How far is Roi Et from Haikou?

The distance between Haikou (Haikou Meilan International Airport) and Roi Et (Roi Et Airport) is 512 miles / 824 kilometers / 445 nautical miles.

The driving distance from Haikou (HAK) to Roi Et (ROI) is 981 miles / 1578 kilometers, and travel time by car is about 23 hours 59 minutes.

Distance from Haikou to Roi Et

There are several ways to calculate the distance from Haikou to Roi Et. Here are two standard methods:

Vincenty's formula (applied above)

• 512.157 miles
• 824.237 kilometers
• 445.052 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

• 512.241 miles
• 824.372 kilometers
• 445.125 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 Haikou to Roi Et?

The estimated flight time from Haikou Meilan International Airport to Roi Et Airport is 1 hour and 28 minutes.

What is the time difference between Haikou and Roi Et?

The time difference between Haikou and Roi Et is 1 hour. Roi Et is 1 hour behind Haikou.

Flight carbon footprint between Haikou Meilan International Airport (HAK) and Roi Et Airport (ROI)

On average, flying from Haikou to Roi Et generates about 100 kg of CO2 per passenger, and 100 kilograms equals 221 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Haikou to Roi Et

See the map of the shortest flight path between Haikou Meilan International Airport (HAK) and Roi Et Airport (ROI).

Airport information

Origin	Haikou Meilan International Airport
City:	Haikou
Country:	China
IATA Code:	HAK
ICAO Code:	ZJHK
Coordinates:	19°56′5″N, 110°27′32″E

Destination	Roi Et Airport
City:	Roi Et
Country:	Thailand
IATA Code:	ROI
ICAO Code:	VTUV
Coordinates:	16°7′0″N, 103°46′26″E