Need help booking?
Unpublished phone-only deals available
KOS to HEL: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Helsinki (Helsinki Vantaa Airport)
5,197 mi
8,364 km · 4,516 nm
10h 39m
estimated nonstop flight time
-4h
time difference · heading northwest
See live KOS→HEL fares Phone-only fares on this route — call free
Flight time details
5,197 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
- HEL — Helsinki Vantaa 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 HEL
- HEM · Helsinki Malmi Airport5 mi away
- HYV · Hyvinkää Airfield23 mi away
- QLF · Lahti Vesivehmaa Airport62 mi away
- TLL · Lennart Meri Tallinn Airport63 mi away
Frequently asked questions
How far is KOS from HEL?
The flight distance from Sihanoukville (KOS) to Helsinki (HEL) is 5,197 miles (8,364 km, 4,516 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to HEL?
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 HEL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–HEL that never appear on search engines, with no booking fees.