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ITM to ONT: distance & flight time
Osaka (Osaka International Airport) → Ontario (Ontario International Airport)
5,738 mi
9,235 km · 4,986 nm
11h 43m
estimated nonstop flight time
-16h
time difference · heading northeast
See live ITM→ONT fares Phone-only fares on this route — call free
Flight time details
5,738 miles nonstop takes roughly 11h 43m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- ITM — Osaka International Airport · Osaka, Japan
- ONT — Ontario International Airport · Ontario, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ITM
- UKB · Kobe Airport16 mi away
- KIX · Kansai International Airport27 mi away
- TJH · Tajima Airport62 mi away
- TKS · Tokushima Airport/JMSDF Air Base65 mi away
Near ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Frequently asked questions
How far is ITM from ONT?
The flight distance from Osaka (ITM) to Ontario (ONT) is 5,738 miles (9,235 km, 4,986 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ITM to ONT?
A nonstop flight takes about 11h 43m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Osaka and Ontario?
Ontario is 16 hours behind Osaka.
What is the cheapest way to fly from ITM to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ITM–ONT that never appear on search engines, with no booking fees.