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CMB to KOS: distance & flight time
Colombo (Bandaranaike International Colombo Airport) → Sihanoukville (Sihanoukville International Airport)
1,638 mi
2,636 km · 1,423 nm
3h 41m
estimated nonstop flight time
+1.5h
time difference · heading east
See live CMB→KOS fares Phone-only fares on this route — call free
Flight time details
1,638 miles nonstop takes roughly 3h 41m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time gain when reading arrival times on your ticket.
The two airports
- CMB — Bandaranaike International Colombo Airport · Colombo, Sri Lanka
- 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 CMB
- RML · Colombo Ratmalana Airport25 mi away
- GIU · Sigiriya Air Force Base79 mi away
- ACJ · Anuradhapura Air Force Base86 mi away
- KCT · Koggala Airport87 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 CMB from KOS?
The flight distance from Colombo (CMB) to Sihanoukville (KOS) is 1,638 miles (2,636 km, 1,423 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CMB to KOS?
A nonstop flight takes about 3h 41m 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 Colombo and Sihanoukville?
Sihanoukville is 1.5 hours ahead of Colombo.
What is the cheapest way to fly from CMB to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CMB–KOS that never appear on search engines, with no booking fees.