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$398+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheap 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 30, 2025.

Round-trip from

$765
(Ovago)

One-way from

$400
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$1,118
From Ontario to Japan
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One-way flight from Ontario to Japan
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Highest demand for flights based on searches. 13% potential increase in price ($130 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 30, 2025.

This Ovago deal was found by Cheapflights users on 6/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:00 amONT - NRT
2 stops23h 05mKorean Air
Mon 9/85:20 pmNRT - ONT
2 stops39h 51mKorean Air
Deal found 6/28$765
This Delta deal was found by Cheapflights users on 6/29. 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 8/316:00 amONT - HND
1 stop16h 15mDelta
Thu 9/184:05 pmHND - ONT
1 stop16h 55mDelta
Deal found 6/29$768
This Ovago deal was found by Cheapflights users on 6/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:00 amONT - HND
2 stops24h 50mKorean Air
Wed 9/32:00 amHND - ONT
2 stops31h 11mKorean Air
Deal found 6/29$770
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Wed 8/276:17 amONT - HND
2 stops19h 08mAmerican Airlines
Thu 9/411:55 amHND - ONT
2 stops20h 10mAmerican Airlines
Deal found 6/29$771
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Wed 8/276:17 amONT - NRT
2 stops18h 13mAmerican Airlines
Thu 9/45:20 pmNRT - ONT
2 stops16h 56mAmerican Airlines
Deal found 6/29$772
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 8/266:05 amONT - NRT
2 stops21h 30mDelta
Wed 9/102:00 pmNRT - ONT
2 stops24h 40mDelta
Deal found 6/29$782
This Korean Air deal was found by Cheapflights users on 6/29. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:00 amONT - NGO
2 stops38h 30mKorean Air
Fri 9/121:40 pmNGO - ONT
2 stops19h 20mKorean Air
Deal found 6/29$803
This Delta deal was found by Cheapflights users on 6/28. 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 10/266:45 amONT - FUK
2 stops39h 55mDelta
Thu 10/301:45 pmFUK - ONT
2 stops24h 57mDelta
Deal found 6/28$808
This Korean Air deal was found by Cheapflights users on 6/27. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:45 amONT - FUK
2 stops34h 35mKorean Air
Thu 10/301:45 pmFUK - ONT
2 stops24h 57mKorean Air
Deal found 6/27$813
This Gurufare deal was found by Cheapflights users on 6/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/156:00 amONT - NRT
1 stop17h 30mJapan Airlines
Tue 7/225:45 pmNRT - ONT
1 stop16h 19mJapan Airlines
Deal found 6/29$814
This Delta deal was found by Cheapflights users on 6/27. 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 11/96:43 amONT - KIX
2 stops35h 02mDelta
Thu 11/136:10 pmKIX - ONT
2 stops40h 07mDelta
Deal found 6/27$815
This United Airlines deal was found by Cheapflights users on 6/28. 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 8/276:00 amONT - HND
1 stop15h 55mUnited Airlines
Thu 9/410:55 pmHND - ONT
1 stop13h 38mUnited Airlines
Deal found 6/28$816

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 30, 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

Wed 8/27

6:00 am-9:05 pm

2 stops23h 05m

Tokyo Narita

Mon 9/8

5:20 pm-5:11 pm

2 stops39h 51m

$765

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 8/31

6:00 am-2:15 pm

1 stop16h 15m

Tokyo Haneda

Thu 9/18

4:05 pm-5:00 pm

1 stop16h 55m

$768

OntarioTokyo

ONT - HND

ONTHND

Ontario

Wed 8/27

6:00 am-10:50 pm

2 stops24h 50m

Tokyo Haneda

Wed 9/3

2:00 am-5:11 pm

2 stops31h 11m

$770

OntarioTokyo

ONT - HND

ONTHND

Ontario

Wed 8/27

6:17 am-5:25 pm

2 stops19h 08m

Tokyo Haneda

Thu 9/4

11:55 am-4:05 pm

2 stops20h 10m

$771

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 8/27

6:17 am-4:30 pm

2 stops18h 13m

Tokyo Narita

Thu 9/4

5:20 pm-6:16 pm

2 stops16h 56m

$772

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 8/26

6:05 am-7:35 pm

2 stops21h 30m

Tokyo Narita

Wed 9/10

2:00 pm-10:40 pm

2 stops24h 40m

$782

OntarioNagoya

ONT - NGO

ONTNGO

Ontario

Mon 9/8

6:00 am-12:30 pm

2 stops38h 30m

Nagoya Chubu Centrair Intl

Fri 9/12

1:40 pm-5:00 pm

2 stops19h 20m

$803

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 7/15

6:00 am-3:30 pm

1 stop17h 30m

Tokyo Narita

Tue 7/22

5:45 pm-6:04 pm

1 stop16h 19m

$814

OntarioTokyo

ONT - HND

ONTHND

Ontario

Wed 8/27

6:00 am-1:55 pm

1 stop15h 55m

Tokyo Haneda

Tue 9/9

10:55 pm-8:33 pm

1 stop13h 38m

$816

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 9/28

6:00 am-4:55 pm

2 stops42h 55m

Osaka Kansai Intl

Wed 10/15

12:35 pm-11:46 pm

2 stops27h 11m

$816

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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, February is the cheapest month in which you can book a flight from Ontario to Japan (average of $871). Flying from Ontario to Japan in December is currently the most expensive (average of $1,624). 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 June 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Japan as you normally would.

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 30, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air, and Korean Air 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.
STARLUX Airlines
9.0
Wonderful
187 reviews

Comfort

9.0

Boarding

9.0

Food

8.8

Crew

9.3

Entertainment

9.0

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful
187 reviews
STARLUX Airlines
9.0
Wonderful
187 reviews

Comfort

9.0

Boarding

9.0

Food

8.8

Crew

9.3

Entertainment

9.0

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,210 reviews
STARLUX Airlines
9.0
Wonderful
187 reviews

Comfort

9.0

Boarding

9.0

Food

8.8

Crew

9.3

Entertainment

9.0

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,101 reviews
STARLUX Airlines
9.0
Wonderful
187 reviews

Comfort

9.0

Boarding

9.0

Food

8.8

Crew

9.3

Entertainment

9.0

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,504 reviews
STARLUX Airlines
9.0
Wonderful
187 reviews

Comfort

9.0

Boarding

9.0

Food

8.8

Crew

9.3

Entertainment

9.0

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
745 reviews
STARLUX Airlines
9.0
Wonderful
187 reviews

Comfort

9.0

Boarding

9.0

Food

8.8

Crew

9.3

Entertainment

9.0

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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.

  • What are the cheapest airlines to fly from Ontario to Japan one-way?

    To fly one-way, consider booking your trip with Japan Airlines, which is currently one of the cheapest options available, starting at $400. Hawaiian Airlines flights start at $412 while deals on Korean Air start at $417 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, February is the cheapest month in which you can book a flight from Ontario to Japan (average of $871). Flying from Ontario to Japan in December is currently the most expensive (average of $1,624). 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 8 airlines flying from Ontario to Japan

Discover the top 8 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,179FlexibilityNo cancel feeOn-time69%
ZIPAIRCheapest$591Average$778FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$660Average$1,145FlexibilityNo cancel feeOn-time79%
ANACheapest$686Average$1,050FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$712Average$966FlexibilityNo cancel feeOn-time71%
DeltaCheapest$895Average$1,148FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$966Average$1,430FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$967Average$1,192FlexibilityNo cancel feeOn-time70%

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