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RDU to KOS: distance & flight time
Raleigh-durham (Raleigh Durham International Airport) → Sihanoukville (Sihanoukville International Airport)
9,223 mi
14,843 km · 8,015 nm
18h 33m
estimated nonstop flight time
+11h
time difference · heading north
See live RDU→KOS fares Phone-only fares on this route — call free
Flight time details
9,223 miles nonstop takes roughly 18h 33m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- RDU — Raleigh Durham International Airport · Raleigh-durham, 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 RDU
- POB · Pope Field50 mi away
- RWI · Rocky Mount Wilson Regional Airport50 mi away
- FBG · Simmons Army Air Field52 mi away
- SOP · Moore County Airport56 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 RDU from KOS?
The flight distance from Raleigh-durham (RDU) to Sihanoukville (KOS) is 9,223 miles (14,843 km, 8,015 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RDU to KOS?
A nonstop flight takes about 18h 33m 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 Raleigh-durham and Sihanoukville?
Sihanoukville is 11 hours ahead of Raleigh-durham.
What is the cheapest way to fly from RDU to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RDU–KOS that never appear on search engines, with no booking fees.