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$312+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
feb. 7 — feb. 141
sáb. 2/7
sáb. 2/14
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 enero 8, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$590
(SmartFares)

One-way from

$312
(SmartFares)

Popular in

June

Cheapest in

January

Average price

$625
Provider with most accurate pricing for Los Angeles-Tokyo (TYO) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Tokyo (TYO) flights.
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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. 16% potential increase in price ($155 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 enero 8, 2026.

This SmartFares deal was found by Cheapflights users on 1/6. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/176:14 amONT - NRT
1 stop16h 46mHawaiian Airlines
jue. 2/266:30 pmNRT - ONT
1 stop22h 02mHawaiian Airlines
Deal found 1/6$590
This Vliegwinkel deal was found by Cheapflights users on 1/6. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 1/256:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
mar. 2/106:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/6$605
This Trip.com deal was found by Cheapflights users on 1/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/16:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
mar. 2/106:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/7$621
This SmartFares deal was found by Cheapflights users on 1/7. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/16:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
lun. 2/96:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/7$628
This SmartFares deal was found by Cheapflights users on 1/7. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/711:53 amONT - NRT
1 stop35h 07mHawaiian Airlines
lun. 2/236:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/7$636
This Alaska Airlines deal was found by Cheapflights users on 1/8. 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.
lun. 1/266:00 amONT - NRT
1 stop17h 00mMultiple Airlines
mié. 2/46:30 pmNRT - ONT
1 stop19h 06mMultiple Airlines
Deal found 1/8$637
This SmartFares deal was found by Cheapflights users on 1/8. 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.
dom. 2/86:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
mié. 2/186:30 pmNRT - ONT
1 stop21h 14mHawaiian Airlines
Deal found 1/8$640
This IEagle deal was found by Cheapflights users on 1/6. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/2011:53 amONT - NRT
1 stop35h 07mMultiple Airlines
vie. 1/306:30 pmNRT - ONT
1 stop22h 26mMultiple Airlines
Deal found 1/6$643
This Alaska Airlines deal was found by Cheapflights users on 1/8. 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.
sáb. 1/244:03 pmONT - NRT
1 stop30h 57mMultiple Airlines
vie. 2/66:30 pmNRT - ONT
1 stop22h 26mMultiple Airlines
Deal found 1/8$644
This SmartFares deal was found by Cheapflights users on 1/7. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/74:03 pmONT - NRT
1 stop30h 57mHawaiian Airlines
mié. 2/256:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/7$646
This Alaska Airlines deal was found by Cheapflights users on 1/8. 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.
lun. 2/911:53 amONT - NRT
1 stop35h 07mMultiple Airlines
mar. 2/176:30 pmNRT - ONT
1 stop33h 38mMultiple Airlines
Deal found 1/8$650
This American Airlines deal was found by Cheapflights users on 1/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 1/256:00 amONT - HND
1 stop19h 30mAmerican Airlines
mar. 2/105:55 pmHND - ONT
1 stop17h 50mAmerican Airlines
Deal found 1/6$676

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 enero 8, 2026.
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

mié. 2/25

6:14 am-4:00 pm

1 stop16h 46m

Tokyo Narita

jue. 3/5

6:30 pm-3:08 pm

1 stop13h 38m

$693

OntarioTokyo

ONT - HND

ONTHND

Ontario

mar. 2/3

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

mié. 2/11

4:50 pm-11:58 pm

2 stops24h 08m

$699

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

jue. 2/26

6:14 am-4:00 pm

1 stop16h 46m

Tokyo Narita

sáb. 3/14

6:30 pm-11:32 pm

1 stop21h 02m

$713

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

jue. 1/22

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

dom. 2/8

6:30 pm-3:08 pm

1 stop13h 38m

$713

OntarioTokyo

ONT - HND

ONTHND

Ontario

lun. 1/26

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

sáb. 2/7

4:50 pm-1:56 pm

1 stop14h 06m

$731

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

dom. 1/18

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

jue. 2/5

6:30 pm-3:08 pm

1 stop13h 38m

$731

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

mar. 3/10

6:14 am-4:00 pm

1 stop17h 46m

Tokyo Narita

mié. 3/18

6:30 pm-6:13 pm

1 stop15h 43m

$731

OntarioTokyo

ONT - HND

ONTHND

Ontario

mar. 2/3

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

sáb. 2/14

4:50 pm-10:37 pm

1 stop22h 47m

$732

OntarioTokyo

ONT - HND

ONTHND

Ontario

mar. 2/10

6:00 am-2:50 pm

1 stop15h 50m

Tokyo Haneda

jue. 2/26

4:25 pm-12:38 pm

1 stop13h 13m

$735

OntarioTokyo

ONT - HND

ONTHND

Ontario

mié. 2/18

6:09 am-2:50 pm

1 stop15h 41m

Tokyo Haneda

mié. 2/25

4:25 pm-12:48 pm

1 stop13h 23m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

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 $419). 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.

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 enero 8, 2026.
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
8.3
Very good
798 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Entertainment

8.0

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
8.3
Very good
798 reviews
China Airlines
8.3
Very good
798 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Entertainment

8.0

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
11,672 reviews
China Airlines
8.3
Very good
798 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Entertainment

8.0

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
8,032 reviews
China Airlines
8.3
Very good
798 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Entertainment

8.0

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
9,143 reviews
China Airlines
8.3
Very good
798 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Entertainment

8.0

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
11,097 reviews
China Airlines
8.3
Very good
798 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Food

7.8

Crew

8.5

Entertainment

8.0

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 Delta, United Airlines, and Korean Air 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 21h 50m. 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 Frontier, which is currently one of the cheapest options available, starting at $65. American Airlines flights start at $148 while deals on Southwest start at $148 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 $419). 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 enero 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,054FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$712Average$980FlexibilityNo cancel feeOn-time71%
DeltaCheapest$743Average$1,251FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$892Average$1,437FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$902Average$1,138FlexibilityNo cancel feeOn-time70%

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