Distance From Sihanoukville International Airport to Imam Khomeini International Airport, KOS - IKA Distance

The distance from Sihanoukville International Airport (KOS) to Imam Khomeini International Airport (IKA) is 3700 miles or 5954 kilometers or 3213 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Preah Sihanouk ( Cambodia ) to Tehran ( Iran )?

A one-way nonstop (direct) flight between Preah Sihanouk and Tehran takes around 8 hours 30 minutes.

Estimated flight time from Sihanoukville International Airport, Preah Sihanouk, Cambodia to Imam Khomeini International Airport, Tehran, Iran is 8 hours 30 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • KOS - IKA

Kilometers		5954 km
Statute Miles		3700 miles
Nautical Miles		3213 nm
Avg. Time of Flight		8 hours 30 minutes

Sihanoukville International Airport to Imam Khomeini International Airport Flight Route Map - KOS to IKA Flight Path

Location of Sihanoukville International Airport & Imam Khomeini International Airport is given below.
Click the map to view Preah Sihanouk to Tehran nonstop flight path and travel direction.

Click to see flight route on Google Map between Preah Sihanouk, Cambodia and Tehran, Iran. .

Nonstop flight route between Preah Sihanouk, Cambodia and Tehran, Iran.

Time Difference Between the Airports • KOS - IKA

Time difference between Preah Sihanouk (Cambodia) and Tehran (Iran) is 3 Hours 30 Minutes.
Tehran time is 3 Hours 30 Minutes behind Preah Sihanouk.

Location	Local Time
Preah Sihanouk (Cambodia)	2026-03-19, 10:02:22 +07
Tehran (Iran)	2026-03-19, 06:32:22 +0330

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Sihanoukville International Airport (KOS / VDSV) Preah Sihanouk, Cambodia

Destination

Imam Khomeini International Airport (IKA / OIIE) Tehran, Iran