Distance From Kelani-Peliyagoda Seaplane Base to Siem Reap International Airport, KEZ - REP Distance

The distance from Kelani-Peliyagoda Seaplane Base (KEZ) to Siem Reap International Airport (REP) is 1684 miles or 2709 kilometers or 1462 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 Colombo ( Sri Lanka ) to Siem Reap ( Cambodia )?

A one-way nonstop (direct) flight between Colombo and Siem Reap takes around 3 hours 52 minutes.

Estimated flight time from Kelani-Peliyagoda Seaplane Base, Colombo, Sri Lanka to Siem Reap International Airport, Siem Reap, Cambodia is 3 hours 52 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 • KEZ - REP

Kilometers		2709 km
Statute Miles		1684 miles
Nautical Miles		1462 nm
Avg. Time of Flight		3 hours 52 minutes

Kelani-Peliyagoda Seaplane Base to Siem Reap International Airport Flight Route Map - KEZ to REP Flight Path

Location of Kelani-Peliyagoda Seaplane Base & Siem Reap International Airport is given below.
Click the map to view Colombo to Siem Reap nonstop flight path and travel direction.

Click to see flight route on Google Map between Colombo, Sri Lanka and Siem Reap, Cambodia. .

Nonstop flight route between Colombo, Sri Lanka and Siem Reap, Cambodia.

Time Difference Between the Airports • KEZ - REP

Time difference between Colombo (Sri Lanka) and Siem Reap (Cambodia) is 1 Hours 30 Minutes.
Siem Reap time is 1 Hours 30 Minutes ahead of Colombo.

Location	Local Time
Colombo (Sri Lanka)	2026-03-19, 08:15:37 +0530
Siem Reap (Cambodia)	2026-03-19, 09:45:37 +07

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

Kelani-Peliyagoda Seaplane Base (KEZ / ) Colombo, Sri Lanka

Destination

Siem Reap International Airport (REP / VDSR) Siem Reap, Cambodia