Need help booking?
Unpublished phone-only deals available
KOS to HEM: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Helsinki (Helsinki Malmi Airport)
5,194 mi
8,359 km · 4,514 nm
10h 39m
estimated nonstop flight time
-4h
time difference · heading northwest
See live KOS→HEM fares Phone-only fares on this route — call free
Flight time details
5,194 miles nonstop takes roughly 10h 39m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- HEM — Helsinki Malmi Airport · Helsinki, Finland
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 HEM
- HEL · Helsinki Vantaa Airport5 mi away
- HYV · Hyvinkää Airfield28 mi away
- TLL · Lennart Meri Tallinn Airport59 mi away
- QLF · Lahti Vesivehmaa Airport65 mi away
Frequently asked questions
How far is KOS from HEM?
The flight distance from Sihanoukville (KOS) to Helsinki (HEM) is 5,194 miles (8,359 km, 4,514 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to HEM?
A nonstop flight takes about 10h 39m 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 Helsinki?
Helsinki is 4 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to HEM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–HEM that never appear on search engines, with no booking fees.