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WYS to USM: distance & flight time
West Yellowstone (Yellowstone Airport) → Ko Samui (Samui Airport)
8,215 mi
13,220 km · 7,138 nm
16h 34m
estimated nonstop flight time
+13h
time difference · heading northwest
See live WYS→USM fares Phone-only fares on this route — call free
Flight time details
8,215 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
- WYS — Yellowstone Airport · West Yellowstone, 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 WYS
- BZN · Gallatin Field75 mi away
- JAC · Jackson Hole Airport77 mi away
- LVM · Mission Field77 mi away
- IDA · Idaho Falls Regional Airport94 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 WYS from USM?
The flight distance from West Yellowstone (WYS) to Ko Samui (USM) is 8,215 miles (13,220 km, 7,138 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WYS 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 West Yellowstone and Ko Samui?
Ko Samui is 13 hours ahead of West Yellowstone.
What is the cheapest way to fly from WYS to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WYS–USM that never appear on search engines, with no booking fees.