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$372+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FUK
mag 18 — mag 251
lun 5/18
lun 5/25
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 aprile 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
mar 8/181:27 pm
ONT
-
NRT
2 stops38h 33m
Multiple Airlines
sab 8/299:30 pm
NRT
-
ONT
1 stop29h 28m
Multiple Airlines
Deal found 4/17$692
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
sab 8/298:33 pm
ONT
-
NRT
2 stops24h 27m
Multiple Airlines
sab 9/59:30 pm
NRT
-
ONT
1 stop29h 28m
Multiple Airlines
Deal found 4/16$707
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
dom 8/168:33 pm
ONT
-
NRT
2 stops24h 27m
Multiple Airlines
dom 8/239:30 pm
NRT
-
ONT
1 stop29h 28m
Multiple Airlines
Deal found 4/16$731
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
mer 4/2911:44 am
ONT
-
NRT
2 stops40h 16m
Multiple Airlines
mer 5/610:30 am
NRT
-
ONT
1 stop37h 05m
Multiple Airlines
Deal found 4/15$775
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
sab 8/228:33 pm
ONT
-
NRT
1 stop31h 27m
Multiple Airlines
ven 8/289:30 pm
NRT
-
ONT
1 stop29h 28m
Multiple Airlines
Deal found 4/17$788
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
mer 8/193:34 pm
ONT
-
NRT
2 stops36h 26m
Multiple Airlines
lun 8/319:30 pm
NRT
-
ONT
1 stop31h 12m
Multiple Airlines
Deal found 4/16$794
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
sab 5/96:00 am
ONT
-
NRT
2 stops40h 50m
Multiple Airlines
sab 5/164:25 pm
NRT
-
ONT
1 stop34h 26m
Multiple Airlines
Deal found 4/16$800
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
mar 8/188:33 pm
ONT
-
NRT
1 stop31h 27m
Multiple Airlines
sab 8/229:30 pm
NRT
-
ONT
1 stop29h 28m
Multiple Airlines
Deal found 4/16$820
This FlightHub deal was found by Cheapflights users on 4/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 11/710:50 pm
ONT
-
HND
1 stop30h 25m
China Airlines
dom 11/227:55 am
HND
-
ONT
1 stop25h 55m
China Airlines
Deal found 4/14$1,053
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
ven 8/218:33 pm
ONT
-
KIX
2 stops45h 32m
Multiple Airlines
ven 9/42:00 pm
KIX
-
ONT
1 stop20h 40m
Multiple Airlines
Deal found 4/17$1,054
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
dom 8/164:04 pm
ONT
-
HND
2 stops29h 31m
Multiple Airlines
dom 8/236:00 am
HND
-
ONT
1 stop28h 40m
Multiple Airlines
Deal found 4/16$1,054
This Kissandfly.com deal was found by Cheapflights users on 4/17. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 5/212:10 am
ONT
-
OKA
1 stop27h 35m
China Airlines
gio 5/711:55 am
OKA
-
ONT
1 stop22h 05m
China Airlines
Deal found 4/17$1,131

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 aprile 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$692
(Kiwi.com)

One-way from

$372
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$837
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. 13% 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 April 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 aprile 18, 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

OntarioNagoya

ONT - NGO

ONTNGO

Ontario

dom 8/9

12:45 am-11:20 am

1 stop18h 35m

Nagoya Chubu Centrair Intl

ven 9/11

12:20 pm-6:40 pm

1 stop22h 20m

$1,164

OntarioHiroshima

ONT - HIJ

ONTHIJ

Ontario

dom 5/3

12:10 am-10:35 am

1 stop18h 25m

Hiroshima

gio 5/14

11:35 am-6:00 pm

1 stop22h 25m

$1,188
Quickest round-trip

OntarioTokyo

ONT - HND

ONTHND

Ontario

dom 5/3

7:00 am-2:15 pm

1 stop15h 15m

Tokyo Haneda

mer 5/13

4:05 pm-5:10 pm

1 stop17h 05m

$1,204

OntarioSapporo

ONT - CTS

ONTCTS

Ontario

dom 9/13

12:45 am-1:35 pm

1 stop20h 50m

Sapporo Chitose

mar 9/29

3:05 pm-6:00 pm

1 stop18h 55m

$1,204

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

mar 5/5

6:00 am-9:25 am

2 stops35h 25m

Fukuoka

ven 5/22

10:35 am-10:34 pm

2 stops27h 59m

$1,213

OntarioTokyo

ONT - HND

ONTHND

Ontario

mer 9/16

7:00 am-10:50 pm

2 stops23h 50m

Tokyo Haneda

lun 9/28

2:00 am-5:16 pm

2 stops31h 16m

$1,219

OntarioOkinawa

ONT - OKA

ONTOKA

Ontario

sab 8/29

12:45 am-7:45 pm

1 stop27h 00m

Okinawa Naha

gio 9/3

11:55 am-6:40 pm

1 stop22h 45m

$1,219

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

lun 9/28

7:00 am-8:45 pm

2 stops21h 45m

Osaka Kansai Intl

gio 10/15

2:15 am-10:43 pm

2 stops36h 28m

$1,220

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

lun 8/31

8:00 am-2:50 pm

1 stop14h 50m

Osaka Kansai Intl

gio 9/3

4:55 pm-10:58 pm

1 stop22h 03m

$1,223

OntarioFukuoka

ONT - FUK

ONTFUK

Ontario

lun 8/31

8:00 am-5:30 pm

2 stops17h 30m

Fukuoka

gio 9/3

12:15 pm-10:58 pm

2 stops26h 43m

$1,226

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/18

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 aprile 18, 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
817 reviews

Entertainment

8.0

Comfort

8.0

Crew

8.5

Food

7.8

Boarding

8.3

Overall

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
817 reviews
China Airlines
8.3
Very good
817 reviews

Entertainment

8.0

Comfort

8.0

Crew

8.5

Food

7.8

Boarding

8.3

Overall

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
12,260 reviews
China Airlines
8.3
Very good
817 reviews

Entertainment

8.0

Comfort

8.0

Crew

8.5

Food

7.8

Boarding

8.3

Overall

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
8,422 reviews
China Airlines
8.3
Very good
817 reviews

Entertainment

8.0

Comfort

8.0

Crew

8.5

Food

7.8

Boarding

8.3

Overall

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
9,603 reviews
China Airlines
8.3
Very good
817 reviews

Entertainment

8.0

Comfort

8.0

Crew

8.5

Food

7.8

Boarding

8.3

Overall

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
11,621 reviews
China Airlines
8.3
Very good
817 reviews

Entertainment

8.0

Comfort

8.0

Crew

8.5

Food

7.8

Boarding

8.3

Overall

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, Delta, and Korean Air fly from Ontario to Japan in about 15h 15m. The time it takes to get you to your destination can typically vary by up to 8h 35m. 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. Delta flights start at $64 while deals on United Airlines start at $174 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, 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 aprile 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$632Average$1,206FlexibilityNo cancel feeOn-time70%
DeltaCheapest$743Average$1,161FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$783Average$990FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$829Average$1,105FlexibilityNo cancel feeOn-time69%

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