Need help booking?
Unpublished phone-only deals available
KOS to GLS: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Galveston (Scholes International At Galveston Airport)
9,420 mi
15,161 km · 8,186 nm
18h 56m
estimated nonstop flight time
-12h
time difference · heading northeast
See live KOS→GLS fares Phone-only fares on this route — call free
Flight time details
9,420 miles nonstop takes roughly 18h 56m 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
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- GLS — Scholes International At Galveston Airport · Galveston, 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 KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 mi away
Near GLS
- IAH · George Bush Intercontinental Houston Airport57 mi away
- EFD · Ellington Airport30 mi away
- HOU · William P Hobby Airport36 mi away
- LJN · Texas Gulf Coast Regional Airport38 mi away
Frequently asked questions
How far is KOS from GLS?
The flight distance from Sihanoukville (KOS) to Galveston (GLS) is 9,420 miles (15,161 km, 8,186 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to GLS?
A nonstop flight takes about 18h 56m 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 Sihanoukville and Galveston?
Galveston is 12 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to GLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–GLS that never appear on search engines, with no booking fees.