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CSX to USM: distance & flight time
Changcha (Changsha Huanghua International Airport) → Ko Samui (Samui Airport)
1,546 mi
2,488 km · 1,343 nm
3h 30m
estimated nonstop flight time
-1h
time difference · heading southwest
See live CSX→USM fares Phone-only fares on this route — call free
Flight time details
1,546 miles nonstop takes roughly 3h 30m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- CSX — Changsha Huanghua International Airport · Changcha, China
- 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 CSX
- YIC · Yichun Mingyueshan Airport71 mi away
- HNY · Hengyang Nanyue Airport96 mi away
- CGD · Changde Airport108 mi away
- JGS · Jinggangshan Airport131 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 CSX from USM?
The flight distance from Changcha (CSX) to Ko Samui (USM) is 1,546 miles (2,488 km, 1,343 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CSX to USM?
A nonstop flight takes about 3h 30m 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 Changcha and Ko Samui?
Ko Samui is 1 hour behind Changcha.
What is the cheapest way to fly from CSX to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CSX–USM that never appear on search engines, with no booking fees.