How far is Ko Samui from Chiang Mai?

The distance between Chiang Mai (Chiang Mai International Airport) and Ko Samui (Samui Airport) is 638 miles / 1027 kilometers / 554 nautical miles.

Distance from Chiang Mai to Ko Samui

There are several ways to calculate the distance from Chiang Mai to Ko Samui. Here are two standard methods:

Vincenty's formula (applied above)

• 638.075 miles
• 1026.882 kilometers
• 554.472 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula

• 641.206 miles
• 1031.921 kilometers
• 557.193 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Chiang Mai to Ko Samui?

The estimated flight time from Chiang Mai International Airport to Samui Airport is 1 hour and 42 minutes.

What is the time difference between Chiang Mai and Ko Samui?

There is no time difference between Chiang Mai and Ko Samui.

Flight carbon footprint between Chiang Mai International Airport (CNX) and Samui Airport (USM)

On average, flying from Chiang Mai to Ko Samui generates about 117 kg of CO2 per passenger, and 117 kilograms equals 259 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Chiang Mai to Ko Samui

See the map of the shortest flight path between Chiang Mai International Airport (CNX) and Samui Airport (USM).

Airport information

Origin	Chiang Mai International Airport
City:	Chiang Mai
Country:	Thailand
IATA Code:	CNX
ICAO Code:	VTCC
Coordinates:	18°46′0″N, 98°57′45″E

Destination	Samui Airport
City:	Ko Samui
Country:	Thailand
IATA Code:	USM
ICAO Code:	VTSM
Coordinates:	9°32′52″N, 100°3′43″E

Airlines flying from Chiang Mai (CNX) to Ko Samui (USM)

Bangkok Airways