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Cheap flights from Ontario to Japan from $349

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Japan departing on 1/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to Japan

Cheap round-trip flights

Alaska Airlines Logo
6:00 am - 4:00 pmONT-NRT
17h 00m1 stop
Alaska Airlines Logo
6:30 pm - 6:17 pmNRT-ONT
16h 47m1 stop
$587Alaska Airlines
Find Deal
Tue, Feb 10 - Tue, Feb 17
Alaska Airlines Logo
9:50 am - 7:30 pmONT-HND
16h 40m1 stop
Alaska Airlines Logo
8:05 pm - 9:55 pmHND-ONT
18h 50m1 stop
$590Alaska Airlines
Find Deal
Tue, Jan 13 - Tue, Feb 3
American Airlines Logo
11:55 pm - 6:30 pmONT-HND
25h 35m1 stop
American Airlines Logo
6:05 pm - 9:57 pmHND-ONT
20h 52m1 stop
$608American Airlines
Find Deal
Mon, Feb 16 - Tue, Feb 24
American Airlines Logo
3:00 pm - 5:05 amONT-HND
21h 05m2 stops
American Airlines Logo
8:25 pm - 9:40 pmHND-ONT
18h 15m2 stops
$612American Airlines
Find Deal
Tue, Jan 13 - Thu, Feb 12
Hawaiian Airlines Logo
6:00 am - 4:00 pmONT-NRT
17h 00m1 stop
Hawaiian Airlines Logo
6:30 pm - 10:39 amNRT-ONT
33h 09m1 stop
$646Hawaiian Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 23
Hawaiian Airlines Logo
9:50 am - 7:30 pmONT-HND
16h 40m1 stop
Hawaiian Airlines Logo
8:05 pm - 9:55 pmHND-ONT
18h 50m1 stop
$692Hawaiian Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 16
United Airlines Logo
6:00 am - 2:50 pmONT-HND
15h 50m1 stop
United Airlines Logo
4:25 pm - 12:14 pmHND-ONT
12h 49m1 stop
$706United Airlines
Find Deal
Mon, Jan 12 - Wed, Jan 28
United Airlines Logo
6:00 am - 4:40 pmONT-KIX
17h 40m1 stop
United Airlines Logo
6:35 pm - 5:43 pmKIX-ONT
16h 08m1 stop
$710United Airlines
Find Deal
Wed, Jan 14 - Fri, Jan 23
China Airlines Logo
10:50 pm - 7:15 pmONT-OKA
27h 25m1 stop
China Airlines Logo
11:55 am - 4:50 pmOKA-ONT
21h 55m1 stop
$883China Airlines
Find Deal
Sun, Mar 1 - Sat, Mar 7
China Airlines Logo
10:50 pm - 7:15 pmONT-OKA
27h 25m1 stop
China Airlines Logo
11:55 am - 4:50 pmOKA-ONT
21h 55m1 stop
$887China Airlines
Find Deal
Sun, Mar 1 - Sun, Mar 8

United Airlines flights from Ontario to Japan

Our best United Airlines deals on Ontario to Japan flight tickets
United Airlines
Jan 12
ONT6:00 amOntario
15h 50m
1 stop
HND2:50 pmTokyo Haneda
Jan 28
HND4:25 pmTokyo Haneda
12h 49m
1 stop
ONT12:14 pmOntario
$706
Find similar
United Airlines
Jan 14
ONT6:00 amOntario
17h 40m
1 stop
KIX4:40 pmOsaka Kansai Intl
Jan 23
KIX6:35 pmOsaka Kansai Intl
16h 08m
1 stop
ONT5:43 pmOntario
$710
Find similar
United Airlines
Feb 15
ONT1:52 pmOntario
21h 58m
1 stop
HND4:50 amTokyo Haneda
Feb 27
HND10:55 pmTokyo Haneda
30h 23m
1 stop
ONT12:18 pmOntario
$712
Find similar

China Airlines flights from Ontario to Japan

Our best China Airlines deals on Ontario to Japan flight tickets
China Airlines
Mar 1
ONT10:50 pmOntario
27h 25m
1 stop
OKA7:15 pmOkinawa Naha
Mar 7
OKA11:55 amOkinawa Naha
21h 55m
1 stop
ONT4:50 pmOntario
$883
Find similar
China Airlines
Mar 1
ONT10:50 pmOntario
27h 25m
1 stop
OKA7:15 pmOkinawa Naha
Mar 8
OKA11:55 amOkinawa Naha
21h 55m
1 stop
ONT4:50 pmOntario
$887
Find similar
China Airlines
Jan 17
ONT10:50 pmOntario
27h 45m
1 stop
FUK7:35 pmFukuoka
Jan 24
FUK8:35 pmFukuoka
37h 15m
1 stop
ONT4:50 pmOntario
$890
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 16, 2025.
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

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 2/10

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Tue 2/17

6:30 pm-6:17 pm

1 stop16h 47m

$587

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 1/13

9:50 am-7:30 pm

1 stop16h 40m

Tokyo Haneda

Tue 2/3

8:05 pm-9:55 pm

1 stop18h 50m

$590

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 2/16

11:55 pm-6:30 pm

1 stop25h 35m

Tokyo Haneda

Tue 2/24

6:05 pm-9:57 pm

1 stop20h 52m

$608

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 1/13

3:00 pm-5:05 am

2 stops21h 05m

Tokyo Haneda

Thu 2/12

8:25 pm-9:40 pm

2 stops18h 15m

$612

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 1/12

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Fri 1/23

6:30 pm-10:39 am

1 stop33h 09m

$646

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 1/12

9:50 am-7:30 pm

1 stop16h 40m

Tokyo Haneda

Fri 1/16

8:05 pm-9:55 pm

1 stop18h 50m

$692

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 1/12

6:00 am-2:50 pm

1 stop15h 50m

Tokyo Haneda

Wed 1/28

4:25 pm-12:14 pm

1 stop12h 49m

$706

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 1/14

6:00 am-4:40 pm

1 stop17h 40m

Osaka Kansai Intl

Fri 1/23

6:35 pm-5:43 pm

1 stop16h 08m

$710

OntarioOkinawa

ONT - OKA

ONTOKA

Ontario

Sun 3/1

10:50 pm-7:15 pm

1 stop27h 25m

Okinawa Naha

Sat 3/7

11:55 am-4:50 pm

1 stop21h 55m

$883

OntarioOkinawa

ONT - OKA

ONTOKA

Ontario

Sun 3/1

10:50 pm-7:15 pm

1 stop27h 25m

Okinawa Naha

Sun 3/8

11:55 am-4:50 pm

1 stop21h 55m

$887

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Japan from

How to get the cheapest flight ticket from Ontario to Japan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Japan?

The month of September is, on average, the cheapest month to fly to Japan from Ontario, with most prices found around $792. If you aren’t able to travel to Japan during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $810.

What is the cheapest day to depart on your flight to Japan?

On average, the least expensive day to fly to Japan from Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $911. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Ontario to Japan on a Saturday will generally be more expensive and average around $1,109. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Japan?

Flying to Japan from Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as $986 when looking at flights departing at noon. In the evening is when there is more demand to fly to Japan, so prices are often more expensive at around $1,036 per ticket.

Can stopping save me money on Ontario to Japan flights?

You could potentially save up to 9% on your flight if you consider stops on a Ontario to Japan flight.

Cheap Ontario to Japan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Japan

Direct flights

None
There are no direct flights from Ontario to Japan. There are no popular flight routes from Ontario to Japan.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to Japan?

    Prices for flights from Ontario Airport to Japan were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Japan?

  • How old do you have to be to fly from Ontario Airport to Japan?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Japan.

  • What documentation or ID do you need to fly to Japan?

    The travel and health documents required for your trip to Japan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Japan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Japan

Compare and see reviews for airlines that fly from Ontario to Japan with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $486Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
American AirlinesPriceFrom $712Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $743Free CancellationRating
7.9
7,957 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $892Free CancellationRating
7.8
2,724 reviews
Search Hawaiian Airlines flights
China AirlinesPriceFrom $902Free CancellationRating
8.3
767 reviews
Search China Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Japan?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Japan from Ontario.

Can I find flights from Ontario to Japan with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Japan from Ontario with this policy.

How can momondo help me find flights from Ontario to Japan?

Once you have performed a search for Ontario to Japan flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Japan right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Japan now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Japan and let you know when they change.

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