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KOS to IST: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Istanbul (Istanbul Airport)
4,955 mi
7,974 km · 4,306 nm
10h 11m
estimated nonstop flight time
-4h
time difference · heading northwest
See live KOS→IST fares Phone-only fares on this route — call free
Flight time details
4,955 miles nonstop takes roughly 10h 11m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- IST — Istanbul Airport · Istanbul, Turkey
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 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
Frequently asked questions
How far is KOS from IST?
The flight distance from Sihanoukville (KOS) to Istanbul (IST) 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 KOS to IST?
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.
Are there nonstop flights from KOS to IST?
Nonstop service on KOS–IST 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 10h 11m nonstop estimate.
What is the time difference between Sihanoukville and Istanbul?
Istanbul is 4 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to IST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–IST that never appear on search engines, with no booking fees.
Why are some KOS to IST fares phone-only?
Consolidator contracts let us sell certain KOS–IST 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.