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COT to USM: distance & flight time
Cotulla (Cotulla-La Salle County Airport) → Ko Samui (Samui Airport)
9,512 mi
15,309 km · 8,266 nm
19h 7m
estimated nonstop flight time
+12h
time difference · heading northwest
See live COT→USM fares Phone-only fares on this route — call free
Flight time details
9,512 miles nonstop takes roughly 19h 7m gate to gate, flying northwest. 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
- COT — Cotulla-La Salle County Airport · Cotulla, 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 COT
- UVA · Garner Field61 mi away
- LRD · Laredo International Airport65 mi away
- NLD · Quetzalcóatl International Airport73 mi away
- SKF · Lackland Air Force Base75 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 COT from USM?
The flight distance from Cotulla (COT) to Ko Samui (USM) is 9,512 miles (15,309 km, 8,266 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COT to USM?
A nonstop flight takes about 19h 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 Cotulla and Ko Samui?
Ko Samui is 12 hours ahead of Cotulla.
What is the cheapest way to fly from COT to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COT–USM that never appear on search engines, with no booking fees.