Need help booking?
Unpublished phone-only deals available
GUS to USM: distance & flight time
Peru (Grissom Air Reserve Base) → Ko Samui (Samui Airport)
8,946 mi
14,397 km · 7,774 nm
18h
estimated nonstop flight time
+11h
time difference · heading north
See live GUS→USM fares Phone-only fares on this route — call free
Flight time details
8,946 miles nonstop takes roughly 18h gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- GUS — Grissom Air Reserve Base · Peru, 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 GUS
- OKK · Kokomo Municipal Airport10 mi away
- LAF · Purdue University Airport44 mi away
- AID · Anderson Municipal Darlington Field47 mi away
- MIE · Delaware County Johnson Field49 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 GUS from USM?
The flight distance from Peru (GUS) to Ko Samui (USM) is 8,946 miles (14,397 km, 7,774 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GUS to USM?
A nonstop flight takes about 18h 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 Peru and Ko Samui?
Ko Samui is 11 hours ahead of Peru.
What is the cheapest way to fly from GUS to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GUS–USM that never appear on search engines, with no booking fees.