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KOS to XRH: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Richmond (RAAF Base Richmond)
4,347 mi
6,996 km · 3,778 nm
8h 59m
estimated nonstop flight time
+3h
time difference · heading southeast
See live KOS→XRH fares Phone-only fares on this route — call free
Flight time details
4,347 miles nonstop takes roughly 8h 59m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- XRH — RAAF Base Richmond · Richmond, Australia
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 XRH
- SYD · Sydney Kingsford Smith International Airport33 mi away
- BWU · Sydney Bankstown Airport25 mi away
- CDU · Camden Airport31 mi away
- BEO · Lake Macquarie Airport62 mi away
Frequently asked questions
How far is KOS from XRH?
The flight distance from Sihanoukville (KOS) to Richmond (XRH) is 4,347 miles (6,996 km, 3,778 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to XRH?
A nonstop flight takes about 8h 59m 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 Richmond?
Richmond is 3 hours ahead of Sihanoukville.
What is the cheapest way to fly from KOS to XRH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–XRH that never appear on search engines, with no booking fees.