Distance From Happy Heliport to Chiang Mai International Airport

The distance from Happy Heliport () to Chiang Mai International Airport (CNX) is 8218 miles or 13226 kilometers or 7137 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 Dartmouth ( United States ) to Chiang Mai ( Thailand )?

A one-way nonstop (direct) flight between Dartmouth and Chiang Mai takes around 18 hours 53 minutes.

Estimated flight time from Happy Heliport, Dartmouth, United States to Chiang Mai International Airport, Chiang Mai, Thailand is 18 hours 53 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 • - CNX

Kilometers		13226 km
Statute Miles		8218 miles
Nautical Miles		7137 nm
Avg. Time of Flight		18 hours 53 minutes

Happy Heliport to Chiang Mai International Airport Flight Route Map - to CNX Flight Path

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

Click to see flight route on Google Map between Dartmouth, United States and Chiang Mai, Thailand. .

Nonstop flight route between Dartmouth, United States and Chiang Mai, Thailand.

Time Difference Between the Airports • - CNX

Time difference between Dartmouth (United States) and Chiang Mai (Thailand) is 12 Hours.
Chiang Mai time is 12 Hours ahead of Dartmouth.

Location	Local Time
Dartmouth (United States)	2025-12-15, 17:04:23 EST
Chiang Mai (Thailand)	2025-12-16, 05:04:23 +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

Happy Heliport ( / 3MA6) Dartmouth, United States

Destination

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