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GCH to USM: distance & flight time
Gachsaran (Gachsaran Airport) → Ko Samui (Samui Airport)
3,471 mi
5,587 km · 3,017 nm
7h 16m
estimated nonstop flight time
+3.5h
time difference · heading east
See live GCH→USM fares Phone-only fares on this route — call free
Flight time details
3,471 miles nonstop takes roughly 7h 16m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time gain when reading arrival times on your ticket.
The two airports
- GCH — Gachsaran Airport · Gachsaran, Iran
- 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 GCH
- YES · Yasouj Airport50 mi away
- AKW · Aghajari Airport74 mi away
- KHK · Khark Island Airport80 mi away
- OMI · Omidiyeh Airport84 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 GCH from USM?
The flight distance from Gachsaran (GCH) to Ko Samui (USM) is 3,471 miles (5,587 km, 3,017 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GCH to USM?
A nonstop flight takes about 7h 16m 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 Gachsaran and Ko Samui?
Ko Samui is 3.5 hours ahead of Gachsaran.
What is the cheapest way to fly from GCH to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GCH–USM that never appear on search engines, with no booking fees.