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IIL to KOS: distance & flight time
Ilam (Ilam Airport) → Sihanoukville (Sihanoukville International Airport)
3,938 mi
6,337 km · 3,422 nm
8h 11m
estimated nonstop flight time
+3.5h
time difference · heading east
See live IIL→KOS fares Phone-only fares on this route — call free
Flight time details
3,938 miles nonstop takes roughly 8h 11m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time gain when reading arrival times on your ticket.
The two airports
- IIL — Ilam Airport · Ilam, Iran
- 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 IIL
- KSH · Shahid Ashrafi Esfahani Airport68 mi away
- KHD · Khoram Abad Airport109 mi away
- SDG · Sanandaj Airport120 mi away
- XQC · Joint Base Balad120 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 IIL from KOS?
The flight distance from Ilam (IIL) to Sihanoukville (KOS) is 3,938 miles (6,337 km, 3,422 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IIL to KOS?
A nonstop flight takes about 8h 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 Ilam and Sihanoukville?
Sihanoukville is 3.5 hours ahead of Ilam.
What is the cheapest way to fly from IIL to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IIL–KOS that never appear on search engines, with no booking fees.