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SDY to USM: distance & flight time
Sidney (Sidney - Richland Regional Airport) → Ko Samui (Samui Airport)
8,211 mi
13,214 km · 7,135 nm
16h 34m
estimated nonstop flight time
+13h
time difference · heading northwest
See live SDY→USM fares Phone-only fares on this route — call free
Flight time details
8,211 miles nonstop takes roughly 16h 34m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- SDY — Sidney - Richland Regional Airport · Sidney, United States
- 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 SDY
- ISN · Sloulin Field International Airport41 mi away
- GDV · Dawson Community Airport49 mi away
- OLF · L M Clayton Airport69 mi away
- DIK · Dickinson Theodore Roosevelt Regional Airport91 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 SDY from USM?
The flight distance from Sidney (SDY) to Ko Samui (USM) is 8,211 miles (13,214 km, 7,135 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SDY to USM?
A nonstop flight takes about 16h 34m 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 Sidney and Ko Samui?
Ko Samui is 13 hours ahead of Sidney.
What is the cheapest way to fly from SDY to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SDY–USM that never appear on search engines, with no booking fees.