ONT - KIX

$373 Find Cheap Flights from Ontario to Osaka

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 Kansai Intl departing on 9/28. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Osaka Kansai Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Osaka, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Osaka, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Osaka (ONT-KIX)

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

Mon, Jan 12 - Wed, Jan 28
Alaska Airlines Logo
9:50 am - 6:45 pmONT-KIX
39h 55m1 stop
Alaska Airlines Logo
8:45 pm - 9:55 pmKIX-ONT
18h 10m1 stop
$627Alaska Airlines
Find Deal
Tue, Jan 20 - Fri, Jan 30
Alaska Airlines Logo
9:50 am - 6:45 pmONT-KIX
39h 55m1 stop
Alaska Airlines Logo
8:45 pm - 9:55 pmKIX-ONT
18h 10m1 stop
$652Alaska 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 - 8:58 pmKIX-ONT
19h 23m2 stops
$715United Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 4
Korean Air Logo
7:35 am - 8:45 pmONT-KIX
21h 10m2 stops
Korean Air Logo
11:55 am - 5:10 pmKIX-ONT
22h 15m2 stops
$741Korean Air
Find Deal
Thu, Feb 5 - Fri, Feb 13
United Airlines Logo
6:00 am - 4:40 pmONT-KIX
17h 40m1 stop
United Airlines Logo
6:35 pm - 6:00 pmKIX-ONT
16h 25m1 stop
$753United Airlines
Find Deal
Tue, Mar 3 - Fri, Mar 6
Delta Logo
6:45 am - 8:45 pmONT-KIX
21h 00m2 stops
Delta Logo
11:55 am - 10:38 pmKIX-ONT
27h 43m2 stops
$761Delta
Find Deal
Tue, Oct 21 - Tue, Nov 4
Korean Air Logo
7:35 am - 9:00 pmONT-KIX
21h 25m2 stops
Korean Air Logo
9:00 am - 5:10 pmKIX-ONT
25h 10m2 stops
$766Korean Air
Find Deal
Thu, Feb 26 - Fri, Mar 6
Delta Logo
6:45 am - 8:45 pmONT-KIX
21h 00m2 stops
Delta Logo
2:00 pm - 10:38 pmKIX-ONT
25h 38m2 stops
$768Delta
Find Deal
Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
6:15 am - 6:50 pmONT-KIX
20h 35m2 stops
American Airlines Logo
5:50 pm - 6:20 pmKIX-ONT
17h 30m2 stops
$794American Airlines
Find Deal
Thu, Nov 27 - Fri, Dec 12
American Airlines Logo
12:55 pm - 6:50 pmONT-KIX
36h 55m2 stops
American Airlines Logo
5:50 pm - 10:28 pmKIX-ONT
21h 38m2 stops
$806American Airlines
Find Deal

Everything you should know

Top airlines
Alaska Airlines
Cheapest • from $627 (round-trip)
China Airlines
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$627
Alaska Airlines
Mon 1/12Wed 1/28
ONT - KIX • 1 stop
Cheapest one-way
$373
Alaska Airlines
Sun 9/28
ONT - KIX • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kansai Intl!
Booking Insights

KAYAK's insights & trends for Ontario to Kansai Intl flights

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

Which airlines provide the cheapest flights from Ontario to Osaka?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Osaka were found on Alaska Airlines ($627) and United Airlines ($715).

Good to know

Low seasonAugust
Cheapest flight$373
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Ontario to Osaka

When to book flights from Ontario to Kansai Intl

Are your dates flexible? Find out the best times to travel from Ontario to Kansai Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Osaka flights

  • What is the cheapest flight from Ontario to Osaka Kansai Intl Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Osaka Kansai Intl Airport was $373 for a one-way ticket and $627 for a round-trip.

  • Do I need a passport to fly between Ontario and Osaka?

    Yes, you’ll need a passport to travel to Osaka from Ontario.

  • Which aircraft models fly most regularly from Ontario to Osaka?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Osaka?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Ontario and Osaka, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Osaka, China Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Osaka are China Airlines and United Airlines. With an average price for the route of $1,141 and an overall rating of 8.3, China Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,087 and an overall rating of 7.4.

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

    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 Osaka.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka from 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 from Ontario to Osaka?

    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 Osaka with an airline and back to Ontario with another airline. Booking your flights between Ontario and KIX can sometimes prove cheaper using this method.

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

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

Reviews of the top airlines flying from Ontario to Kansai Intl

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Osaka. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Kansai Intl? 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 767 reviews
8.0Comfort
7.8Food
8.3Boarding
8.5Crew
8.0Entertainment
Airline reviews

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

10.0 ExcellentAnonymous, Aug 2025SEA - TPE
Read more China Airlines reviews

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.

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.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Staff was so nice and very helpful with directions aswell!

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Everything you need to know for your flight from Ontario to Kansai Intl

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.