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KOS to GRS: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Grosseto (Grosseto Air Base)
5,852 mi
9,418 km · 5,085 nm
11h 57m
estimated nonstop flight time
-5h
time difference · heading northwest
See live KOS→GRS fares Phone-only fares on this route — call free
Flight time details
5,852 miles nonstop takes roughly 11h 57m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- GRS — Grosseto Air Base · Grosseto, Italy
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 GRS
- SAY · Siena-Ampugnano Airport36 mi away
- EBA · Marina Di Campo Airport42 mi away
- FCO · Leonardo da Vinci–Fiumicino Airport89 mi away
- PSA · Pisa International Airport72 mi away
Frequently asked questions
How far is KOS from GRS?
The flight distance from Sihanoukville (KOS) to Grosseto (GRS) is 5,852 miles (9,418 km, 5,085 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to GRS?
A nonstop flight takes about 11h 57m 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 Grosseto?
Grosseto is 5 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to GRS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–GRS that never appear on search engines, with no booking fees.