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KOS to GTF: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Great Falls (Great Falls International Airport)
7,886 mi
12,691 km · 6,852 nm
15h 56m
estimated nonstop flight time
-13h
time difference · heading northeast
See live KOS→GTF fares Phone-only fares on this route — call free
Flight time details
7,886 miles nonstop takes roughly 15h 56m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- 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 KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 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 KOS from GTF?
The flight distance from Sihanoukville (KOS) to Great Falls (GTF) is 7,886 miles (12,691 km, 6,852 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to GTF?
A nonstop flight takes about 15h 56m 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 Sihanoukville and Great Falls?
Great Falls is 13 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–GTF that never appear on search engines, with no booking fees.