$338 Find Cheap Flights from Ontario to Japan

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Japan departing on 4/20. 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

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Cheap Flights from Ontario to Japan

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Tokyo
Tokyo2 stops$720
Okinawa
Okinawa1 stop$878
Hiroshima
Hiroshima1 stop$847
Tokyo
Tokyo2 stops$720
Okinawa
Okinawa1 stop$878
Hiroshima
Hiroshima1 stop$847

Book Cheap Ontario to Japan Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Japan 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 Ontario to Japan

Fri, Apr 24 - Fri, May 8
Multiple Airlines Logo
12:59 am - 2:10 pm
ONT
-
NRT
45h 11m
2 stops
Multiple Airlines Logo
10:30 am - 4:38 pm
NRT
-
ONT
22h 08m
1 stop
$720Multiple Airlines
Thu, Apr 30 - Mon, May 11
Multiple Airlines Logo
9:10 am - 8:00 pm
ONT
-
NRT
18h 50m
1 stop
Multiple Airlines Logo
9:30 pm - 6:34 pm
NRT
-
ONT
37h 04m
2 stops
$723Multiple Airlines
Tue, May 12 - Thu, May 21
China Airlines Logo
12:10 am - 8:00 pm
ONT
-
FUK
27h 50m
1 stop
China Airlines Logo
9:00 pm - 6:00 pm
FUK
-
ONT
37h 00m
1 stop
$843China Airlines
Sun, Apr 26 - Wed, May 13
China Airlines Logo
12:10 am - 12:00 pm
ONT
-
KIX
19h 50m
1 stop
China Airlines Logo
2:00 pm - 6:00 pm
KIX
-
ONT
20h 00m
1 stop
$846China Airlines
Sun, Aug 9 - Tue, Aug 25
Delta Logo
7:00 am - 2:20 pm
ONT
-
HND
15h 20m
1 stop
Delta Logo
4:20 pm - 5:16 pm
HND
-
ONT
16h 56m
1 stop
$881Delta
Mon, Apr 27 - Thu, May 21
Delta Logo
7:00 am - 2:15 pm
ONT
-
HND
15h 15m
1 stop
Delta Logo
4:05 pm - 10:34 pm
HND
-
ONT
22h 29m
1 stop
$887Delta
Mon, Apr 20 - Tue, Apr 28
United Airlines Logo
6:00 am - 5:35 pm
ONT
-
FUK
19h 35m
2 stops
United Airlines Logo
12:25 pm - 6:02 pm
FUK
-
ONT
21h 37m
2 stops
$949United Airlines
Mon, Aug 31 - Fri, Sep 4
United Airlines Logo
8:00 am - 5:05 pm
ONT
-
CTS
17h 05m
2 stops
United Airlines Logo
12:25 pm - 10:58 pm
CTS
-
ONT
26h 33m
2 stops
$980United Airlines
Fri, Apr 17 - Fri, Apr 24
American Airlines Logo
11:59 pm - 7:10 pm
ONT
-
ITM
27h 11m
2 stops
American Airlines Logo
7:25 am - 1:18 pm
ITM
-
ONT
21h 53m
2 stops
$1,144American Airlines
Sat, Apr 18 - Sun, May 3
American Airlines Logo
11:59 pm - 7:10 pm
ONT
-
ITM
27h 11m
2 stops
American Airlines Logo
7:25 am - 1:18 pm
ITM
-
ONT
21h 53m
2 stops
$1,169American Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Japan flights

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

What is the cheapest month to fly from Ontario to Japan?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Japan, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Japan is January, when tickets cost $678 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,057 and $1,047 respectively.

Good to know

Low seasonAugust
Cheapest flight$338
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Ontario to Tokyo Narita Airport

FAQs - booking Japan flights

  • Can I fly with my pet from Ontario to Japan?

    Take your furry friend on your Japan trip by booking your tickets with United Airlines. They allow in-cabin pets such as small cats and dogs if there’s space available. If you’re traveling with two pets, you must book two tickets to bring both of them into the cabin. There is no limit on the weight of pets, but they should fit inside hard/soft-sided carrier boxes as per the airline policy.

  • How can I fly sustainably from Ontario to Japan?

    Firstly, take a flight with minimum layovers. If you’re flying from Ontario to Japan, you can fly into Tokyo Narita Airport and make it your base. Reduce fuel consumption by taking public or road transport such as trains, metro, bullet trains, and cabs.

  • What will be my possible layovers while flying from Ontario to Japan?

    When you fly from Ontario Airport to Tokyo Narita Airport, possible layovers will be at Seattle/Tacoma International Airport (SEA), San Francisco Airport International Airport (SFO), or Vancouver International Airport (YVR). If you’re flying into Osaka Airport, you will make stops at San Francisco International Airport and Haneda Airport.

  • How can I fly from Ontario to Japan to visit Mount Fuji?

    Japan trip is only complete with visiting Mount Fuji. Shizuoka Airport (FSZ) is close to Mount Fuji and has direct flights from Tokyo Airport. You can take a train from Tokyo to reach it, as there is a bullet train that runs between Tokyo and Mt. Fuji.

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

    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 from Ontario to Japan.

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

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

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

    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 from Ontario to Japan 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 from Ontario to Japan?

    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 from Ontario to Japan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Japan

  • If you fly from Ontario to Japan, you will likely fly into Tokyo Narita Airport (NRT). This airport is preferred if you plan to explore Japan's countryside. Air Canada, United Airlines, and Japan Airlines have frequent flights on this route. This airport is the hub for Japan Airlines and All Nippon Airways.
  • Those planning to stay in Tokyo city will prefer flying into Tokyo Haneda Airlines (HND). Hawaiian Airlines and United Airlines have one-stop flights from Ontario Airport (ONT). These flights take approximately 16 hours to fly to Japan.
  • If you plan to attend the National Cherry Blossom Festival in Japan, you should fly to Osaka. United Airlines has a one-stop flight to Osaka Kansai International Airport (KIX). It is a long-haul flight of approximately 17 hours. Before your flight, you can relax at the Aspire Lounge situated at Terminal 2. Fuel yourself up with the hot meals served at the lounge. Your business class ticket with United Airlines will give you free access.
  • Temples of Kyoto are on many travelers’ lists of things to do in Japan. You can reach Kyoto by taking a United Airlines or Hawaiian Airlines flight to Osaka Airport and then take The Limited Express Haruka to Kyoto from Osaka Airport.
  • If you’re an American passport holder, you're allowed a visa-free visit to Japan for up to 90 days. Make sure your passport has two blank pages to ease your immigration process. Keep your return tickets and hotel booking details handy at the counter.

Reviews of the top 5 airlines serving from Ontario to Japan

 
Need help choosing which airline to fly with from Ontario to Japan? 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 809 reviews
7.8Food
8.0Comfort
8.5Crew
8.0Entertainment
8.3Boarding
Airline reviews

Flight attendants. Food, entertainment and most of all, be on time.

8.0 ExcellentAnonymous, Dec 2025
PHX - TPE
Read more China Airlines reviews

Flight attendants. Food, entertainment and most of all, be on time.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

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.

Great flights, little turbulence, pilots kept stewardesses seated & safe, all staff friendly & professional

There is no entertainment on the plane. The snack is minimal. The crew was nice and professional.

Good as usual. Just wished my seat was assigned at online check in. Thanks anyways

This was my first trip with Alaska Airlines (round trip DCA to San Diego). Despite a slight delay on the return flight, I feel compelled to post a RAVE review! I cannot praise the airline and the crew enough! Everyone was kind, professional, and courteous, every step of the way- excellent service, snacks, and entertainment! On both legs of the trip I inquired whether there were any free seating upgrades and my request were granted BOTH times! I’ve flown on other airlines where they won’t do that, even when those premium seats are empty. As a customer service professional myself, I can say I left my experience feeling like a valued customer and not just a number. I NEVER expected to praise an airline lol I’ll definitely go out of my way to fly with Alaska on future trips. Thank you for such an awesome experience!

Our flight when we finally got rerouted to a different destination than we were going was fine. But 2 days was taken out of our vacation because our flit was cancelled. We understand mechanical problems and of course don’t want to be on a plane that has mechanical problems.Wish there had been another solution.

in-flight wifi was not working well. also the cabin temperature was a bit hot.

Nice crew, healthy snacks and drinks available. Flight to Seattle was short and comfortable.

had to be rerouted due to a medical emergency onboard. Alaska crew treated the patient with utmost respect and continued to keep the passengers updated the entire way through, which I appreciate. But it took 4 hours from landing until we were able to be airborne again, causing us to not get into SFO until ~2 am. I understand it was a tough situation for everyone, but that was an indecent wait.

The plane was dirty, the seats were tiny, wasnt my favorite airline tbh

I bought tickets MONTHS ago for a flight that left SAN at 14:30. That is what it says on our tickets. I was never notified of any time changes. During online check-in. I discovered the flight time had been changed to 15:45. This was unacceptable and had I been notified, I would have changed flights, or airlines. That departure time was unworkable with our plans. We called Alaska and asked for an explanation. They said flight time was changed 11/08/25. No proof of notification could be offered. We asked to be moved to an earlier flight. After much pleading, the rep said she would allow a “one time exception..” While I appreciate being moved, this was YOUR fault Alaska Airlines.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

It was nt delta. It was aeromexo. Service was awful. They served a very small drink and NO snack for a 3hr and 35min flight. Then for the first 30 min of the flight is was talk and talk over head interruption the movie/ show i picked to watch.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

it was a very short flight so my expectations were low.

Entertainment kept turning itself off. Gave up on watching a movie.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

My seat was assigned last row behind restrooms No legroom’s I’m very Pettit Still was not comfortable Food choice was excellent

The worst Airline ever. They centered my second flight and leave me in NY. They don’t have any representatives at the airport and they don’t respond to calls. Basically I got stuck. I will never purchase through there again.

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

Mediocre would be best description. Food bland. Seat biz class uncomfortable to sleep. Crew never dimmed lights completely in an overnight flight to Europe. Would avoid AA if possible.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Experience was great. The best part is the free Wi-Fi connection which helps me to work on the flight

The flight was fine. It's the satellite terminal that supports American eagle flights is what sucks. There is only one food option and everything there is way overpriced. I mean I know it's airport pricing, but it's even crazier than that. I bought a sandwich in a plastic container for $18.

The flight was really crowded. Flight attendants were just ok.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

Everything you need to know for your flight from Ontario to Japan

Information on your arrival and departure airports