# Distance between Hat Yai (HDY) and Chiang Rai (CEI)

Flight distance from Hat Yai to Chiang Rai (Hat Yai International Airport – Chiang Rai International Airport) is 896 miles / 1441 kilometers / 778 nautical miles. Estimated flight time is 2 hours 11 minutes.

Driving distance from Hat Yai (HDY) to Chiang Rai (CEI) is 1099 miles / 1768 kilometers and travel time by car is about 19 hours 57 minutes.

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

Shortest flight path between Hat Yai International Airport (HDY) and Chiang Rai International Airport (CEI).

## How far is Chiang Rai from Hat Yai?

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

Vincenty's formula (applied above)
• 895.686 miles
• 1441.467 kilometers
• 778.330 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
• 900.183 miles
• 1448.704 kilometers
• 782.238 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 Rai International Airport
City: Chiang Rai
Country: Thailand
IATA Code: CEI
ICAO Code: VTCT
Coordinates: 19°57′8″N, 99°52′58″E

## Time difference and current local times

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

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## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 143 kg (316 pounds).

## Frequent Flyer Miles Calculator

Hat Yai (HDY) → Chiang Rai (CEI).

Distance:
896
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
896

Round trip?