How far is Haikou from Roi Et?

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

The driving distance from Roi Et (ROI) to Haikou (HAK) is 982 miles / 1580 kilometers, and travel time by car is about 24 hours 3 minutes.

Distance from Roi Et to Haikou

There are several ways to calculate the distance from Roi Et to Haikou. 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 Roi Et to Haikou?

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

What is the time difference between Roi Et and Haikou?

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

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

On average, flying from Roi Et to Haikou 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 Roi Et to Haikou

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

Airport information

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

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