Distance From Okawara Helipad to Siem Reap International Airport

The distance from Okawara Helipad () to Siem Reap International Airport (REP) is 2618 miles or 4213 kilometers or 2274 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 Oshika ( Japan ) to Siem Reap ( Cambodia )?

A one-way nonstop (direct) flight between Oshika and Siem Reap takes around 6 hours 1 minutes.

Estimated flight time from Okawara Helipad, Oshika, Japan to Siem Reap International Airport, Siem Reap, Cambodia is 6 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		4213 km
Statute Miles		2618 miles
Nautical Miles		2274 nm
Avg. Time of Flight		6 hours 1 minutes

Okawara Helipad to Siem Reap International Airport Flight Route Map - to REP Flight Path

Location of Okawara Helipad & Siem Reap International Airport is given below.
Click the map to view Oshika to Siem Reap nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • - REP

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

Location	Local Time
Oshika (Japan)	2026-09-18, 19:18:54 JST
Siem Reap (Cambodia)	2026-09-18, 17:18:54 +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

Okawara Helipad ( / ) Oshika, Japan

Destination

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