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USM to RND: distance & flight time
Ko Samui (Samui Airport) → San Antonio (Randolph Air Force Base)
9,474 mi
15,246 km · 8,232 nm
19h 3m
estimated nonstop flight time
-12h
time difference · heading northeast
See live USM→RND fares Phone-only fares on this route — call free
Flight time details
9,474 miles nonstop takes roughly 19h 3m gate to gate, flying northeast. 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
- RND — Randolph Air Force Base · San Antonio, 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 RND
- SAT · San Antonio International Airport11 mi away
- SSF · Stinson Municipal Airport18 mi away
- AUS · Austin Bergstrom International Airport59 mi away
- SKF · Lackland Air Force Base21 mi away
Frequently asked questions
How far is USM from RND?
The flight distance from Ko Samui (USM) to San Antonio (RND) is 9,474 miles (15,246 km, 8,232 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to RND?
A nonstop flight takes about 19h 3m 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 San Antonio?
San Antonio is 12 hours behind Ko Samui.
What is the cheapest way to fly from USM to RND?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–RND that never appear on search engines, with no booking fees.