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HEL to USM: distance & flight time
Helsinki (Helsinki Vantaa Airport) → Ko Samui (Samui Airport)
5,137 mi
8,268 km · 4,464 nm
10h 32m
estimated nonstop flight time
+4h
time difference · heading east
See live HEL→USM fares Phone-only fares on this route — call free
Flight time details
5,137 miles nonstop takes roughly 10h 32m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time gain when reading arrival times on your ticket.
The two airports
- HEL — Helsinki Vantaa Airport · Helsinki, Finland
- USM — Samui Airport · Ko Samui, Thailand
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 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
Near USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Frequently asked questions
How far is HEL from USM?
The flight distance from Helsinki (HEL) to Ko Samui (USM) is 5,137 miles (8,268 km, 4,464 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HEL to USM?
A nonstop flight takes about 10h 32m 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 Helsinki and Ko Samui?
Ko Samui is 4 hours ahead of Helsinki.
What is the cheapest way to fly from HEL to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HEL–USM that never appear on search engines, with no booking fees.