# Distance between Hat Yai (HDY) and Ko Samui (USM)

Flight distance from Hat Yai to Ko Samui (Hat Yai International Airport – Samui Airport) is 181 miles / 291 kilometers / 157 nautical miles. Estimated flight time is 50 minutes.

## Map of flight path from Hat Yai to Ko Samui.

Shortest flight path between Hat Yai International Airport (HDY) and Samui Airport (USM).

## How far is Ko Samui from Hat Yai?

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

Vincenty's formula (applied above)
• 181.102 miles
• 291.456 kilometers
• 157.373 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
• 182.062 miles
• 293.001 kilometers
• 158.208 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 Samui Airport
City: Ko Samui
Country: Thailand
IATA Code: USM
ICAO Code: VTSM
Coordinates: 9°32′52″N, 100°3′43″E

## Time difference and current local times

There is no time difference between Hat Yai and Ko Samui.

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## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 52 kg (114 pounds).

## Frequent Flyer Miles Calculator

Hat Yai (HDY) → Ko Samui (USM).

Distance:
181
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
181

Round trip?