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IST to USM: distance & flight time
Istanbul (Istanbul Airport) → Ko Samui (Samui Airport)
4,816 mi
7,750 km · 4,185 nm
9h 55m
estimated nonstop flight time
+4h
time difference · heading east
See live IST→USM fares Phone-only fares on this route — call free
Flight time details
4,816 miles nonstop takes roughly 9h 55m 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
- IST — Istanbul Airport · Istanbul, Turkey
- 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 IST
- ISL · Atatürk International Airport21 mi away
- SAW · Sabiha Gökçen International Airport39 mi away
- TEQ · Tekirdağ Çorlu Airport44 mi away
- BTZ · Bursa Airport73 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 IST from USM?
The flight distance from Istanbul (IST) to Ko Samui (USM) is 4,816 miles (7,750 km, 4,185 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IST to USM?
A nonstop flight takes about 9h 55m 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 Istanbul and Ko Samui?
Ko Samui is 4 hours ahead of Istanbul.
What is the cheapest way to fly from IST to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IST–USM that never appear on search engines, with no booking fees.