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KOS to ISU: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Sulaymaniyah (Sulaymaniyah International Airport)
4,022 mi
6,473 km · 3,495 nm
8h 21m
estimated nonstop flight time
-4h
time difference · heading northwest
See live KOS→ISU fares Phone-only fares on this route — call free
Flight time details
4,022 miles nonstop takes roughly 8h 21m 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
- ISU — Sulaymaniyah International Airport · Sulaymaniyah, Iraq
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 ISU
- KIK · Kirkuk Air Base55 mi away
- EBL · Erbil International Airport89 mi away
- SDG · Sanandaj Airport98 mi away
- XQC · Joint Base Balad124 mi away
Frequently asked questions
How far is KOS from ISU?
The flight distance from Sihanoukville (KOS) to Sulaymaniyah (ISU) is 4,022 miles (6,473 km, 3,495 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to ISU?
A nonstop flight takes about 8h 21m 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 ISU?
Nonstop service on KOS–ISU 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 21m nonstop estimate.
What is the time difference between Sihanoukville and Sulaymaniyah?
Sulaymaniyah is 4 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to ISU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–ISU that never appear on search engines, with no booking fees.
Why are some KOS to ISU fares phone-only?
Consolidator contracts let us sell certain KOS–ISU 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.