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YSM to KOS: distance & flight time
Fort Smith (Fort Smith Airport) → Sihanoukville (Sihanoukville International Airport)
7,179 mi
11,554 km · 6,239 nm
14h 33m
estimated nonstop flight time
+13h
time difference · heading northwest
See live YSM→KOS fares Phone-only fares on this route — call free
Flight time details
7,179 miles nonstop takes roughly 14h 33m 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
- YSM — Fort Smith Airport · Fort Smith, Canada
- 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 YSM
- YPY · Fort Chipewyan Airport92 mi away
- YFR · Fort Resolution Airport99 mi away
- YBE · Uranium City Airport125 mi away
- YHY · Hay River / Merlyn Carter Airport142 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 YSM from KOS?
The flight distance from Fort Smith (YSM) to Sihanoukville (KOS) is 7,179 miles (11,554 km, 6,239 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSM to KOS?
A nonstop flight takes about 14h 33m 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 Smith and Sihanoukville?
Sihanoukville is 13 hours ahead of Fort Smith.
What is the cheapest way to fly from YSM to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSM–KOS that never appear on search engines, with no booking fees.