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REP to FSI: distance & flight time
Siem-reap (Siem Reap International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
8,810 mi
14,179 km · 7,656 nm
17h 45m
estimated nonstop flight time
-12h
time difference · heading northeast
See live REP→FSI fares Phone-only fares on this route — call free
Flight time details
8,810 miles nonstop takes roughly 17h 45m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time set-back when reading arrival times on your ticket.
The two airports
- REP — Siem Reap International Airport · Siem-reap, Cambodia
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
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 FSI
- LAW · Lawton Fort Sill Regional Airport6 mi away
- DUC · Halliburton Field28 mi away
- HBR · Hobart Regional Airport44 mi away
- SPS · Sheppard Air Force Base-Wichita Falls Municipal Airport46 mi away
Frequently asked questions
How far is REP from FSI?
The flight distance from Siem-reap (REP) to Fort Sill (FSI) is 8,810 miles (14,179 km, 7,656 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from REP to FSI?
A nonstop flight takes about 17h 45m 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 Fort Sill?
Fort Sill is 12 hours behind Siem-reap.
What is the cheapest way to fly from REP to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on REP–FSI that never appear on search engines, with no booking fees.