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KOS to IKA: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Tehran (Imam Khomeini International Airport)
3,699 mi
5,953 km · 3,215 nm
7h 43m
estimated nonstop flight time
-3.5h
time difference · heading northwest
See live KOS→IKA fares Phone-only fares on this route — call free
Flight time details
3,699 miles nonstop takes roughly 7h 43m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- IKA — Imam Khomeini International Airport · Tehran, Iran
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 IKA
- THR · Mehrabad International Airport21 mi away
- PYK · Payam International Airport31 mi away
- GZW · Qazvin Airport84 mi away
- NSH · Noshahr Airport88 mi away
Frequently asked questions
How far is KOS from IKA?
The flight distance from Sihanoukville (KOS) to Tehran (IKA) is 3,699 miles (5,953 km, 3,215 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to IKA?
A nonstop flight takes about 7h 43m 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 Tehran?
Tehran is 3.5 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to IKA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–IKA that never appear on search engines, with no booking fees.