HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Japan

$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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Feb 3 — Feb 101
Tue 2/3
Tue 2/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Japan with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 4, 2026.

This SmartFares deal was found by Cheapflights users on 1/2. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/86:00 amONT - NRT
1 stop17h 00mMultiple Airlines
Thu 2/196:30 pmNRT - ONT
1 stop22h 02mMultiple Airlines
Deal found 1/2$591
This SmartFares deal was found by Cheapflights users on 1/1. 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.
Sun 2/86:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Thu 2/196:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/1$592
This SmartFares deal was found by Cheapflights users on 1/2. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2011:53 amONT - NRT
1 stop35h 07mHawaiian Airlines
Thu 1/296:30 pmNRT - ONT
1 stop22h 26mHawaiian Airlines
Deal found 1/2$597
This Vliegwinkel deal was found by Cheapflights users on 1/4. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/186:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Tue 2/36:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/4$604
This Alaska Airlines deal was found by Cheapflights users on 1/3. 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.
Sun 1/256:00 amONT - NRT
1 stop17h 00mMultiple Airlines
Fri 2/66:30 pmNRT - ONT
1 stop13h 38mMultiple Airlines
Deal found 1/3$630
This Kiwi.com deal was found by Cheapflights users on 1/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:14 amONT - NRT
1 stop16h 46mMultiple Airlines
Fri 2/276:30 pmNRT - ONT
1 stop22h 02mMultiple Airlines
Deal found 1/3$636
This Alaska Airlines deal was found by Cheapflights users on 1/2. 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 1/186:00 amONT - NRT
1 stop17h 00mMultiple Airlines
Thu 2/56:30 pmNRT - ONT
1 stop13h 38mMultiple Airlines
Deal found 1/2$637
This IEagle deal was found by Cheapflights users on 1/2. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/174:03 pmONT - NRT
1 stop30h 57mMultiple Airlines
Fri 1/306:30 pmNRT - ONT
1 stop22h 26mMultiple Airlines
Deal found 1/2$643
This Alaska Airlines deal was found by Cheapflights users on 1/1. 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 1/2011:53 amONT - NRT
1 stop35h 07mMultiple Airlines
Thu 2/56:30 pmNRT - ONT
1 stop13h 38mMultiple Airlines
Deal found 1/1$644
This American Airlines deal was found by Cheapflights users on 1/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/187:16 amONT - HND
1 stop18h 14mAmerican Airlines
Tue 2/35:55 pmHND - ONT
1 stop17h 50mAmerican Airlines
Deal found 1/4$675
This Delta deal was found by Cheapflights users on 1/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/183:30 pmONT - HND
1 stop29h 35mDelta
Tue 2/34:50 pmHND - ONT
1 stop14h 06mDelta
Deal found 1/4$677
This American Airlines deal was found by Cheapflights users on 1/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/36:00 amONT - HND
1 stop19h 30mAmerican Airlines
Tue 2/105:55 pmHND - ONT
1 stop21h 53mAmerican Airlines
Deal found 1/2$685

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 January 4, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$591
(SmartFares)

One-way from

$312
(SmartFares)

Popular in

June

Cheapest in

January

Average price

$637
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 ($145 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 January 2026
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 January 4, 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

Mon 1/26

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Wed 2/4

6:30 pm-3:08 pm

1 stop13h 38m

$687

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sat 1/24

4:03 pm-4:00 pm

1 stop30h 57m

Tokyo Narita

Wed 2/4

6:30 pm-8:36 pm

1 stop19h 06m

$694

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 1/27

7:30 am-9:05 pm

2 stops20h 35m

Tokyo Narita

Fri 2/6

9:15 am-10:44 pm

2 stops30h 29m

$701

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sat 1/17

1:11 pm-2:05 pm

2 stops31h 54m

Tokyo Haneda

Wed 1/28

4:50 pm-11:58 pm

2 stops24h 08m

$703

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sat 1/24

3:30 pm-9:05 pm

2 stops36h 35m

Tokyo Narita

Thu 2/5

9:15 am-10:44 pm

2 stops30h 29m

$707

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Thu 1/15

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Sun 1/18

6:30 pm-11:56 pm

1 stop22h 26m

$713

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 3/9

6:14 am-4:00 pm

1 stop17h 46m

Tokyo Narita

Thu 3/19

6:30 pm-11:59 pm

1 stop21h 29m

$731

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Fri 1/23

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Wed 1/28

6:30 pm-8:36 pm

1 stop19h 06m

$731

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Thu 1/22

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Tue 1/27

6:30 pm-8:36 pm

1 stop19h 06m

$731

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 3/9

6:14 am-4:00 pm

1 stop17h 46m

Tokyo Narita

Tue 3/17

6:30 pm-10:44 pm

1 stop20h 14m

$731

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/2

Showing 1-10 of 60 results
1
2
3
...
6

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.

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 January 4, 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

Entertainment

8.0

Boarding

8.3

Overall

8.3

Crew

8.5

Comfort

8.0

Food

7.8

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

Entertainment

8.0

Boarding

8.3

Overall

8.3

Crew

8.5

Comfort

8.0

Food

7.8

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
11,633 reviews
China Airlines
8.3
Very good
798 reviews

Entertainment

8.0

Boarding

8.3

Overall

8.3

Crew

8.5

Comfort

8.0

Food

7.8

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
8,017 reviews
China Airlines
8.3
Very good
798 reviews

Entertainment

8.0

Boarding

8.3

Overall

8.3

Crew

8.5

Comfort

8.0

Food

7.8

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
9,138 reviews
China Airlines
8.3
Very good
798 reviews

Entertainment

8.0

Boarding

8.3

Overall

8.3

Crew

8.5

Comfort

8.0

Food

7.8

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
11,082 reviews
China Airlines
8.3
Very good
798 reviews

Entertainment

8.0

Boarding

8.3

Overall

8.3

Crew

8.5

Comfort

8.0

Food

7.8

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 American 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 11h 42m. 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 $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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Japan

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Haneda flights
Los Angeles to Narita flights
San Francisco to Haneda flights
Los Angeles to Manila flights
San Francisco to Narita flights
San Francisco to New Delhi flights
Los Angeles to Suvarnabhumi flights
San Francisco to Manila flights
Los Angeles to Ho Chi Minh City flights
Ontario to Narita flights
Los Angeles to Incheon Intl flights
Los Angeles to Taiwan Taoyuan Intl flights
San Francisco to Suvarnabhumi flights
San Francisco to Incheon Intl flights
Santa Ana to Narita flights
San Francisco to Ho Chi Minh City flights
San Francisco to Taiwan Taoyuan Intl flights
San Diego to Narita flights
San Francisco to Hong Kong flights
Burbank to Narita flights
Los Angeles to Hongqiao Intl flights
San Francisco to Mumbai flights
Ontario to Haneda flights
Ontario to Taiwan Taoyuan Intl flights
San Diego to Haneda flights
San Francisco to Hongqiao Intl flights
Los Angeles to Pu Dong flights
Los Angeles to Kansai Intl flights
Los Angeles to Hong Kong flights
Oakland to Narita flights
Los Angeles to Gimpo Intl flights
Ontario to Manila flights
Ontario to Suvarnabhumi flights
Santa Ana to Haneda flights
San Francisco to Pu Dong flights
San Francisco to Gimpo Intl flights
San Jose to New Delhi flights
San Francisco to Kansai Intl flights
San Francisco to Bangalore flights
San Francisco to Guangzhou flights
Los Angeles to Sung Shan flights
Ontario to Ho Chi Minh City flights
Sacramento to Taiwan Taoyuan Intl flights
Los Angeles to Don Mueang Intl flights
Los Angeles to New Delhi flights
San Francisco to Capital flights
Los Angeles to Singapore flights
San Francisco to Singapore flights
Las Vegas to Narita flights
Los Angeles to Denpasar flights

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 January 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,067FlexibilityNo 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$1,127FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.