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EFD to USM: distance & flight time
Houston (Ellington Airport) → Ko Samui (Samui Airport)
9,548 mi
15,366 km · 8,297 nm
19h 11m
estimated nonstop flight time
+12h
time difference · heading northwest
See live EFD→USM fares Phone-only fares on this route — call free
Flight time details
9,548 miles nonstop takes roughly 19h 11m 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
- EFD — Ellington 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 EFD
- IAH · George Bush Intercontinental Houston Airport28 mi away
- HOU · William P Hobby Airport8 mi away
- AAP · Andrau Airpark27 mi away
- GLS · Scholes International At Galveston Airport30 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 EFD from USM?
The flight distance from Houston (EFD) to Ko Samui (USM) is 9,548 miles (15,366 km, 8,297 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from EFD to USM?
A nonstop flight takes about 19h 11m 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 EFD to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on EFD–USM that never appear on search engines, with no booking fees.