Need help booking?
Unpublished phone-only deals available
KOS to OSY: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Namsos (Namsos Høknesøra Airport)
5,620 mi
9,045 km · 4,884 nm
11h 29m
estimated nonstop flight time
-5h
time difference · heading northwest
See live KOS→OSY fares Phone-only fares on this route — call free
Flight time details
5,620 miles nonstop takes roughly 11h 29m 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
- OSY — Namsos Høknesøra Airport · Namsos, Norway
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 OSY
- RVK · Rørvik Airport, Ryum28 mi away
- BNN · Brønnøysund Airport71 mi away
- TRD · Trondheim Airport Værnes73 mi away
- OLA · Ørland Airport80 mi away
Frequently asked questions
How far is KOS from OSY?
The flight distance from Sihanoukville (KOS) to Namsos (OSY) is 5,620 miles (9,045 km, 4,884 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to OSY?
A nonstop flight takes about 11h 29m 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 Namsos?
Namsos is 5 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to OSY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–OSY that never appear on search engines, with no booking fees.