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LEX to USM: distance & flight time
Lexington KY (Blue Grass Airport) → Ko Samui (Samui Airport)
9,135 mi
14,702 km · 7,938 nm
18h 23m
estimated nonstop flight time
+11h
time difference · heading north
See live LEX→USM fares Phone-only fares on this route — call free
Flight time details
9,135 miles nonstop takes roughly 18h 23m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- LEX — Blue Grass Airport · Lexington KY, 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 LEX
- FFT · Capital City Airport19 mi away
- LOU · Bowman Field59 mi away
- SDF · Louisville International Standiford Field62 mi away
- SME · Lake Cumberland Regional Airport68 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 LEX from USM?
The flight distance from Lexington KY (LEX) to Ko Samui (USM) is 9,135 miles (14,702 km, 7,938 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LEX to USM?
A nonstop flight takes about 18h 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 Lexington KY and Ko Samui?
Ko Samui is 11 hours ahead of Lexington KY.
What is the cheapest way to fly from LEX to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LEX–USM that never appear on search engines, with no booking fees.