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FNL to USM: distance & flight time
Fort Collins (Northern Colorado Regional Airport) → Ko Samui (Samui Airport)
8,629 mi
13,888 km · 7,499 nm
17h 23m
estimated nonstop flight time
+13h
time difference · heading northwest
See live FNL→USM fares Phone-only fares on this route — call free
Flight time details
8,629 miles nonstop takes roughly 17h 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
- FNL — Northern Colorado Regional Airport · Fort Collins, 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 FNL
- DEN · Denver International Airport45 mi away
- GXY · Greeley–Weld County Airport20 mi away
- WBU · Boulder Municipal Airport31 mi away
- BJC · Rocky Mountain Metropolitan Airport38 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 FNL from USM?
The flight distance from Fort Collins (FNL) to Ko Samui (USM) is 8,629 miles (13,888 km, 7,499 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FNL to USM?
A nonstop flight takes about 17h 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 Fort Collins and Ko Samui?
Ko Samui is 13 hours ahead of Fort Collins.
What is the cheapest way to fly from FNL to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FNL–USM that never appear on search engines, with no booking fees.