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KOS to OOM: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Cooma (Cooma Snowy Mountains Airport)
4,379 mi
7,047 km · 3,805 nm
9h 3m
estimated nonstop flight time
+3h
time difference · heading southeast
See live KOS→OOM fares Phone-only fares on this route — call free
Flight time details
4,379 miles nonstop takes roughly 9h 3m 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
- OOM — Cooma Snowy Mountains Airport · Cooma, 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 OOM
- CYG · Corryong Airport61 mi away
- MIM · Merimbula Airport66 mi away
- CBR · Canberra International Airport70 mi away
- MYA · Moruya Airport71 mi away
Frequently asked questions
How far is KOS from OOM?
The flight distance from Sihanoukville (KOS) to Cooma (OOM) is 4,379 miles (7,047 km, 3,805 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to OOM?
A nonstop flight takes about 9h 3m 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 Cooma?
Cooma is 3 hours ahead of Sihanoukville.
What is the cheapest way to fly from KOS to OOM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–OOM that never appear on search engines, with no booking fees.