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BOI to USM: distance & flight time
Boise (Boise Air Terminal/Gowen Field) → Ko Samui (Samui Airport)
8,118 mi
13,065 km · 7,055 nm
16h 23m
estimated nonstop flight time
+13h
time difference · heading northwest
See live BOI→USM fares Phone-only fares on this route — call free
Flight time details
8,118 miles nonstop takes roughly 16h 23m 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
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 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 BOI from USM?
The flight distance from Boise (BOI) to Ko Samui (USM) is 8,118 miles (13,065 km, 7,055 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOI to USM?
A nonstop flight takes about 16h 23m 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 Boise and Ko Samui?
Ko Samui is 13 hours ahead of Boise.
What is the cheapest way to fly from BOI to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOI–USM that never appear on search engines, with no booking fees.