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IST to KOS: distance & flight time
Istanbul (Istanbul Airport) → Sihanoukville (Sihanoukville International Airport)
4,955 mi
7,974 km · 4,306 nm
10h 11m
estimated nonstop flight time
+4h
time difference · heading east
See live IST→KOS fares Phone-only fares on this route — call free
Flight time details
4,955 miles nonstop takes roughly 10h 11m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time gain when reading arrival times on your ticket.
The two airports
- IST — Istanbul Airport · Istanbul, Turkey
- 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 IST
- ISL · Atatürk International Airport21 mi away
- SAW · Sabiha Gökçen International Airport39 mi away
- TEQ · Tekirdağ Çorlu Airport44 mi away
- BTZ · Bursa Airport73 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 IST from KOS?
The flight distance from Istanbul (IST) to Sihanoukville (KOS) is 4,955 miles (7,974 km, 4,306 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IST to KOS?
A nonstop flight takes about 10h 11m 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 Istanbul and Sihanoukville?
Sihanoukville is 4 hours ahead of Istanbul.
What is the cheapest way to fly from IST to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IST–KOS that never appear on search engines, with no booking fees.