$359 Find Cheap Flights from Japan to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 1/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Japan to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Japan to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Japan to Ontario

Mon, Dec 22 - Tue, Jan 6
United Airlines Logo
4:25 pm - 5:43 pmHND-ONT
18h 18m1 stop
United Airlines Logo
6:00 am - 2:50 pmONT-HND
15h 50m1 stop
$598United Airlines
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Tue, Dec 23 - Sat, Jan 10
United Airlines Logo
4:25 pm - 5:43 pmHND-ONT
18h 18m1 stop
United Airlines Logo
6:32 pm - 2:50 pmONT-HND
27h 18m1 stop
$599United Airlines
Find Deal
Wed, Jan 21 - Thu, Feb 5
United Airlines Logo
4:25 pm - 12:17 pmHND-ONT
12h 52m1 stop
United Airlines Logo
6:00 am - 2:50 pmONT-HND
15h 50m1 stop
$600United Airlines
Find Deal
Wed, Jan 14 - Sat, Feb 28
Alaska Airlines Logo
8:05 pm - 10:28 pmHND-ONT
19h 23m1 stop
Alaska Airlines Logo
9:50 am - 7:30 pmONT-HND
16h 40m1 stop
$610Alaska Airlines
Find Deal
Mon, Dec 22 - Tue, Jan 6
Lufthansa Logo
4:25 pm - 5:43 pmHND-ONT
18h 18m1 stop
Lufthansa Logo
6:00 am - 2:50 pmONT-HND
15h 50m1 stop
$637Lufthansa
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Tue, Dec 23 - Sun, Jan 4
American Airlines Logo
5:30 pm - 6:16 pmNRT-ONT
17h 46m1 stop
American Airlines Logo
11:59 pm - 3:30 pmONT-NRT
22h 31m1 stop
$708American Airlines
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Wed, Dec 17 - Wed, Dec 24
China Airlines Logo
12:45 pm - 4:50 pmKIX-ONT
21h 05m1 stop
China Airlines Logo
10:50 pm - 1:20 pmONT-KIX
21h 30m1 stop
$731China Airlines
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Thu, Nov 20 - Wed, Dec 3
Alaska Airlines Logo
6:30 pm - 8:53 pmNRT-ONT
19h 23m1 stop
Alaska Airlines Logo
6:00 am - 4:00 pmONT-NRT
17h 00m1 stop
$745Alaska Airlines
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Thu, Nov 20 - Thu, Jan 15
China Airlines Logo
7:30 pm - 4:50 pmNRT-ONT
38h 20m1 stop
China Airlines Logo
10:50 pm - 6:30 pmONT-NRT
26h 40m1 stop
$746China Airlines
Find Deal
Thu, Nov 20 - Wed, Dec 3
Lufthansa Logo
4:25 pm - 12:37 pmHND-ONT
13h 12m1 stop
Lufthansa Logo
6:00 am - 2:50 pmONT-HND
15h 50m1 stop
$812Lufthansa
Find Deal

Everything you should know

Cheapest round-trip
$598
United Airlines
Mon 12/22Tue 1/6
HND - ONT • 1 stop
Cheapest one-way
$359
Alaska Airlines
Tue 1/27
HND - ONT • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What are the most popular airlines flying to Ontario?

The most popular airline among KAYAK users flying to Ontario is United Airlines, followed by American Airlines and Japan Airlines.

Good to know

Cheapest flight$359
Flight from Tokyo Haneda to Ontario

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    You’ll need to travel 3 miles to reach the Ontario city center from Ontario Airport.

  • What is the name of Ontario’s airport?

    When flying to Ontario, you'll arrive at Ontario Airport (ONT). The airport is also known as Ontario or Ontario Intl.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Friday where tickets can be as cheap as $982. On the other hand, the most expensive day to fly is Thursday, where prices are $1,030 on average.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ontario?

    The cheapest time of day to fly to Ontario is generally in the evening, when flights cost $937 on average. The most expensive time of day to fly to Ontario is generally at night, which is peak travel time and where the average cost of a ticket is $1,348.

  • How many direct flights to Ontario are there each week?

    Each week there are around 769 direct flights from within Japan to Ontario. The most common day for departures is Monday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top airline flying from Japan to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Japan to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
China AirlinesOverall score based on 776 reviews
7.8Food
8.3Boarding
8.5Crew
8.0Comfort
8.0Entertainment
Airline reviews

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

10.0 ExcellentLong, Oct 2025TPE - SGN
Read more China Airlines reviews

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

Better organization of boarding procedures. Terrible leadership guiding people to gates.

They need to improve on how the plane lands cause it was not smooth at all.

I did not like how the plane landed. It was not smooth.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

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