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CMH to REP: distance & flight time
Columbus (John Glenn Columbus International Airport) → Siem-reap (Siem Reap International Airport)
8,722 mi
14,036 km · 7,579 nm
17h 34m
estimated nonstop flight time
+11h
time difference · heading north
See live CMH→REP fares Phone-only fares on this route — call free
Flight time details
8,722 miles nonstop takes roughly 17h 34m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- CMH — John Glenn Columbus International Airport · Columbus, 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 CMH
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 CMH from REP?
The flight distance from Columbus (CMH) to Siem-reap (REP) is 8,722 miles (14,036 km, 7,579 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CMH to REP?
A nonstop flight takes about 17h 34m 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 Columbus and Siem-reap?
Siem-reap is 11 hours ahead of Columbus.
What is the cheapest way to fly from CMH to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CMH–REP that never appear on search engines, with no booking fees.