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GFN to USM: distance & flight time
Grafton (Grafton Airport) → Ko Samui (Samui Airport)
4,444 mi
7,153 km · 3,862 nm
9h 11m
estimated nonstop flight time
-3h
time difference · heading northwest
See live GFN→USM fares Phone-only fares on this route — call free
Flight time details
4,444 miles nonstop takes roughly 9h 11m 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
- GFN — Grafton Airport · Grafton, 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 GFN
- CFS · Coffs Harbour Airport39 mi away
- LSY · Lismore Airport66 mi away
- BNK · Ballina Byron Gateway Airport72 mi away
- GLI · Glen Innes Airport81 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 GFN from USM?
The flight distance from Grafton (GFN) to Ko Samui (USM) is 4,444 miles (7,153 km, 3,862 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GFN to USM?
A nonstop flight takes about 9h 11m 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 Grafton and Ko Samui?
Ko Samui is 3 hours behind Grafton.
What is the cheapest way to fly from GFN to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GFN–USM that never appear on search engines, with no booking fees.