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KOS to GKL: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Great Keppel Island (Great Keppel Is Airport)
3,958 mi
6,370 km · 3,439 nm
8h 14m
estimated nonstop flight time
+3h
time difference · heading southeast
See live KOS→GKL fares Phone-only fares on this route — call free
Flight time details
3,958 miles nonstop takes roughly 8h 14m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- GKL — Great Keppel Is Airport · Great Keppel Island, Australia
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 GKL
- ROK · Rockhampton Airport33 mi away
- GLT · Gladstone Airport51 mi away
- THG · Thangool Airport93 mi away
- TDR · Theodore Airport136 mi away
Frequently asked questions
How far is KOS from GKL?
The flight distance from Sihanoukville (KOS) to Great Keppel Island (GKL) is 3,958 miles (6,370 km, 3,439 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to GKL?
A nonstop flight takes about 8h 14m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from KOS to GKL?
Nonstop service on KOS–GKL depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 8h 14m nonstop estimate.
What is the time difference between Sihanoukville and Great Keppel Island?
Great Keppel Island is 3 hours ahead of Sihanoukville.
What is the cheapest way to fly from KOS to GKL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–GKL that never appear on search engines, with no booking fees.
Why are some KOS to GKL fares phone-only?
Consolidator contracts let us sell certain KOS–GKL tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.