Distance From International Science Center Heliport to Siem Reap International Airport

The distance from International Science Center Heliport () to Siem Reap International Airport (REP) is 7838 miles or 12614 kilometers or 6807 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 Sunnyvale ( United States ) to Siem Reap ( Cambodia )?

A one-way nonstop (direct) flight between Sunnyvale and Siem Reap takes around 18 hours 1 minutes.

Estimated flight time from International Science Center Heliport, Sunnyvale, United States to Siem Reap International Airport, Siem Reap, Cambodia is 18 hours 1 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		12614 km
Statute Miles		7838 miles
Nautical Miles		6807 nm
Avg. Time of Flight		18 hours 1 minutes

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

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

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

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

Time Difference Between the Airports • - REP

Time difference between Sunnyvale (United States) and Siem Reap (Cambodia) is 14 Hours.
Siem Reap time is 14 Hours ahead of Sunnyvale.

Location	Local Time
Sunnyvale (United States)	2026-03-15, 13:31:22 PDT
Siem Reap (Cambodia)	2026-03-16, 03:31:22 +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

International Science Center Heliport ( / ) Sunnyvale, United States

Destination

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