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ISA to ONT: distance & flight time
Mount Isa (Mount Isa Airport) → Ontario (Ontario International Airport)
7,722 mi
12,428 km · 6,710 nm
15h 37m
estimated nonstop flight time
-17h
time difference · heading northeast
See live ISA→ONT fares Phone-only fares on this route — call free
Flight time details
7,722 miles nonstop takes roughly 15h 37m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 17-hour time set-back when reading arrival times on your ticket.
The two airports
- ISA — Mount Isa Airport · Mount Isa, Australia
- 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 ISA
- CNJ · Cloncurry Airport66 mi away
- JCK · Julia Creek Airport144 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 ISA from ONT?
The flight distance from Mount Isa (ISA) to Ontario (ONT) is 7,722 miles (12,428 km, 6,710 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISA to ONT?
A nonstop flight takes about 15h 37m 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 Mount Isa and Ontario?
Ontario is 17 hours behind Mount Isa.
What is the cheapest way to fly from ISA to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISA–ONT that never appear on search engines, with no booking fees.