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GNI to USM: distance & flight time
Green Island (Lyudao Airport) → Ko Samui (Samui Airport)
1,682 mi
2,707 km · 1,461 nm
3h 46m
estimated nonstop flight time
-1h
time difference · heading southwest
See live GNI→USM fares Phone-only fares on this route — call free
Flight time details
1,682 miles nonstop takes roughly 3h 46m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- GNI — Lyudao Airport · Green Island, Taiwan
- 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 GNI
- TTT · Taitung Airport24 mi away
- KYD · Lanyu Airport45 mi away
- PIF · Pingtung North Airport63 mi away
- HCN · Hengchun Airport64 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 GNI from USM?
The flight distance from Green Island (GNI) to Ko Samui (USM) is 1,682 miles (2,707 km, 1,461 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GNI to USM?
A nonstop flight takes about 3h 46m 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 Green Island and Ko Samui?
Ko Samui is 1 hour behind Green Island.
What is the cheapest way to fly from GNI to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GNI–USM that never appear on search engines, with no booking fees.