Cheap flights from Ontario to Osaka from $1,085 ONT → ITM, KIX
Ontario International Airport (ONT) → Itami Airport (ITM), Kansai International Airport (KIX)
The cheapest return found recently is $1,085 with United Airlines, 10 Dec – 17 Dec, found 2 days ago.
- Cheapest return found recently
- $1,085, 10 Dec to 17 Dec
- Usual return price
- $1,108 to $1,135
- Cheapest month to fly
- December 2026, return fares from $1,063 found in the last 7 days
Return
The cheapest return fare on each of 9 departure dates is usually $1,108 to $1,135.
Cheapest return found recently
$1,085
10 Dec – 17 Dec · United Airlines
Ontario International Airport (ONT) → Kansai International Airport (KIX)
Leaves 6:00 a.m. · Return leaves 3:20 p.m. · 32 h 10 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$1,085 10 Dec – 17 Decfound 2 days agoSee prices for these dates
$1,063 10 Dec – 17 Decfound 4 days agoSee prices for these dates
What have prices looked like?
Over 39 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $871 to $1,230.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 9 departure dates from 29 Nov to 28 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 7-night return fares leaving within 3 days of 10 Dec to compare.
Every date we hold
29 fares on 9 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 29 Nov – 7 Dec | $1,118 | China Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 10 Dec – 17 Dec | $1,063 | United Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 28 Dec – 15 Jan 2027 | $1,339 | China Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 11 Jan 2027 – 19 Jan 2027 | $1,077 | China Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 20 Feb 2027 – 3 Mar 2027 | $1,109 | China Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 21 Feb 2027 – 3 Mar 2027 | $1,143 | China Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 22 Feb 2027 – 4 Mar 2027 | $1,132 | United Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 23 Feb 2027 – 5 Mar 2027 | $1,108 | China Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 28 Mar 2027 – 11 Apr 2027 | $1,135 | China Airlines | Ontario International Airport (ONT) → Kansai International Airport (KIX) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $1,063.
Airlines on the cheapest dates: China Airlines, United Airlines.
Premium cabin fares from Ontario to Osaka
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 10 Dec – 17 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ontario to Osaka?
Return
Fares 60 to 89 days before departure were typically 19% lower than 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (39 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $1,143 | $1,061 | +24% | 15 |
| 30–59 days | $1,040 | $905 | +13% | 21 |
| 60–89 days | $924 | $871 | Cheapest seen | 12 |
| 90–179 days | $1,038 | $994 | +12% | 25 |
| 180+ days | $1,078 | $1,078 | +17% | 8 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Los Angeles → Osaka
56 km from Ontario
$1,025
$60 less than flying from Ontario
10 Dec – 17 Dec · LAX → KIX · out 1 stop, back 1 stop
found 2 days ago
Long Beach → Osaka
60 km from Ontario
$2,026
$941 more than flying from Ontario
28 Mar 2027 – 11 Apr 2027 · LGB → KIX · out 1 stop, back 1 stop
found 4 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 10 Dec – 17 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Ontario to Osaka?
The cheapest return found recently is $1,085 with United Airlines, 10 Dec to 17 Dec, found 2 days ago. The cheapest return we hold, of any age, is $1,063 with United Airlines, 10 Dec to 17 Dec, found 4 days ago. The cheapest return fare on each of 9 departure dates is usually $1,108 to $1,135.
What is the cheapest month to fly from Ontario to Osaka?
December 2026 is the cheapest month for a return, from $1,063, 10 Dec to 17 Dec, found 4 days ago.
How far ahead should I book a flight from Ontario to Osaka?
In 39 days of prices between 24 Sept and 11 Nov, return fares 60 to 89 days before departure were typically 19% lower than 14 to 29 days before departure.
Which airlines have the cheapest flights from Ontario to Osaka?
Between 29 Nov and 28 Mar 2027, China Airlines has the cheapest return on 7 of the 9 departure dates we hold, and United Airlines on 2.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work