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DWH to USM: distance & flight time
Houston (David Wayne Hooks Memorial Airport) → Ko Samui (Samui Airport)
9,510 mi
15,305 km · 8,264 nm
19h 7m
estimated nonstop flight time
+12h
time difference · heading northwest
See live DWH→USM fares Phone-only fares on this route — call free
Flight time details
9,510 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
- DWH — David Wayne Hooks Memorial Airport · Houston, 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 DWH
- IAH · George Bush Intercontinental Houston Airport14 mi away
- IWS · West Houston Airport18 mi away
- CXO · Conroe-North Houston Regional Airport22 mi away
- AAP · Andrau Airpark24 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 DWH from USM?
The flight distance from Houston (DWH) to Ko Samui (USM) is 9,510 miles (15,305 km, 8,264 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DWH 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 Houston and Ko Samui?
Ko Samui is 12 hours ahead of Houston.
What is the cheapest way to fly from DWH to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DWH–USM that never appear on search engines, with no booking fees.