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KOS to ACH: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Altenrhein (St Gallen Altenrhein Airport)
5,869 mi
9,445 km · 5,100 nm
11h 58m
estimated nonstop flight time
-5h
time difference · heading northwest
See live KOS→ACH fares Phone-only fares on this route — call free
Flight time details
5,869 miles nonstop takes roughly 11h 58m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 mi away
Frequently asked questions
How far is KOS from ACH?
The flight distance from Sihanoukville (KOS) to Altenrhein (ACH) is 5,869 miles (9,445 km, 5,100 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to ACH?
A nonstop flight takes about 11h 58m 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 Altenrhein?
Altenrhein is 5 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to ACH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–ACH that never appear on search engines, with no booking fees.