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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 Airport to Osaka? If you want to travel next month, return fares start from $1,946. Find the lowest prices on one-way and return tickets right here.
Osaka.$1,555 per passenger.Departing Mon, 21 Sep, returning Mon, 5 Oct.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Mon, 21 Sep, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Mon, 5 Oct, arriving in Ontario International.Price includes taxes and charges.From $1,555, select.
Osaka.$1,556 per passenger.Departing Fri, 14 Aug, returning Thu, 27 Aug.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Fri, 14 Aug, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Thu, 27 Aug, arriving in Ontario International.Price includes taxes and charges.From $1,556, select.
Osaka.$1,558 per passenger.Departing Wed, 26 Aug, returning Wed, 2 Sep.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Wed, 26 Aug, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Wed, 2 Sep, arriving in Ontario International.Price includes taxes and charges.From $1,558, select.
Osaka.$1,559 per passenger.Departing Wed, 9 Sep, returning Thu, 17 Sep.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Wed, 9 Sep, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Thu, 17 Sep, arriving in Ontario International.Price includes taxes and charges.From $1,559, select.
Osaka.$1,562 per passenger.Departing Fri, 2 Oct, returning Mon, 12 Oct.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Fri, 2 Oct, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Mon, 12 Oct, arriving in Ontario International.Price includes taxes and charges.From $1,562, select.
Osaka.$1,612 per passenger.Departing Fri, 23 Oct, returning Mon, 2 Nov.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Fri, 23 Oct, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Mon, 2 Nov, arriving in Ontario International.Price includes taxes and charges.From $1,612, select.
Osaka.$1,625 per passenger.Departing Tue, 4 Aug, returning Tue, 13 Oct.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Tue, 4 Aug, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Tue, 13 Oct, arriving in Ontario International.Price includes taxes and charges.From $1,625, select.
Osaka.$1,629 per passenger.Departing Sun, 22 Nov, returning Mon, 30 Nov.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Sun, 22 Nov, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Mon, 30 Nov, arriving in Ontario International.Price includes taxes and charges.From $1,629, select.
Osaka.$1,632 per passenger.Departing Tue, 1 Dec, returning Fri, 11 Dec.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Tue, 1 Dec, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Fri, 11 Dec, arriving in Ontario International.Price includes taxes and charges.From $1,632, select.
Osaka.$1,634 per passenger.Departing Mon, 23 Nov, returning Sat, 12 Dec.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Mon, 23 Nov, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Sat, 12 Dec, arriving in Ontario International.Price includes taxes and charges.From $1,634, select.
Osaka.$1,635 per passenger.Departing Wed, 9 Sep, returning Sat, 21 Nov.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Wed, 9 Sep, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Sat, 21 Nov, arriving in Ontario International.Price includes taxes and charges.From $1,635, select.
Osaka.$1,693 per passenger.Departing Thu, 26 Nov, returning Wed, 27 Jan.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Thu, 26 Nov, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Wed, 27 Jan, arriving in Ontario International.Price includes taxes and charges.From $1,693, select.
Osaka.$1,705 per passenger.Departing Tue, 2 Mar, returning Fri, 5 Mar.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Tue, 2 Mar, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Fri, 5 Mar, arriving in Ontario International.Price includes taxes and charges.From $1,705, select.
Osaka.$1,713 per passenger.Departing Sun, 11 Apr, returning Thu, 15 Apr.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Sun, 11 Apr, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Thu, 15 Apr, arriving in Ontario International.Price includes taxes and charges.From $1,713, select.
Osaka.$1,715 per passenger.Departing Sun, 2 May, returning Sat, 22 May.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Sun, 2 May, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Sat, 22 May, arriving in Ontario International.Price includes taxes and charges.From $1,715, select.
Osaka.$1,718 per passenger.Departing Sun, 25 Apr, returning Sun, 23 May.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Sun, 25 Apr, arriving in Kansai International (Osaka).Inbound indirect flight with China Airlines, departs from Kansai International (Osaka) on Sun, 23 May, arriving in Ontario International.Price includes taxes and charges.From $1,718, 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 August.
Jun
from $2,283
Jul
from $1,946
Aug
from $1,556
Sep
from $1,559
Oct
from $1,562
Nov
from $1,629
Dec
from $1,632
Jan
from $1,800
Feb
from $1,718
Mar
from $1,705
Apr
from $1,713
May
from $1,715

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.

Itami Domestic (Osaka)

11km from central Osaka
Closest
from $2,023
Search flights

Kobe

26km from central Osaka
from $1,764
Search flights

Kansai International (Osaka)

38km from central Osaka
Cheapest
from $1,555
Search flights

Ontario to Osaka: Flight information

The things to know before you go.
Cheapest flight found$1,555
Cheapest month to flySeptember

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 $1,555. 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 $1,554.
As of June 2026, there are no flights flying from Ontario International to Osaka.
The cheapest month to fly from Ontario International to Osaka is usually September.
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 $1,555.
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, 21 September 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 June, the average temperature is usually around 21°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, China Airlines offers the cheapest flight tickets to Osaka.

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

  • Osaka is 17 hours ahead of Ontario, where Ontario International Airport is located. Osaka observes the UTC+9 timezone.

  • For hassle-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This leaves you with plenty of time to board your ONT to Osaka flight.

  • Be prepared for bigger queues in popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures is a good idea.

  • We make it a breeze to book plane tickets from ONT to Osaka with a stopover. To see all the options, deselect 'Direct flights only.' Next, pick a flight that has a stop long enough to see the sights of the city of your choice. Well-traveled stopover hubs include:

    • San Francisco International Airport (SFO)

    • Taiwan Taoyuan International Airport (TPE)

    • Honolulu International Airport (HNL)

  • ONT is around 5 kilometres from central Ontario. If you're ride-sharing, driving or catching a taxi from the centre, it'll take you 15 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the journey time to be around 45 minutes.

  • Catching an early flight from Ontario International Airport to Osaka? Avoid the last-minute rush to the airport (and sneak in some extra precious sleep) by choosing one of these hotels close to ONT:

  • 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% of the time.

  • ONT's address is 2900 E. Airport Drive.

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

  • $838 is currently the best price for a one-way Ontario International Airport to Osaka flight. A return plane ticket starts from $1,555. These prices can change based on demand and availability.

  • Don't leave things to the last minute. You're more likely to pick up cheap flights from ONT to Osaka if you book ahead. Airlines often have some fantastic early bird deals.

  • If you have flexibility with your trip dates, try using the 'Whole month' search tool. It'll show you the cheapest price across each month when looking for a Ontario International Airport to Osaka ticket.

  • Cut down on the time spent looking for cheap flights from ONT to Osaka by setting up a Price Alert. You'll get an email or notification through the app when a lower fare pops up.

  • Tailor your trip with filters. Select your preferred departure and arrival times, total journey duration and airlines. You can also sort results by 'Cheapest,' 'Best' or 'Fastest' flights from Ontario International Airport to Osaka.

Airports in Osaka

Kansai International Airport (KIX)

  • Kansai International Airport (KIX) is around 48 kilometres from the centre of Osaka. If you're catching a taxi or a ride-share, the drive will take roughly 50 minutes.

  • It typically takes 45 minutes if you're travelling by public transport.

  • The last thing you need is a long journey to your hotel if you're getting in late on a flight from Ontario International Airport to Osaka. Check in to one of these accommodation options near KIX instead:

  • Increase the odds of snagging the lowest price by booking early. Reserving your ride from Kansai International Airport at least a few weeks before your flight from ONT to Osaka is a good move.

  • KIX is located at 1 Senshukukokita, Izumisano.

Osaka Itami International 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 around 30 minutes by car. Central Osaka is roughly 18 kilometres from Osaka Itami International Airport (ITM).

  • You can expect the journey to take about 35 minutes on public transport.

  • There are some great places to park your luggage (and yourself) near ITM. Unwind and get cosy after your ONT to Osaka flight at one of these perfectly located options:

  • Typically, the sooner you book, the better the prices and vehicle selection. Lock in your ride from ITM the moment you know your dates.

  • The address for Osaka Itami International Airport is 3丁目555 Nishimachi, Hotarugaike, Toyonaka.

Kobe Airport (UKB)

  • Make tracks for the city centre after your flight from Ontario International Airport to Osaka has arrived. Central Osaka is around 32 kilometres from Kobe Airport (UKB) and takes roughly 40 minutes to reach by car.

  • The journey will take you around 50 minutes by public transport.

  • Enjoy a restful, unhurried start to your trip by choosing a hotel near UKB after your ONT to Osaka flight. Recover from your travel day or simply give yourself time to get your footing in a new city at:

  • Booking at least a few weeks in advance of your flight from Ontario International Airport to Osaka is a smart way to go. As well as better deals, you'll have a wider selection of vehicle makes and models at UKB.

  • Kobe Airport's official address is 1 Kobekuko, Chuo Ward.

Best time to go to Osaka

  • April is the busiest month for flights from Ontario International Airport to Osaka. To avoid the crowds, visit Osaka in December.

  • Lock in a Ontario International Airport to Osaka plane ticket with a departure in August if you want to explore the city during its warmest month. You can expect temperatures to range from 21ºC (70ºF) to 34ºC (93ºF).

  • 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

  • Osaka has plenty to offer, but there are so many other corners of Japan just waiting to be explored. Around 402 kilometres east of Osaka, a trip to Tokyo will keep your itinerary busy. Start with attractions like Tokyo Skytree, Sensho-ji and Ginza Central Street.

  • Nagoya is another favourite destination in Japan and is around 137 kilometres northeast of Osaka. No trip is complete without visiting Nagoya Castle, Ninomaru Garden and Sky Promenade.

Plan the rest of your trip from Ontario to Osaka

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.