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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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
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 February 17, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Mon 3/99:06 am
ONT
-
NRT
1 stop18h 49m
Multiple Airlines
Mon 3/164:00 pm
NRT
-
ONT
2 stops37h 28m
Multiple Airlines
Deal found 2/15$691
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:26 pm
ONT
-
NRT
2 stops48h 44m
Multiple Airlines
Fri 4/1710:30 am
NRT
-
ONT
1 stop22h 08m
Multiple Airlines
Deal found 2/13$763
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:02 am
ONT
-
NRT
1 stop18h 58m
Multiple Airlines
Sat 5/307:35 pm
NRT
-
ONT
2 stops16h 41m
Multiple Airlines
Deal found 2/16$772
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Wed 5/137:29 pm
ONT
-
NRT
2 stops32h 01m
Multiple Airlines
Wed 5/279:30 pm
NRT
-
ONT
1 stop27h 43m
Multiple Airlines
Deal found 2/14$782
This oojo deal was found by Cheapflights users on 2/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:10 am
ONT
-
OKA
1 stop27h 35m
China Airlines
Sat 5/1611:55 am
OKA
-
ONT
1 stop22h 05m
China Airlines
Deal found 2/15$797
This oojo deal was found by Cheapflights users on 2/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:10 am
ONT
-
NRT
1 stop24h 25m
China Airlines
Sun 4/198:00 pm
NRT
-
ONT
1 stop38h 00m
China Airlines
Deal found 2/15$802
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:20 am
ONT
-
NRT
2 stops39h 50m
Multiple Airlines
Mon 4/2010:30 am
NRT
-
ONT
1 stop22h 08m
Multiple Airlines
Deal found 2/13$803
This SmartFares deal was found by Cheapflights users on 2/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:58 pm
ONT
-
NRT
1 stop29h 02m
Multiple Airlines
Thu 9/176:00 pm
NRT
-
ONT
1 stop16h 13m
Multiple Airlines
Deal found 2/13$808
This Rumbo deal was found by Cheapflights users on 2/16. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:10 am
ONT
-
KIX
1 stop25h 55m
China Airlines
Wed 4/221:10 pm
KIX
-
ONT
1 stop20h 50m
China Airlines
Deal found 2/16$809
This oojo deal was found by Cheapflights users on 2/12. 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.
Sun 4/512:10 am
ONT
-
NRT
1 stop28h 40m
China Airlines
Sun 4/198:00 pm
NRT
-
ONT
1 stop38h 00m
China Airlines
Deal found 2/12$809
This oojo deal was found by Cheapflights users on 2/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/512:10 am
ONT
-
NRT
1 stop26h 50m
China Airlines
Mon 5/182:30 pm
NRT
-
ONT
1 stop19h 30m
China Airlines
Deal found 2/13$810
This oojo deal was found by Cheapflights users on 2/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:10 am
ONT
-
KIX
1 stop25h 55m
China Airlines
Tue 5/57:05 pm
KIX
-
ONT
1 stop38h 55m
China Airlines
Deal found 2/13$812

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 February 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$691
(Kiwi.com)

One-way from

$345
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$646
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 ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 17, 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

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 5/3

12:10 am-12:50 pm

1 stop20h 40m

Osaka Kansai Intl

Wed 5/13

1:10 pm-6:00 pm

1 stop20h 50m

$813

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sat 5/2

12:10 am-6:05 pm

1 stop25h 55m

Osaka Kansai Intl

Tue 5/12

7:05 pm-6:00 pm

1 stop38h 55m

$813

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Tue 4/7

12:10 am-6:05 pm

1 stop25h 55m

Osaka Kansai Intl

Sun 5/31

1:10 pm-6:00 pm

1 stop20h 50m

$813

OntarioSapporo

ONT - CTS

ONTCTS

Ontario

Sat 4/11

12:10 am-1:35 pm

1 stop21h 25m

Sapporo Chitose

Thu 4/23

3:05 pm-6:00 pm

1 stop18h 55m

$822

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Mon 3/30

12:10 am-8:00 pm

1 stop27h 50m

Fukuoka

Wed 8/26

9:00 pm-6:40 pm

1 stop37h 40m

$843

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Sun 5/3

12:10 am-9:55 am

1 stop17h 45m

Fukuoka

Mon 5/18

11:00 am-6:00 pm

1 stop23h 00m

$846

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Tue 4/14

12:10 am-6:05 pm

1 stop25h 55m

Fukuoka

Tue 5/26

11:00 am-6:00 pm

1 stop23h 00m

$846

OntarioOkinawa

ONT - OKA

ONTOKA

Ontario

Sat 4/18

12:10 am-7:45 pm

1 stop27h 35m

Okinawa Naha

Tue 5/19

11:55 am-6:00 pm

1 stop22h 05m

$847

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 4/20

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Thu 5/7

6:00 pm-7:05 pm

1 stop17h 05m

$876

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 3/8

6:00 am-2:05 pm

1 stop16h 05m

Tokyo Haneda

Mon 3/23

4:50 pm-5:13 pm

1 stop16h 23m

$881

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

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 $420). Flying from Ontario to Japan in June is currently the most expensive (average of $704). 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 February 17, 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
804 reviews

Entertainment

8.0

Crew

8.5

Food

7.8

Comfort

8.0

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
804 reviews
China Airlines
8.3
Very good
804 reviews

Entertainment

8.0

Crew

8.5

Food

7.8

Comfort

8.0

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
11,891 reviews
China Airlines
8.3
Very good
804 reviews

Entertainment

8.0

Crew

8.5

Food

7.8

Comfort

8.0

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
8,206 reviews
China Airlines
8.3
Very good
804 reviews

Entertainment

8.0

Crew

8.5

Food

7.8

Comfort

8.0

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
9,308 reviews
China Airlines
8.3
Very good
804 reviews

Entertainment

8.0

Crew

8.5

Food

7.8

Comfort

8.0

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
11,294 reviews
China Airlines
8.3
Very good
804 reviews

Entertainment

8.0

Crew

8.5

Food

7.8

Comfort

8.0

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 China Airlines, Delta, and Korean Air fly from Ontario to Japan in about 16h 05m. The time it takes to get you to your destination can typically vary by up to 5h 55m. 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 $52. 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 $420). Flying from Ontario to Japan in June is currently the most expensive (average of $704). 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.

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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 February 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,105FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$632Average$1,197FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$712Average$995FlexibilityNo cancel feeOn-time71%
DeltaCheapest$743Average$1,161FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$892Average$1,443FlexibilityNo cancel feeOn-time85%

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