Need help booking?
Unpublished phone-only deals available
SFZ to USM: distance & flight time
Smithfield (North Central State Airport) → Ko Samui (Samui Airport)
8,841 mi
14,227 km · 7,682 nm
17h 48m
estimated nonstop flight time
+11h
time difference · heading north
See live SFZ→USM fares Phone-only fares on this route — call free
Flight time details
8,841 miles nonstop takes roughly 17h 48m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- SFZ — North Central State Airport · Smithfield, 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 SFZ
- BOS · General Edward Lawrence Logan International Airport39 mi away
- PVD · Theodore Francis Green State Airport14 mi away
- NCO · Quonset State Airport23 mi away
- OWD · Norwood Memorial Airport25 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 SFZ from USM?
The flight distance from Smithfield (SFZ) to Ko Samui (USM) is 8,841 miles (14,227 km, 7,682 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFZ to USM?
A nonstop flight takes about 17h 48m 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 Smithfield and Ko Samui?
Ko Samui is 11 hours ahead of Smithfield.
What is the cheapest way to fly from SFZ to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFZ–USM that never appear on search engines, with no booking fees.