Need help booking?
Unpublished phone-only deals available
MGB to GTF: distance & flight time
Mount Gambier (Mount Gambier Airport) → Great Falls (Great Falls International Airport)
8,840 mi
14,227 km · 7,682 nm
17h 48m
estimated nonstop flight time
-15.5h
time difference · heading northeast
See live MGB→GTF fares Phone-only fares on this route — call free
Flight time details
8,840 miles nonstop takes roughly 17h 48m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15.5-hour time set-back when reading arrival times on your ticket.
The two airports
- MGB — Mount Gambier Airport · Mount Gambier, Australia
- GTF — Great Falls International Airport · Great Falls, 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 MGB
- NAC · Naracoorte Airport53 mi away
- PTJ · Portland Airport54 mi away
- HLT · Hamilton Airport70 mi away
- WMB · Warrnambool Airport98 mi away
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
Frequently asked questions
How far is MGB from GTF?
The flight distance from Mount Gambier (MGB) to Great Falls (GTF) is 8,840 miles (14,227 km, 7,682 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MGB to GTF?
A nonstop flight takes about 17h 48m 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 Gambier and Great Falls?
Great Falls is 15.5 hours behind Mount Gambier.
What is the cheapest way to fly from MGB to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MGB–GTF that never appear on search engines, with no booking fees.