# How far is Chiang Mai from Ko Samui?

The distance between Ko Samui (Samui Airport) and Chiang Mai (Chiang Mai International Airport) is 638 miles / 1027 kilometers / 554 nautical miles. The estimated flight time is 1 hour and 42 minutes.

638
Miles
1027
Kilometers
554
Nautical miles
1 h 42 min
117 kg

## Distance from Ko Samui to Chiang Mai

There are several ways to calculate the distance from Ko Samui to Chiang Mai. 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 Ko Samui to Chiang Mai?

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

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

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

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

On average, flying from Ko Samui to Chiang Mai 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 Ko Samui to Chiang Mai

Shortest flight path between Samui Airport (USM) and Chiang Mai International Airport (CNX).

## Airport information

Origin Samui Airport
City: Ko Samui
Country: Thailand
IATA Code: USM
ICAO Code: VTSM
Coordinates: 9°32′52″N, 100°3′43″E
Destination Chiang Mai International Airport
City: Chiang Mai
Country: Thailand
IATA Code: CNX
ICAO Code: VTCC
Coordinates: 18°46′0″N, 98°57′45″E