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$449+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
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 June 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:43 pm
ONT
-
NRT
1 stop28h 42m
Multiple Airlines
Sat 9/511:30 am
NRT
-
ONT
1 stop22h 22m
Multiple Airlines
Deal found 6/8$881
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 11/167:00 am
ONT
-
HND
1 stop15h 05m
Delta
Tue 11/244:50 pm
HND
-
ONT
1 stop22h 53m
Delta
Deal found 6/10$948
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 10/79:30 pm
NRT
-
ONT
1 stop32h 30m
Multiple Airlines
Deal found 6/5$990
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/176:00 am
ONT
-
NRT
1 stop16h 20m
United Airlines
Wed 11/254:45 pm
NRT
-
ONT
1 stop12h 35m
United Airlines
Deal found 6/10$998
This United Airlines deal was found by Cheapflights users on 6/10. 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 12/26:00 am
ONT
-
HND
1 stop15h 50m
United Airlines
Thu 12/104:25 pm
HND
-
ONT
1 stop12h 55m
United Airlines
Deal found 6/10$998
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 9/85:43 pm
ONT
-
NRT
1 stop29h 42m
Multiple Airlines
Wed 9/239:30 pm
NRT
-
ONT
1 stop32h 30m
Multiple Airlines
Deal found 6/9$1,017
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:33 pm
ONT
-
NRT
1 stop26h 52m
Multiple Airlines
Tue 9/19:30 pm
NRT
-
ONT
1 stop31h 12m
Multiple Airlines
Deal found 6/7$1,021
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 8/263:34 pm
ONT
-
NRT
2 stops34h 16m
Multiple Airlines
Mon 8/319:30 pm
NRT
-
ONT
1 stop31h 12m
Multiple Airlines
Deal found 6/9$1,029
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 10/111:38 am
ONT
-
NRT
1 stop16h 22m
Multiple Airlines
Wed 10/72:35 pm
NRT
-
ONT
2 stops17h 35m
Multiple Airlines
Deal found 6/9$1,031
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:26 pm
ONT
-
NRT
1 stop37h 34m
Multiple Airlines
Wed 11/119:25 pm
NRT
-
ONT
1 stop33h 15m
Multiple Airlines
Deal found 6/6$1,047
This Delta deal was found by Cheapflights users on 6/9. 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.
Mon 11/27:00 am
ONT
-
HND
1 stop15h 05m
Delta
Mon 11/164:50 pm
HND
-
ONT
1 stop22h 53m
Delta
Deal found 6/9$1,048
This BusinessClass deal was found by Cheapflights users on 6/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:00 am
ONT
-
KIX
1 stop17h 45m
ANA
Wed 11/186:35 pm
KIX
-
ONT
1 stop21h 31m
ANA
Deal found 6/10$1,053

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 June 10, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$881
(Kiwi.com)

One-way from

$449
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$1,057
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 ($120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 10, 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

Sat 8/1

12:45 am-7:45 pm

1 stop27h 00m

Okinawa Naha

Tue 8/18

11:55 am-6:40 pm

1 stop22h 45m

$1,091

OntarioOkinawa

ONT - OKA

ONTOKA

Ontario

Tue 8/18

12:45 am-7:45 pm

1 stop27h 00m

Okinawa Naha

Wed 8/26

8:55 pm-6:40 pm

1 stop37h 45m

$1,110

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

Sun 9/20

12:10 am-9:55 am

1 stop17h 45m

Fukuoka

Mon 9/28

9:00 pm-6:00 pm

1 stop37h 00m

$1,110

OntarioNagoya

ONT - NGO

ONTNGO

Ontario

Mon 12/7

6:00 am-8:30 pm

3 stops21h 30m

Nagoya Chubu Centrair Intl

Mon 12/14

2:00 pm-3:27 pm

2 stops18h 27m

$1,114

OntarioNagoya

ONT - NGO

ONTNGO

Ontario

Sun 8/16

12:45 am-9:05 pm

1 stop28h 20m

Nagoya Chubu Centrair Intl

Wed 8/19

9:55 am-6:40 pm

1 stop24h 45m

$1,127

OntarioHiroshima

ONT - HIJ

ONTHIJ

Ontario

Mon 10/19

12:10 am-10:35 am

1 stop18h 25m

Hiroshima

Tue 11/3

11:25 am-4:50 pm

1 stop22h 25m

$1,129

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 9/1

6:20 am-2:20 pm

1 stop16h 00m

Tokyo Haneda

Thu 9/10

4:20 pm-10:40 pm

1 stop22h 20m

$1,131

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 9/1

6:01 pm-2:20 pm

1 stop28h 19m

Tokyo Haneda

Thu 9/24

4:20 pm-10:40 pm

1 stop22h 20m

$1,137

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sun 9/13

7:00 am-9:05 pm

2 stops22h 05m

Tokyo Narita

Mon 10/5

7:00 pm-5:17 pm

2 stops38h 17m

$1,150

OntarioSapporo

ONT - CTS

ONTCTS

Ontario

Thu 10/8

12:10 am-1:35 pm

1 stop21h 25m

Sapporo Chitose

Mon 10/19

3:05 pm-6:00 pm

1 stop18h 55m

$1,150

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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 June 10, 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
828 reviews

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Overall

8.3

Comfort

8.0

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
828 reviews
China Airlines
8.3
Very good
828 reviews

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Overall

8.3

Comfort

8.0

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
12,480 reviews
China Airlines
8.3
Very good
828 reviews

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Overall

8.3

Comfort

8.0

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
8,395 reviews
China Airlines
8.3
Very good
828 reviews

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Overall

8.3

Comfort

8.0

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
9,802 reviews
China Airlines
8.3
Very good
828 reviews

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Overall

8.3

Comfort

8.0

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
11,640 reviews
China Airlines
8.3
Very good
828 reviews

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Overall

8.3

Comfort

8.0

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 Delta fly from Ontario to Japan in about 16h. The time it takes to get you to your destination can typically vary by up to 11h. Airlines will cover a distance of 5505 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

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

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 June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$743Average$1,311FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$783Average$990FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$820Average$1,265FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$998Average$1,399FlexibilityNo cancel feeOn-time70%

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