Need help booking?
Unpublished phone-only deals available
GLT to USM: distance & flight time
Gladstone (Gladstone Airport) → Ko Samui (Samui Airport)
4,153 mi
6,683 km · 3,609 nm
8h 37m
estimated nonstop flight time
-3h
time difference · heading northwest
See live GLT→USM fares Phone-only fares on this route — call free
Flight time details
4,153 miles nonstop takes roughly 8h 37m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- GLT — Gladstone Airport · Gladstone, Australia
- 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 GLT
- GKL · Great Keppel Is Airport51 mi away
- ROK · Rockhampton Airport58 mi away
- THG · Thangool Airport59 mi away
- BDB · Bundaberg Airport99 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 GLT from USM?
The flight distance from Gladstone (GLT) to Ko Samui (USM) is 4,153 miles (6,683 km, 3,609 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GLT to USM?
A nonstop flight takes about 8h 37m 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 Gladstone and Ko Samui?
Ko Samui is 3 hours behind Gladstone.
What is the cheapest way to fly from GLT to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GLT–USM that never appear on search engines, with no booking fees.