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KOS to BTM: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Butte (Bert Mooney Airport)
7,934 mi
12,769 km · 6,895 nm
16h 1m
estimated nonstop flight time
-13h
time difference · heading northeast
See live KOS→BTM fares Phone-only fares on this route — call free
Flight time details
7,934 miles nonstop takes roughly 16h 1m 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
- BTM — Bert Mooney Airport · Butte, 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 BTM
- HLN · Helena Regional Airport51 mi away
- BZN · Gallatin Field66 mi away
- SMN · Lemhi County Airport88 mi away
- LVM · Mission Field100 mi away
Frequently asked questions
How far is KOS from BTM?
The flight distance from Sihanoukville (KOS) to Butte (BTM) is 7,934 miles (12,769 km, 6,895 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to BTM?
A nonstop flight takes about 16h 1m 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 Butte?
Butte is 13 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to BTM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–BTM that never appear on search engines, with no booking fees.