How far is Sanya from Roi Et?

The distance between Roi Et (Roi Et Airport) and Sanya (Sanya Phoenix International Airport) is 402 miles / 647 kilometers / 349 nautical miles.

The driving distance from Roi Et (ROI) to Sanya (SYX) is 1138 miles / 1831 kilometers, and travel time by car is about 26 hours 54 minutes.

Distance from Roi Et to Sanya

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

Vincenty's formula (applied above)

• 401.777 miles
• 646.597 kilometers
• 349.134 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

• 401.556 miles
• 646.242 kilometers
• 348.943 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 Sanya?

The estimated flight time from Roi Et Airport to Sanya Phoenix International Airport is 1 hour and 15 minutes.

What is the time difference between Roi Et and Sanya?

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

Flight carbon footprint between Roi Et Airport (ROI) and Sanya Phoenix International Airport (SYX)

On average, flying from Roi Et to Sanya generates about 84 kg of CO2 per passenger, and 84 kilograms equals 186 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 Sanya

See the map of the shortest flight path between Roi Et Airport (ROI) and Sanya Phoenix International Airport (SYX).

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	Sanya Phoenix International Airport
City:	Sanya
Country:	China
IATA Code:	SYX
ICAO Code:	ZJSY
Coordinates:	18°18′10″N, 109°24′43″E