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KOS to YSM: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Fort Smith (Fort Smith Airport)
7,179 mi
11,554 km · 6,239 nm
14h 33m
estimated nonstop flight time
-13h
time difference · heading north
See live KOS→YSM fares Phone-only fares on this route — call free
Flight time details
7,179 miles nonstop takes roughly 14h 33m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- YSM — Fort Smith Airport · Fort Smith, Canada
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 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
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
Frequently asked questions
How far is KOS from YSM?
The flight distance from Sihanoukville (KOS) to Fort Smith (YSM) 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 KOS to YSM?
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 Sihanoukville and Fort Smith?
Fort Smith is 13 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–YSM that never appear on search engines, with no booking fees.