# Distance between Hat Yai (HDY) and Chiang Mai (CNX)

Flight distance from Hat Yai to Chiang Mai (Hat Yai International Airport – Chiang Mai International Airport) is 819 miles / 1318 kilometers / 712 nautical miles. Estimated flight time is 2 hours 3 minutes.

Driving distance from Hat Yai (HDY) to Chiang Mai (CNX) is 1008 miles / 1622 kilometers and travel time by car is about 18 hours 32 minutes.

## Map of flight path and driving directions from Hat Yai to Chiang Mai.

Shortest flight path between Hat Yai International Airport (HDY) and Chiang Mai International Airport (CNX).

## How far is Chiang Mai from Hat Yai?

There are several ways to calculate distances between Hat Yai and Chiang Mai. Here are two common methods:

Vincenty's formula (applied above)
• 819.167 miles
• 1318.321 kilometers
• 711.836 nautical miles

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

Haversine formula
• 823.258 miles
• 1324.906 kilometers
• 715.392 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).

## Airport information

A Hat Yai International Airport
City: Hat Yai
Country: Thailand
IATA Code: HDY
ICAO Code: VTSS
Coordinates: 6°55′59″N, 100°23′34″E

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

## Time difference and current local times

There is no time difference between Hat Yai and Chiang Mai.

+07

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## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 137 kg (301 pounds).

## Frequent Flyer Miles Calculator

Hat Yai (HDY) → Chiang Mai (CNX).

Distance:
819
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
819

Round trip?