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GCI to GTF: distance & flight time
Guernsey (Guernsey Airport) → Great Falls (Great Falls International Airport)
4,509 mi
7,256 km · 3,918 nm
9h 18m
estimated nonstop flight time
-7h
time difference · heading northwest
See live GCI→GTF fares Phone-only fares on this route — call free
Flight time details
4,509 miles nonstop takes roughly 9h 18m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- GCI — Guernsey Airport · Guernsey, Guernsey
- 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 GCI
- JER · Jersey Airport24 mi away
- ACI · Alderney Airport26 mi away
- CER · Cherbourg-Maupertus Airport53 mi away
- GFR · Granville Airport60 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 GCI from GTF?
The flight distance from Guernsey (GCI) to Great Falls (GTF) is 4,509 miles (7,256 km, 3,918 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GCI to GTF?
A nonstop flight takes about 9h 18m 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 Guernsey and Great Falls?
Great Falls is 7 hours behind Guernsey.
What is the cheapest way to fly from GCI to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GCI–GTF that never appear on search engines, with no booking fees.