Distance From Enzan Heliport to Siem Reap International Airport

The distance from Enzan Heliport () to Siem Reap International Airport (REP) is 2665 miles or 4289 kilometers or 2315 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 Koshu ( Japan ) to Siem Reap ( Cambodia )?

A one-way nonstop (direct) flight between Koshu and Siem Reap takes around 6 hours 7 minutes.

Estimated flight time from Enzan Heliport, Koshu, Japan to Siem Reap International Airport, Siem Reap, Cambodia is 6 hours 7 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 • - REP

Kilometers		4289 km
Statute Miles		2665 miles
Nautical Miles		2315 nm
Avg. Time of Flight		6 hours 7 minutes

Enzan Heliport to Siem Reap International Airport Flight Route Map - to REP Flight Path

Location of Enzan Heliport & Siem Reap International Airport is given below.
Click the map to view Koshu to Siem Reap nonstop flight path and travel direction.

Click to see flight route on Google Map between Koshu, Japan and Siem Reap, Cambodia. .

Nonstop flight route between Koshu, Japan and Siem Reap, Cambodia.

Time Difference Between the Airports • - REP

Time difference between Koshu (Japan) and Siem Reap (Cambodia) is 2 Hours.
Siem Reap time is 2 Hours behind Koshu.

Location	Local Time
Koshu (Japan)	2026-08-05, 03:50:50 JST
Siem Reap (Cambodia)	2026-08-05, 01:50:50 +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

Enzan Heliport ( / ) Koshu, Japan

Destination

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