Need help booking?
Unpublished phone-only deals available
DUC to KOS: distance & flight time
Duncan (Halliburton Field) → Sihanoukville (Sihanoukville International Airport)
9,017 mi
14,512 km · 7,836 nm
18h 9m
estimated nonstop flight time
+12h
time difference · heading northwest
See live DUC→KOS fares Phone-only fares on this route — call free
Flight time details
9,017 miles nonstop takes roughly 18h 9m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- DUC — Halliburton Field · Duncan, 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 DUC
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 DUC from KOS?
The flight distance from Duncan (DUC) to Sihanoukville (KOS) is 9,017 miles (14,512 km, 7,836 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DUC to KOS?
A nonstop flight takes about 18h 9m 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 Duncan and Sihanoukville?
Sihanoukville is 12 hours ahead of Duncan.
What is the cheapest way to fly from DUC to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DUC–KOS that never appear on search engines, with no booking fees.