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Cheap Flights from Ontario (ONT) to Osaka (OSAA)

Compare Ontario International to Osaka flight deals

Find the cheapest month or even day of the year to fly to Osaka

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Flight deals from Ontario International to Osaka

Looking for a cheap last-minute deal or the best return flight from Ontario International to Osaka? Find the lowest prices on one-way and return tickets right here.
Osaka.$1,242 per passenger.Departing Mon, 19 Jan, returning Mon, 26 Jan.Return flight with Japan Airlines.Outbound indirect flight with Japan Airlines, departs from Ontario International on Mon, 19 Jan, arriving in Kansai International (Osaka).Inbound indirect flight with Japan Airlines, departs from Kansai International (Osaka) on Mon, 26 Jan, arriving in Ontario International.Price includes taxes and charges.From $1,242, select.
Osaka.$1,255 per passenger.Departing Mon, 25 Aug, returning Tue, 2 Sep.Return flight with United.Outbound indirect flight with United, departs from Ontario International on Mon, 25 Aug, arriving in Kansai International (Osaka).Inbound indirect flight with United, departs from Kansai International (Osaka) on Tue, 2 Sep, arriving in Ontario International.Price includes taxes and charges.From $1,255, select.
Osaka.$1,346 per passenger.Departing Mon, 8 Sep, returning Wed, 17 Sep.Return flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Ontario International on Mon, 8 Sep, arriving in Kansai International (Osaka).Inbound indirect flight with Alaska Airlines, departs from Kansai International (Osaka) on Wed, 17 Sep, arriving in Ontario International.Price includes taxes and charges.From $1,346, select.
Osaka.$1,439 per passenger.Departing Mon, 20 Oct, returning Fri, 31 Oct.Return flight with Frontier Airlines and Jeju Air.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 20 Oct, arriving in Kansai International (Osaka).Inbound indirect flight with Jeju Air, departs from Kansai International (Osaka) on Fri, 31 Oct, arriving in Ontario International.Price includes taxes and charges.From $1,439, select.
Osaka.$1,446 per passenger.Departing Wed, 25 Mar, returning Wed, 1 Apr.Return flight with United.Outbound indirect flight with United, departs from Ontario International on Wed, 25 Mar, arriving in Itami Domestic (Osaka).Inbound indirect flight with United, departs from Kansai International (Osaka) on Wed, 1 Apr, arriving in Ontario International.Price includes taxes and charges.From $1,446, select.
Osaka.$1,492 per passenger.Departing Sun, 22 Mar, returning Sun, 29 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Sun, 22 Mar, arriving in Kansai International (Osaka).Inbound indirect flight with Delta, departs from Kansai International (Osaka) on Sun, 29 Mar, arriving in Ontario International.Price includes taxes and charges.From $1,492, select.
Osaka.$1,505 per passenger.Departing Wed, 26 Nov, returning Fri, 5 Dec.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Ontario International on Wed, 26 Nov, arriving in Kansai International (Osaka).Inbound indirect flight with STARLUX Airlines, departs from Kansai International (Osaka) on Fri, 5 Dec, arriving in Ontario International.Price includes taxes and charges.From $1,505, select.
Osaka.$1,505 per passenger.Departing Fri, 6 Feb, returning Sat, 14 Feb.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Ontario International on Fri, 6 Feb, arriving in Kansai International (Osaka).Inbound indirect flight with STARLUX Airlines, departs from Kansai International (Osaka) on Sat, 14 Feb, arriving in Ontario International.Price includes taxes and charges.From $1,505, select.

Find the cheapest month to fly from Ontario International to Osaka

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Osaka flights are currently cheapest in January.
Aug
from $1,596
Sep
from $1,346
Oct
from $1,439
Nov
from $1,505
Dec
from $1,527
Jan
from $1,242
Feb
from $1,505
Mar
from $1,492
Apr
from $1,506
May
from $1,521
Jun
from $2,244
Jul
from $1,698

Alternative Ontario International to Osaka routes

Looking for the cheapest, fastest or easiest route from Ontario International to Osaka? You could fly into the following airports instead.

Ontario to Osaka: Flight information

The things to know before you go.
Cheapest flight found$1,242
Cheapest month to flyJanuary

Finding cheap flights from Ontario International to Osaka: Frequently asked questions

There are 3 airports in Osaka: Itami Domestic (Osaka), Kobe and Kansai International (Osaka).
The best price we found for a return flight from Ontario International to Osaka is $1,242. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Osaka. But we found flights with one or more stops from $1,242.
As of August 2025, there are no flights flying from Ontario International to Osaka.
The cheapest month to fly from Ontario International to Osaka is usually January.
If you're flying from Ontario International Airport, the cheapest airport near Osaka is Kansai International (Osaka) – which is 38.0 km away from the centre of Osaka. We've found flights into this airport from $1,242.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Osaka on Monday, 19 January 2026.
No airlines currently offer direct flights between Ontario International Airport and Osaka. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Osaka but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Osaka is around 40 days in advance, so don’t leave your flight to the last minute.
In August, the average temperature is usually around 26°C. August is typically the warmest month in Osaka, when it usually averages around 30°C. You can expect the least rain in December. The coldest month is January, with temperatures averaging 0°C. The rainiest month is June.
Currently, Japan Airlines offers the cheapest flight tickets to Osaka.

Travelling from Ontario International Airport (ONT) to Osaka: what you need to know

  • The timezone in Osaka is UTC+9. The city is 16 hours ahead of Ontario, where Ontario International Airport is located.

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your ONT to Osaka flight.

  • If you're jetting off during a bank holiday or another peak period, allow extra time. A good general rule is two hours before domestic flights and up to four hours before international departures. Queues at security and check-in will be longer.

  • We make it a breeze to book flight tickets from ONT to Osaka with a stopover. To see all the options, uncheck 'Direct flights only.' Then, select a flight that has a stop long enough to see the sights of your chosen city. Major stopovers include:

    • San Francisco International Airport (SFO)

    • Taiwan Taoyuan International Airport (TPE)

    • Daniel K. Inouye International Airport (HNL)

  • Travelling from central Ontario to ONT takes around 1 hour 30 minutes by public transport. If you ride-share, drive or grab a cab, you'll cover the 5 kilometres in 10 minutes or so, depending on traffic.

  • Searching for a hotel near ONT? If you're boarding an early flight from Ontario International Airport to Osaka, these accommodation options will put you moments from your departure gate:

  • Ontario International Airport has an excellent on-time record, reducing your chances of a delayed flight. Departures from ONT arrive at their destination as scheduled 83.6% of the time.

  • ONT is located at 2900 E. Airport Drive.

How to find the cheapest flights from Ontario International Airport (ONT) to Osaka

  • The best price we've found for a one-way Ontario International Airport to Osaka flight is $602. The cheapest price for a return flight is $1,242. Bear in mind fares may change due to availability at the time of booking.

  • To find cheap flights from ONT to Osaka, book ahead. Airlines typically offer their most competitively priced fares when flights are first released.

  • Landing cheap tickets from Ontario International Airport to Osaka is easier if you're flexible with your dates. Try using the 'Whole month' function to get the lowest prices across the month and bag an epic deal.

  • Picking up a cheap flight from ONT to Osaka couldn't be easier with Price Alerts. All you need to do is set up one of these automatic notifications and we'll let you know when the price has dropped.

  • Pick your ideal arrival and departure times, airlines and number of stops with our filters. Then, sort the results for your flight from Ontario International Airport to Osaka by 'Fastest,' 'Cheapest' or 'Best.'

Airports in Osaka

Kansai International Airport (KIX)

  • Kansai International Airport (KIX) to central Osaka takes about 45 minutes to reach by car. The centre is roughly 48 kilometres away.

  • Touching down on a late flight from Ontario International Airport to Osaka? Grab your luggage and head straight to the comfort of a nearby hotel. Two good options close to KIX are First Cabin Kansai Airport and Hotel Nikko Kansai Airport - 3 Mins Walk to the Airport.

  • Go where the road takes you with a Kansai International Airport rental car. Pick up a set of wheels from BEST KANSAI CAR RENTAL, BE KOBE or TravelCar and experience more of Osaka and beyond.

  • Reserve your ride from Kansai International Airport several weeks ahead of your flight from ONT to Osaka. If you're planning to travel during peak season, book even earlier to secure the best deal.

  • You'll find KIX at 1 Senshukukokita, Izumisano.

Itami Airport (ITM)

  • Once your flight from Ontario International Airport to Osaka has hit the tarmac, you can make your way to the city centre in about 20 minutes by car. Central Osaka is roughly 16 kilometres from Itami Airport (ITM).

  • After stepping off your ONT to Osaka flight, settle in at a hotel near ITM. These are some great options that'll help you slip into relaxation mode:

  • The fastest way to get to where you're going is with an Itami Airport rental car. Collect your wheels from Europcar, Times or Rakuten and be on your way in a flash.

  • Get your preferred vehicle, not just what's left, by securing your ride from ITM before your arrival. You'll also avoid paying more than you need to, especially during peak travel times.

  • You can find Itami Airport at 3丁目555 Nishimachi, Hotarugaike, Toyonaka.

Kobe Airport (UKB)

  • Step off your flight from Ontario International Airport to Osaka and head for your hotel or start sightseeing right away. Central Osaka is around 40 kilometres from Kobe Airport (UKB) and usually takes 45 minutes to reach driving.

  • If you don't want to make your way to the centre, find a hotel near UKB. Make yourself comfy at one of these stays after your ONT to Osaka flight:

  • Be in control of the next leg of your journey with a Kobe Airport rental car. Europcar, Times and Rakuten are some companies you can book with.

  • If you're looking for a particular kind of vehicle, booking early increases your chances of getting exactly what you want. Reserve your ride from UKB at least a couple of weeks ahead of your flight from Ontario International Airport to Osaka.

  • Kobe Airport is located at 1 Kobekuko, Chuo Ward.

Best time to go to Osaka

  • Before securing your flights from Ontario International Airport to Osaka, consider which time of year is best for you. Peak season in Osaka offers a bustling atmosphere and plenty of activities, while the low season brings cheaper hotel rates and fewer crowds.

  • The warmest month in Osaka is August, with temperatures ranging between 21ºC (70ºF) and 34ºC (93ºF). Book your Ontario International Airport to Osaka flight ticket then if that's the weather you find most pleasant.

  • If you want to travel in cooler conditions, look for a cheap ticket from ONT to Osaka in January when temperatures average between 0ºC (32ºF) and 10ºC (50ºF).

More about Osaka

Explore more of Japan

  • Yokohama is just one of the many places in Japan waiting to be discovered once you've seen Osaka. Around 386 kilometres away to the east, popular attractions include Teishoin, Seya Christian Church and Banfukuji.

  • Around 137 kilometres north-east of Osaka, Nagoya is another favourite stop in Japan. Experience the best of this destination with a visit to Nagoya Castle, Atsuta Shrine and Osu Kannon Temple.

Plan the rest of your trip from Ontario to Osaka

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.