Need help booking?
Unpublished phone-only deals available
JSI to USM: distance & flight time
Skiathos (Skiathos Island National Airport) → Ko Samui (Samui Airport)
5,085 mi
8,183 km · 4,418 nm
10h 26m
estimated nonstop flight time
+4h
time difference · heading east
See live JSI→USM fares Phone-only fares on this route — call free
Flight time details
5,085 miles nonstop takes roughly 10h 26m 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
- JSI — Skiathos Island National Airport · Skiathos, Greece
- 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 JSI
- VOL · Nea Anchialos Airport38 mi away
- SKU · Skiros Airport55 mi away
- LRA · Larisa Airport64 mi away
- ATH · Eleftherios Venizelos International Airport89 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 JSI from USM?
The flight distance from Skiathos (JSI) to Ko Samui (USM) is 5,085 miles (8,183 km, 4,418 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from JSI to USM?
A nonstop flight takes about 10h 26m 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 Skiathos and Ko Samui?
Ko Samui is 4 hours ahead of Skiathos.
What is the cheapest way to fly from JSI to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on JSI–USM that never appear on search engines, with no booking fees.