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COS to REP: distance & flight time
Colorado Springs (City of Colorado Springs Municipal Airport) → Siem-reap (Siem Reap International Airport)
8,387 mi
13,497 km · 7,288 nm
16h 55m
estimated nonstop flight time
+13h
time difference · heading northwest
See live COS→REP fares Phone-only fares on this route — call free
Flight time details
8,387 miles nonstop takes roughly 16h 55m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- COS — City of Colorado Springs Municipal Airport · Colorado Springs, United States
- REP — Siem Reap International Airport · Siem-reap, 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 COS
- FCS · Butts AAF (Fort Carson) Air Field9 mi away
- DEN · Denver International Airport73 mi away
- PUB · Pueblo Memorial Airport37 mi away
- APA · Centennial Airport53 mi away
Near REP
- BBM · Battambang Airport45 mi away
- KZC · Kampong Chhnang Airport95 mi away
- PXR · Surin Airport103 mi away
- TDX · Trat Airport128 mi away
Frequently asked questions
How far is COS from REP?
The flight distance from Colorado Springs (COS) to Siem-reap (REP) is 8,387 miles (13,497 km, 7,288 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COS to REP?
A nonstop flight takes about 16h 55m 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 Colorado Springs and Siem-reap?
Siem-reap is 13 hours ahead of Colorado Springs.
What is the cheapest way to fly from COS to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COS–REP that never appear on search engines, with no booking fees.