Distance From Sihanoukville International Airport to John Glenn Columbus International Airport, KOS - CMH Distance

The distance from Sihanoukville International Airport (KOS) to John Glenn Columbus International Airport (CMH) is 8918 miles or 14352 kilometers or 7745 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 Columbus ( United States )?

A one-way nonstop (direct) flight between Preah Sihanouk and Columbus takes around 20 hours 30 minutes.

Estimated flight time from Sihanoukville International Airport, Preah Sihanouk, Cambodia to John Glenn Columbus International Airport, Columbus, United States is 20 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 - CMH

Kilometers		14352 km
Statute Miles		8918 miles
Nautical Miles		7745 nm
Avg. Time of Flight		20 hours 30 minutes

Sihanoukville International Airport to John Glenn Columbus International Airport Flight Route Map - KOS to CMH Flight Path

Location of Sihanoukville International Airport & John Glenn Columbus International Airport is given below.
Click the map to view Preah Sihanouk to Columbus nonstop flight path and travel direction.

Click to see flight route on Google Map between Preah Sihanouk, Cambodia and Columbus, United States. .

Nonstop flight route between Preah Sihanouk, Cambodia and Columbus, United States.

Time Difference Between the Airports • KOS - CMH

Time difference between Preah Sihanouk (Cambodia) and Columbus (United States) is 12 Hours.
Columbus time is 12 Hours behind Preah Sihanouk.

Location	Local Time
Preah Sihanouk (Cambodia)	2025-12-05, 19:32:07 +07
Columbus (United States)	2025-12-05, 07:32:07 EST

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

John Glenn Columbus International Airport (CMH / KCMH) Columbus, United States