaska Airlines
8.0
Very good
11,413 reviews
China Airlines
8.2
Very good
788 reviews

Overall

8.2

Comfort

8.0

Crew

8.5

Food

7.8

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
Delta
7.9
Good
8,013 reviews
China Airlines
8.2
Very good
788 reviews

Overall

8.2

Comfort

8.0

Crew

8.5

Food

7.8

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
United Airlines
7.4
Good
9,076 reviews
China Airlines
8.2
Very good
788 reviews

Overall

8.2

Comfort

8.0

Crew

8.5

Food

7.8

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
American Airlines
7.2
Good
11,042 reviews
China Airlines
8.2
Very good
788 reviews

Overall

8.2

Comfort

8.0

Crew

8.5

Food

7.8

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.

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 15h 50m. The time it takes to get you to your destination can typically vary by up to 23h 35m. 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 $356. Hawaiian Airlines flights start at $366 while deals on United Airlines start at $457 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 $426). 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 Dezember 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,053FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$712Average$966FlexibilityNo cancel feeOn-time71%
DeltaCheapest$743Average$1,251FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$892Average$1,430FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$902Average$1,091FlexibilityNo cancel feeOn-time70%

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