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$411+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Jun 23 — Jun 301
Tue 6/23
Tue 6/30
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 May 24, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:38 am
ONT
-
NRT
1 stop16h 22m
Multiple Airlines
Thu 9/249:30 pm
NRT
-
ONT
1 stop14h 47m
Multiple Airlines
Deal found 5/19$906
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am
ONT
-
NRT
2 stops41h 25m
Multiple Airlines
Wed 9/239:30 pm
NRT
-
ONT
1 stop32h 30m
Multiple Airlines
Deal found 5/19$910
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:38 am
ONT
-
NRT
1 stop16h 22m
Multiple Airlines
Mon 9/2111:30 am
NRT
-
ONT
1 stop19h 07m
Multiple Airlines
Deal found 5/19$913
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am
ONT
-
NRT
2 stops41h 25m
Multiple Airlines
Mon 9/2111:30 am
NRT
-
ONT
1 stop19h 07m
Multiple Airlines
Deal found 5/19$917
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 9/169:31 am
ONT
-
NRT
1 stop35h 34m
Multiple Airlines
Wed 9/2311:30 am
NRT
-
ONT
2 stops38h 51m
Multiple Airlines
Deal found 5/22$945
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:38 am
ONT
-
NRT
1 stop16h 22m
Multiple Airlines
Wed 9/2311:30 am
NRT
-
ONT
2 stops38h 51m
Multiple Airlines
Deal found 5/19$947
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:31 am
ONT
-
NRT
1 stop35h 34m
Multiple Airlines
Wed 9/239:30 pm
NRT
-
ONT
1 stop32h 30m
Multiple Airlines
Deal found 5/19$961
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:38 am
ONT
-
NRT
1 stop16h 22m
Multiple Airlines
Tue 9/229:30 pm
NRT
-
ONT
2 stops34h 40m
Multiple Airlines
Deal found 5/19$963
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:38 am
ONT
-
NRT
1 stop16h 22m
Multiple Airlines
Thu 9/249:30 pm
NRT
-
ONT
1 stop14h 47m
Multiple Airlines
Deal found 5/19$968
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:31 am
ONT
-
NRT
1 stop35h 34m
Multiple Airlines
Mon 9/2111:30 am
NRT
-
ONT
1 stop19h 07m
Multiple Airlines
Deal found 5/19$969
This SmartFares deal was found by Cheapflights users on 5/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:50 pm
ONT
-
KIX
1 stop19h 45m
China Airlines
Wed 12/92:30 pm
KIX
-
ONT
1 stop19h 20m
China Airlines
Deal found 5/21$1,086
This SmartFares deal was found by Cheapflights users on 5/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:45 am
ONT
-
KIX
1 stop25h 20m
China Airlines
Tue 9/82:00 pm
KIX
-
ONT
1 stop20h 40m
China Airlines
Deal found 5/20$1,087

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 May 24, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$906
(Kiwi.com)

One-way from

$411
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$866
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. 12% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 24, 2026.
Use the filters below to find and compare flights from Ontario to Japan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioOkinawa

ONT - OKA

ONTOKA

Ontario

Sun 11/1

10:50 pm-7:15 pm

1 stop27h 25m

Okinawa Naha

Wed 11/18

11:55 am-4:50 pm

1 stop21h 55m

$1,104

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Sat 8/8

12:45 am-9:55 am

1 stop17h 10m

Fukuoka

Mon 8/17

11:00 am-6:40 pm

1 stop23h 40m

$1,109

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Sat 11/7

10:50 pm-10:00 am

1 stop18h 10m

Fukuoka

Sat 11/21

11:00 am-4:50 pm

1 stop22h 50m

$1,112

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Sat 8/15

12:45 am-9:55 am

1 stop17h 10m

Fukuoka

Sun 8/30

9:00 pm-6:40 pm

1 stop37h 40m

$1,118

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 8/31

7:00 am-8:45 pm

2 stops21h 45m

Osaka Kansai Intl

Thu 9/10

12:35 pm-10:40 pm

2 stops26h 05m

$1,148

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 8/31

7:00 am-8:45 pm

2 stops21h 45m

Osaka Kansai Intl

Wed 9/9

12:35 pm-10:40 pm

2 stops26h 05m

$1,148

OntarioOkinawa

ONT - OKA

ONTOKA

Ontario

Mon 11/9

10:50 pm-7:15 pm

1 stop27h 25m

Okinawa Naha

Fri 11/13

11:55 am-4:50 pm

1 stop21h 55m

$1,155

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Mon 10/19

12:10 am-8:00 pm

1 stop27h 50m

Fukuoka

Thu 10/22

9:00 pm-6:00 pm

1 stop37h 00m

$1,163

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Tue 9/15

12:10 am-12:00 pm

1 stop19h 50m

Osaka Kansai Intl

Wed 9/30

7:05 pm-6:00 pm

1 stop38h 55m

$1,170

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 8/10

12:45 am-12:00 pm

1 stop19h 15m

Osaka Kansai Intl

Mon 8/17

2:00 pm-6:40 pm

1 stop20h 40m

$1,170

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 60 resultsSorted by cheapest first
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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, November is the cheapest month in which you can book a flight from Ontario to Japan (average of $258). Flying from Ontario to Japan in May is currently the most expensive (average of $853). 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 May 24, 2026.
See what other customers who have flown with China Airlines,Alaska Airlines, andDelta 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
826 reviews

Food

7.8

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
China Airlines
8.3
Very good
826 reviews
China Airlines
8.3
Very good
826 reviews

Food

7.8

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
Alaska Airlines
7.9
Good
12,407 reviews
China Airlines
8.3
Very good
826 reviews

Food

7.8

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
Delta
7.9
Good
8,437 reviews
China Airlines
8.3
Very good
826 reviews

Food

7.8

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
United Airlines
7.4
Good
9,750 reviews
China Airlines
8.3
Very good
826 reviews

Food

7.8

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
American Airlines
7.1
Good
11,634 reviews
China Airlines
8.3
Very good
826 reviews

Food

7.8

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.

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, United Airlines, and STARLUX Airlines fly from Ontario to Japan in about 24h 30m. The time it takes to get you to your destination can typically vary by up to 13h 09m. Airlines will cover a distance of 5352 mi. This flight may include one or multiple stops.

  • 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, November is the cheapest month in which you can book a flight from Ontario to Japan (average of $258). Flying from Ontario to Japan in May is currently the most expensive (average of $853). 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

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Top 4 airlines flying from Ontario to Japan

Discover the top 4 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 May 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$743Average$1,311FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$783Average$1,044FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$829Average$1,105FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$834Average$1,304FlexibilityNo cancel feeOn-time70%

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