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GRF to REP: distance & flight time
Fort Lewis (Gray Army Air Field) → Siem-reap (Siem Reap International Airport)
7,371 mi
11,862 km · 6,405 nm
14h 55m
estimated nonstop flight time
+14h
time difference · heading northwest
See live GRF→REP fares Phone-only fares on this route — call free
Flight time details
7,371 miles nonstop takes roughly 14h 55m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, 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 GRF
- SEA · Seattle Tacoma International Airport29 mi away
- TCM · McChord Air Force Base6 mi away
- TIW · Tacoma Narrows Airport13 mi away
- OLM · Olympia Regional Airport17 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 GRF from REP?
The flight distance from Fort Lewis (GRF) to Siem-reap (REP) is 7,371 miles (11,862 km, 6,405 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to REP?
A nonstop flight takes about 14h 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 Fort Lewis and Siem-reap?
Siem-reap is 14 hours ahead of Fort Lewis.
What is the cheapest way to fly from GRF to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–REP that never appear on search engines, with no booking fees.