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GTF to ISA: distance & flight time
Great Falls (Great Falls International Airport) → Mount Isa (Mount Isa Airport)
8,144 mi
13,106 km · 7,077 nm
16h 26m
estimated nonstop flight time
+16h
time difference · heading west
See live GTF→ISA fares Phone-only fares on this route — call free
Flight time details
8,144 miles nonstop takes roughly 16h 26m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- GTF — Great Falls International Airport · Great Falls, United States
- ISA — Mount Isa Airport · Mount Isa, Australia
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 GTF
- HLN · Helena Regional Airport67 mi away
- CTB · Cut Bank International Airport91 mi away
- LWT · Lewistown Municipal Airport94 mi away
- HVR · Havre City County Airport104 mi away
Near ISA
- CNJ · Cloncurry Airport66 mi away
- JCK · Julia Creek Airport144 mi away
Frequently asked questions
How far is GTF from ISA?
The flight distance from Great Falls (GTF) to Mount Isa (ISA) is 8,144 miles (13,106 km, 7,077 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GTF to ISA?
A nonstop flight takes about 16h 26m 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 Great Falls and Mount Isa?
Mount Isa is 16 hours ahead of Great Falls.
What is the cheapest way to fly from GTF to ISA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GTF–ISA that never appear on search engines, with no booking fees.