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SMN to USM: distance & flight time
Salmon (Lemhi County Airport) → Ko Samui (Samui Airport)
8,109 mi
13,051 km · 7,047 nm
16h 22m
estimated nonstop flight time
+13h
time difference · heading northwest
See live SMN→USM fares Phone-only fares on this route — call free
Flight time details
8,109 miles nonstop takes roughly 16h 22m 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
- SMN — Lemhi County Airport · Salmon, 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 SMN
- BTM · Bert Mooney Airport88 mi away
- MYL · McCall Municipal Airport110 mi away
- SUN · Friedman Memorial Airport114 mi away
- MSO · Missoula International Airport124 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 SMN from USM?
The flight distance from Salmon (SMN) to Ko Samui (USM) is 8,109 miles (13,051 km, 7,047 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SMN to USM?
A nonstop flight takes about 16h 22m 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 Salmon and Ko Samui?
Ko Samui is 13 hours ahead of Salmon.
What is the cheapest way to fly from SMN to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SMN–USM that never appear on search engines, with no booking fees.