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USM to IAH: distance & flight time
Ko Samui (Samui Airport) → Houston (George Bush Intercontinental Houston Airport)
9,520 mi
15,321 km · 8,272 nm
19h 8m
estimated nonstop flight time
-12h
time difference · heading north
See live USM→IAH fares Phone-only fares on this route — call free
Flight time details
9,520 miles nonstop takes roughly 19h 8m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- IAH — George Bush Intercontinental Houston Airport · Houston, United States
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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Near IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
Frequently asked questions
How far is USM from IAH?
The flight distance from Ko Samui (USM) to Houston (IAH) is 9,520 miles (15,321 km, 8,272 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to IAH?
A nonstop flight takes about 19h 8m 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 Ko Samui and Houston?
Houston is 12 hours behind Ko Samui.
What is the cheapest way to fly from USM to IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–IAH that never appear on search engines, with no booking fees.