Distance From Siem Reap International Airport to Chiang Mai International Airport, REP - CNX Distance

The distance from Siem Reap International Airport (REP) to Chiang Mai International Airport (CNX) is 491 miles or 790 kilometers or 426 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 Siem Reap ( Cambodia ) to Chiang Mai ( Thailand )?

A one-way nonstop (direct) flight between Siem Reap and Chiang Mai takes around 1 hours 7 minutes.

Estimated flight time from Siem Reap International Airport, Siem Reap, Cambodia to Chiang Mai International Airport, Chiang Mai, Thailand is 1 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 - CNX

Kilometers		790 km
Statute Miles		491 miles
Nautical Miles		426 nm
Avg. Time of Flight		1 hours 7 minutes

Siem Reap International Airport to Chiang Mai International Airport Flight Route Map - REP to CNX Flight Path

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

Click to see flight route on Google Map between Siem Reap, Cambodia and Chiang Mai, Thailand. .

Nonstop flight route between Siem Reap, Cambodia and Chiang Mai, Thailand.

Time Difference Between the Airports • REP - CNX

Time difference between Siem Reap (Cambodia) and Chiang Mai (Thailand) is 0 Hours.

Location	Local Time
Siem Reap (Cambodia)	2026-08-07, 18:29:21 +07
Chiang Mai (Thailand)	2026-08-07, 18:29:21 +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

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

Destination

Chiang Mai International Airport (CNX / VTCC) Chiang Mai, Thailand