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$344+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
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 December 21, 2025.

This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:05 amONT - NRT
1 stop17h 35mUnited Airlines
Mon 1/124:45 pmNRT - ONT
1 stop17h 58mUnited Airlines
Deal found 12/20$1,157
This Delta deal was found by Cheapflights users on 12/19. 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.
Fri 12/266:38 amONT - HND
1 stop14h 27mDelta
Sun 12/284:50 pmHND - ONT
1 stop17h 18mDelta
Deal found 12/19$1,157
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:40 pmONT - NRT
2 stops32h 20mUnited Airlines
Sat 1/109:00 pmNRT - ONT
3 stops37h 43mUnited Airlines
Deal found 12/21$1,183
This oojo deal was found by Cheapflights users on 12/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:50 pmONT - NGO
1 stop19h 15mChina Airlines
Tue 1/279:50 amNGO - ONT
1 stop24h 00mChina Airlines
Deal found 12/19$1,243
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 amONT - KIX
1 stop17h 40mUnited Airlines
Sun 1/118:20 amKIX - ONT
2 stops26h 23mUnited Airlines
Deal found 12/20$1,249
This SmartFares deal was found by Cheapflights users on 12/19. 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 12/264:36 pmONT - NRT
1 stop30h 24mMultiple Airlines
Fri 1/306:30 pmNRT - ONT
1 stop22h 26mMultiple Airlines
Deal found 12/19$1,263
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:40 pmONT - HND
2 stops32h 10mUnited Airlines
Sat 1/1011:35 pmHND - ONT
3 stops35h 08mUnited Airlines
Deal found 12/21$1,268
This oojo deal was found by Cheapflights users on 12/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:50 pmONT - NRT
1 stop21h 40mChina Airlines
Fri 1/309:20 amNRT - ONT
1 stop24h 30mChina Airlines
Deal found 12/20$1,269
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 12/306:00 amONT - NRT
1 stop17h 00mMultiple Airlines
Thu 1/86:30 pmNRT - ONT
1 stop13h 38mMultiple Airlines
Deal found 12/18$1,274
This American Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 12/2911:59 pmONT - NRT
2 stops23h 01mAmerican Airlines
Fri 1/96:35 pmNRT - ONT
2 stops20h 38mAmerican Airlines
Deal found 12/20$1,275
This United Airlines deal was found by Cheapflights users on 12/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amONT - HND
1 stop15h 50mUnited Airlines
Sat 1/104:25 pmHND - ONT
1 stop12h 52mUnited Airlines
Deal found 12/19$1,320
This United Airlines deal was found by Cheapflights users on 12/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:05 amONT - NRT
1 stop17h 35mUnited Airlines
Thu 1/85:35 pmNRT - ONT
1 stop20h 23mUnited Airlines
Deal found 12/19$1,321

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 December 21, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$590
(SmartFares)

One-way from

$344
(IEagle)

Popular in

June

Cheapest in

January

Average price

$977
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 ($27 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 December 21, 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

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Fri 1/30

6:30 pm-3:08 pm

1 stop13h 38m

$636

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sat 1/17

11:53 am-4:00 pm

1 stop35h 07m

Tokyo Narita

Tue 1/27

6:30 pm-3:08 pm

1 stop13h 38m

$643

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-1:56 pm

1 stop14h 06m

$692

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 1/4

6:00 am-2:05 pm

2 stops39h 05m

Tokyo Haneda

Tue 1/20

4:50 pm-1:56 pm

1 stop14h 06m

$703

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 1/4

6:00 am-2:05 pm

2 stops39h 05m

Tokyo Haneda

Thu 1/22

4:50 pm-1:56 pm

1 stop14h 06m

$703

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Thu 1/8

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Tue 1/20

6:30 pm-3:08 pm

1 stop13h 38m

$724

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 1/19

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Wed 1/28

8:05 pm-10:28 pm

1 stop19h 23m

$729

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 2/1

6:00 am-2:50 pm

1 stop15h 50m

Tokyo Haneda

Thu 2/19

4:25 pm-12:38 pm

1 stop13h 13m

$735

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 2/3

6:00 am-2:50 pm

1 stop15h 50m

Tokyo Haneda

Thu 2/12

4:25 pm-12:38 pm

1 stop13h 13m

$735

OntarioTokyo

ONT - HND

ONTHND

Ontario

Wed 1/28

8:13 am-7:30 pm

1 stop18h 17m

Tokyo Haneda

Fri 2/6

9:20 pm-10:28 pm

1 stop18h 08m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

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 December 21, 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 December 21, 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
8.3
Very good
792 reviews

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

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
8.3
Very good
792 reviews
China Airlines
8.3
Very good
792 reviews

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

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
11,492 reviews
China Airlines
8.3
Very good
792 reviews

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

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
8,021 reviews
China Airlines
8.3
Very good
792 reviews

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

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
9,100 reviews
China Airlines
8.3
Very good
792 reviews

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

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
11,051 reviews
China Airlines
8.3
Very good
792 reviews

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

Overall

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 Delta, United Airlines, and American Airlines fly from Ontario to Japan in about 16h 20m. The time it takes to get you to your destination can typically vary by up to 13h 15m. 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 Frontier, which is currently one of the cheapest options available, starting at $59. 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

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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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,063FlexibilityNo 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%

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