Distance From Heffernan Heliport to Siem Reap International Airport

The distance from Heffernan Heliport () to Siem Reap International Airport (REP) is 8732 miles or 14053 kilometers or 7583 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 Prospectville ( United States ) to Siem Reap ( Cambodia )?

A one-way nonstop (direct) flight between Prospectville and Siem Reap takes around 20 hours 4 minutes.

Estimated flight time from Heffernan Heliport, Prospectville, United States to Siem Reap International Airport, Siem Reap, Cambodia is 20 hours 4 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		14053 km
Statute Miles		8732 miles
Nautical Miles		7583 nm
Avg. Time of Flight		20 hours 4 minutes

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

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

Click to see flight route on Google Map between Prospectville, United States and Siem Reap, Cambodia. .

Nonstop flight route between Prospectville, United States and Siem Reap, Cambodia.

Time Difference Between the Airports • - REP

Time difference between Prospectville (United States) and Siem Reap (Cambodia) is 12 Hours.
Siem Reap time is 12 Hours ahead of Prospectville.

Location	Local Time
Prospectville (United States)	2026-11-08, 19:11:43 EST
Siem Reap (Cambodia)	2026-11-09, 07:11:43 +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

Heffernan Heliport ( / 5PS8) Prospectville, United States

Destination

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