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GLS to KOS: distance & flight time
Galveston (Scholes International At Galveston Airport) → Sihanoukville (Sihanoukville International Airport)
9,420 mi
15,161 km · 8,186 nm
18h 56m
estimated nonstop flight time
+12h
time difference · heading northwest
See live GLS→KOS fares Phone-only fares on this route — call free
Flight time details
9,420 miles nonstop takes roughly 18h 56m 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
- GLS — Scholes International At Galveston Airport · Galveston, United States
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
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 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
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
Frequently asked questions
How far is GLS from KOS?
The flight distance from Galveston (GLS) to Sihanoukville (KOS) 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 GLS to KOS?
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 Galveston and Sihanoukville?
Sihanoukville is 12 hours ahead of Galveston.
What is the cheapest way to fly from GLS to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GLS–KOS that never appear on search engines, with no booking fees.