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Cheap flights from Ontario to Osaka from $352

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Osaka departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Osaka

Cheap round-trip flights

United Airlines Logo
6:50 pm - 2:50 pmONT-KIX
28h 00m1 stop
United Airlines Logo
4:50 pm - 8:33 pmKIX-ONT
19h 43m1 stop
$703United Airlines
Find Deal
Sun, Aug 31 - Tue, Sep 16
United Airlines Logo
6:50 pm - 2:50 pmONT-KIX
28h 00m1 stop
United Airlines Logo
4:50 pm - 5:37 pmKIX-ONT
16h 47m1 stop
$705United Airlines
Find Deal
Sun, Aug 31 - Tue, Sep 16
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
$713Alaska Airlines
Find Deal
Sat, Jan 17 - Wed, Jan 28
Delta Logo
6:00 am - 9:00 pmONT-KIX
23h 00m2 stops
Delta Logo
12:35 pm - 10:40 pmKIX-ONT
26h 05m2 stops
$726Delta
Find Deal
Tue, Sep 2 - Tue, Sep 9
Korean Air Logo
6:00 am - 9:00 pmONT-KIX
23h 00m2 stops
Korean Air Logo
9:05 am - 5:00 pmKIX-ONT
23h 55m2 stops
$730Korean Air
Find Deal
Wed, Sep 24 - Wed, Oct 1
Korean Air Logo
6:00 am - 9:00 pmONT-KIX
23h 00m2 stops
Korean Air Logo
12:35 pm - 5:00 pmKIX-ONT
20h 25m2 stops
$731Korean Air
Find Deal
Sun, Sep 21 - Wed, Oct 1
American Airlines Logo
6:10 am - 7:45 pmONT-ITM
21h 35m2 stops
American Airlines Logo
2:35 pm - 6:54 pmITM-ONT
20h 19m2 stops
$734American Airlines
Find Deal
Tue, Sep 2 - Tue, Sep 9
Korean Air Logo
6:00 am - 5:05 pmONT-KIX
43h 05m2 stops
Korean Air Logo
6:10 pm - 5:00 pmKIX-ONT
38h 50m2 stops
$751Korean Air
Find Deal
Fri, Sep 19 - Tue, Sep 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
$795Alaska Airlines
Find Deal
Mon, Jan 12 - Sun, Jan 25
American Airlines Logo
11:59 pm - 8:25 pmONT-ITM
27h 26m2 stops
American Airlines Logo
7:25 am - 1:48 pmITM-ONT
23h 23m2 stops
$892American Airlines
Find Deal
Mon, Dec 22 - Thu, Jan 8

Alaska Airlines flights from Ontario to Osaka

Our best Alaska Airlines deals on Ontario to Osaka flight tickets
Alaska Airlines
Jan 17
ONT9:50 amOntario
39h 55m
1 stop
KIX6:45 pmOsaka Kansai Intl
Jan 28
KIX8:45 pmOsaka Kansai Intl
18h 10m
1 stop
ONT9:55 pmOntario
$713
Find similar
Alaska Airlines
Jan 12
ONT9:50 amOntario
39h 55m
1 stop
KIX6:45 pmOsaka Kansai Intl
Jan 25
KIX8:45 pmOsaka Kansai Intl
18h 10m
1 stop
ONT9:55 pmOntario
$795
Find similar
Alaska Airlines
Sep 23
ONT6:00 amOntario
21h 45m
2 stops
ITM7:45 pmOsaka Itami
Oct 2
ITM2:40 pmOsaka Itami
22h 30m
2 stops
ONT9:10 pmOntario
$833
Find similar

Delta flights from Ontario to Osaka

Our best Delta deals on Ontario to Osaka flight tickets
Delta
Sep 2
ONT6:00 amOntario
23h 00m
2 stops
KIX9:00 pmOsaka Kansai Intl
Sep 9
KIX12:35 pmOsaka Kansai Intl
26h 05m
2 stops
ONT10:40 pmOntario
$726
Find similar
Delta
Aug 17
ONT6:05 amOntario
37h 15m
2 stops
KIX11:20 amOsaka Kansai Intl
Sep 2
KIX9:05 amOsaka Kansai Intl
29h 37m
2 stops
ONT10:42 pmOntario
$1,005
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Osaka that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 12, 2025.
Use the filters below to find and compare flights from Ontario to Osaka that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 8/31

6:50 pm-2:50 pm

1 stop28h 00m

Osaka Kansai Intl

Tue 9/16

4:50 pm-8:33 pm

1 stop19h 43m

$703

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 8/31

6:50 pm-2:50 pm

1 stop28h 00m

Osaka Kansai Intl

Tue 9/16

4:50 pm-5:37 pm

1 stop16h 47m

$705

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sat 1/17

9:50 am-6:45 pm

1 stop39h 55m

Osaka Kansai Intl

Wed 1/28

8:45 pm-9:55 pm

1 stop18h 10m

$713

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Tue 9/2

6:00 am-9:00 pm

2 stops23h 00m

Osaka Kansai Intl

Tue 9/9

12:35 pm-10:40 pm

2 stops26h 05m

$726

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 9/24

6:00 am-9:00 pm

2 stops23h 00m

Osaka Kansai Intl

Wed 10/1

9:05 am-5:00 pm

2 stops23h 55m

$730

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 9/21

6:00 am-9:00 pm

2 stops23h 00m

Osaka Kansai Intl

Wed 10/1

12:35 pm-5:00 pm

2 stops20h 25m

$731

OntarioOsaka

ONT - ITM

ONTITM

Ontario

Tue 9/2

6:10 am-7:45 pm

2 stops21h 35m

Osaka Itami

Tue 9/9

2:35 pm-6:54 pm

2 stops20h 19m

$734

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Fri 9/19

6:00 am-5:05 pm

2 stops43h 05m

Osaka Kansai Intl

Tue 9/30

6:10 pm-5:00 pm

2 stops38h 50m

$751

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 1/12

9:50 am-6:45 pm

1 stop39h 55m

Osaka Kansai Intl

Sun 1/25

8:45 pm-9:55 pm

1 stop18h 10m

$795

OntarioOsaka

ONT - ITM

ONTITM

Ontario

Mon 12/22

11:59 pm-8:25 pm

2 stops27h 26m

Osaka Itami

Thu 1/8

7:25 am-1:48 pm

2 stops23h 23m

$892

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Osaka from

How to get the cheapest flight ticket from Ontario to Osaka

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Osaka?

According to our data, Tuesday is the cheapest day to fly to Osaka from Ontario. The lowest ticket price found for a Tuesday departure recently was $785. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Osaka for around $911.

What is the cheapest time of day to depart on your flight to Osaka?

Our data shows that the cheapest Ontario to Osaka flights are usually those with departure times in the afternoon. Our users have found flights to Osaka in the afternoon for as low as $812. Flights to Osaka are more costly in the evening, with an average ticket price of $1,091. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Ontario to Osaka flights?

You could potentially save up to 5% on your flight if you consider stops on a Ontario to Osaka flight.

When to book flights from Ontario to Osaka

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Osaka according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Osaka (ONT to OSA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Osaka

Best Price Found

$352

Fastest flight time

16h 36m

Direct flights

None

Airports in Osaka

2 airports
The best one-way flight to Osaka from Ontario in the past 72 hours is $352. The best round-trip flight deal from Ontario to Osaka found on momondo in the last 72 hours is $703.
The fastest flight from Ontario to Osaka takes 16h 36m
There are no direct flights from Ontario to Osaka. Popular non-direct routes for this connection are Ontario Airport - Osaka Itami Airport and Ontario Airport - Osaka Kansai Intl Airport.
There are 2 airports near Osaka: Osaka Itami (ITM), Osaka Kansai Intl (KIX)
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  • How far is Ontario to Osaka by plane?

    The straight-line distance from Ontario to Osaka is 5733.7 mi. 16h 50m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ontario Airport to Osaka?

    Prices for flights from Ontario Airport to Osaka are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Osaka?

  • How old do you have to be to fly from Ontario Airport to Osaka?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Osaka.

  • What documentation or ID do you need to fly to Osaka?

    The necessary travel and health documents for your Osaka trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Osaka

Compare and see reviews for airlines that fly from Ontario to Osaka with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $826Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
China AirlinesPriceFrom $1,032Free CancellationRating
8.3
760 reviews
Search China Airlines flights

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Nara
Nishinomiya

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Osaka?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Osaka. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Osaka with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Osaka flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Osaka?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Osaka.

I’m not ready to book a flight from Ontario to Osaka right now. Can momondo alert me if prices change?

Price alerts on flights to Osaka from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Japan

Fly into one of these airports located in Osaka

Airports listed have a maximum distance of 22.5 mi from Osaka
Osaka Itami Airport
Osaka Kansai Intl Airport