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CYS to KOS: distance & flight time
Cheyenne (Cheyenne Regional Jerry Olson Field) → Sihanoukville (Sihanoukville International Airport)
8,429 mi
13,566 km · 7,325 nm
17h
estimated nonstop flight time
+13h
time difference · heading northwest
See live CYS→KOS fares Phone-only fares on this route — call free
Flight time details
8,429 miles nonstop takes roughly 17h gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- CYS — Cheyenne Regional Jerry Olson Field · Cheyenne, United States
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
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 CYS
- LAR · Laramie Regional Airport46 mi away
- DEN · Denver International Airport90 mi away
- FNL · Northern Colorado Regional Airport50 mi away
- GXY · Greeley–Weld County Airport51 mi away
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
Frequently asked questions
How far is CYS from KOS?
The flight distance from Cheyenne (CYS) to Sihanoukville (KOS) is 8,429 miles (13,566 km, 7,325 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CYS to KOS?
A nonstop flight takes about 17h 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 Cheyenne and Sihanoukville?
Sihanoukville is 13 hours ahead of Cheyenne.
What is the cheapest way to fly from CYS to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CYS–KOS that never appear on search engines, with no booking fees.