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COU to USM: distance & flight time
Columbia (Columbia Regional Airport) → Ko Samui (Samui Airport)
9,003 mi
14,489 km · 7,823 nm
18h 7m
estimated nonstop flight time
+12h
time difference · heading north
See live COU→USM fares Phone-only fares on this route — call free
Flight time details
9,003 miles nonstop takes roughly 18h 7m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- COU — Columbia Regional Airport · Columbia, 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 COU
- JEF · Jefferson City Memorial Airport16 mi away
- AIZ · Lee C Fine Memorial Airport53 mi away
- SZL · Whiteman Air Force Base72 mi away
- TBN · Waynesville-St. Robert Regional Forney field75 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 COU from USM?
The flight distance from Columbia (COU) to Ko Samui (USM) is 9,003 miles (14,489 km, 7,823 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COU to USM?
A nonstop flight takes about 18h 7m 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 Columbia and Ko Samui?
Ko Samui is 12 hours ahead of Columbia.
What is the cheapest way to fly from COU to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COU–USM that never appear on search engines, with no booking fees.