Distance From Roberts Army Heliport to Chiang Mai International Airport, SYL - CNX Distance

The distance from Roberts Army Heliport (SYL) to Chiang Mai International Airport (CNX) is 7858 miles or 12646 kilometers or 6824 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 Camp Roberts/San Miguel ( United States ) to Chiang Mai ( Thailand )?

A one-way nonstop (direct) flight between Camp Roberts/San Miguel and Chiang Mai takes around 18 hours 3 minutes.

Estimated flight time from Roberts Army Heliport, Camp Roberts/San Miguel, United States to Chiang Mai International Airport, Chiang Mai, Thailand is 18 hours 3 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 • SYL - CNX

Kilometers		12646 km
Statute Miles		7858 miles
Nautical Miles		6824 nm
Avg. Time of Flight		18 hours 3 minutes

Roberts Army Heliport to Chiang Mai International Airport Flight Route Map - SYL to CNX Flight Path

Location of Roberts Army Heliport & Chiang Mai International Airport is given below.
Click the map to view Camp Roberts/San Miguel to Chiang Mai nonstop flight path and travel direction.

Click to see flight route on Google Map between Camp Roberts/San Miguel, United States and Chiang Mai, Thailand. .

Nonstop flight route between Camp Roberts/San Miguel, United States and Chiang Mai, Thailand.

Time Difference Between the Airports • SYL - CNX

Time difference between Camp Roberts/San Miguel (United States) and Chiang Mai (Thailand) is 15 Hours.
Chiang Mai time is 15 Hours ahead of Camp Roberts/San Miguel.

Location	Local Time
Camp Roberts/San Miguel (United States)	2025-12-15, 20:45:36 PST
Chiang Mai (Thailand)	2025-12-16, 11:45:36 +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

Roberts Army Heliport (SYL / KSYL) Camp Roberts/San Miguel, United States

Destination

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