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REP to CMB: distance & flight time
Siem-reap (Siem Reap International Airport) → Colombo (Bandaranaike International Colombo Airport)
1,681 mi
2,706 km · 1,461 nm
3h 46m
estimated nonstop flight time
-1.5h
time difference · heading west
See live REP→CMB fares Phone-only fares on this route — call free
Flight time details
1,681 miles nonstop takes roughly 3h 46m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time set-back when reading arrival times on your ticket.
The two airports
- REP — Siem Reap International Airport · Siem-reap, Cambodia
- CMB — Bandaranaike International Colombo Airport · Colombo, Sri Lanka
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 REP
- BBM · Battambang Airport45 mi away
- KZC · Kampong Chhnang Airport95 mi away
- PXR · Surin Airport103 mi away
- TDX · Trat Airport128 mi away
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
Frequently asked questions
How far is REP from CMB?
The flight distance from Siem-reap (REP) to Colombo (CMB) is 1,681 miles (2,706 km, 1,461 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from REP to CMB?
A nonstop flight takes about 3h 46m 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 Siem-reap and Colombo?
Colombo is 1.5 hours behind Siem-reap.
What is the cheapest way to fly from REP to CMB?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on REP–CMB that never appear on search engines, with no booking fees.