Need help booking?
Unpublished phone-only deals available
PHX to USM: distance & flight time
Phoenix (Phoenix Sky Harbor International Airport) → Ko Samui (Samui Airport)
8,795 mi
14,155 km · 7,643 nm
17h 43m
estimated nonstop flight time
+14h
time difference · heading northwest
See live PHX→USM fares Phone-only fares on this route — call free
Flight time details
8,795 miles nonstop takes roughly 17h 43m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- PHX — Phoenix Sky Harbor International Airport · Phoenix, 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 PHX
- SCF · Scottsdale Airport14 mi away
- MSC · Falcon Field16 mi away
- DVT · Phoenix Deer Valley Airport18 mi away
- GYR · Phoenix Goodyear Airport21 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 PHX from USM?
The flight distance from Phoenix (PHX) to Ko Samui (USM) is 8,795 miles (14,155 km, 7,643 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PHX to USM?
A nonstop flight takes about 17h 43m 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 Phoenix and Ko Samui?
Ko Samui is 14 hours ahead of Phoenix.
What is the cheapest way to fly from PHX to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PHX–USM that never appear on search engines, with no booking fees.