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OLM to KOS: distance & flight time
Olympia (Olympia Regional Airport) → Sihanoukville (Sihanoukville International Airport)
7,538 mi
12,131 km · 6,550 nm
15h 15m
estimated nonstop flight time
+14h
time difference · heading northwest
See live OLM→KOS fares Phone-only fares on this route — call free
Flight time details
7,538 miles nonstop takes roughly 15h 15m 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
- OLM — Olympia Regional Airport · Olympia, United States
- KOS — Sihanoukville International Airport · Sihanoukville, 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 OLM
- SEA · Seattle Tacoma International Airport43 mi away
- GRF · Gray Army Air Field17 mi away
- CLS · Chehalis Centralia Airport21 mi away
- SHN · Sanderson Field22 mi away
Near KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 mi away
Frequently asked questions
How far is OLM from KOS?
The flight distance from Olympia (OLM) to Sihanoukville (KOS) is 7,538 miles (12,131 km, 6,550 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OLM to KOS?
A nonstop flight takes about 15h 15m 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 Olympia and Sihanoukville?
Sihanoukville is 14 hours ahead of Olympia.
What is the cheapest way to fly from OLM to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OLM–KOS that never appear on search engines, with no booking fees.