How far is Udon Thani from Roi Et?

The distance between Roi Et (Roi Et Airport) and Udon Thani (Udon Thani International Airport) is 109 miles / 175 kilometers / 95 nautical miles.

The driving distance from Roi Et (ROI) to Udon Thani (UTH) is 157 miles / 252 kilometers, and travel time by car is about 3 hours 27 minutes.

Distance from Roi Et to Udon Thani

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

Vincenty's formula (applied above)

• 109.038 miles
• 175.480 kilometers
• 94.751 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

• 109.318 miles
• 175.930 kilometers
• 94.994 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 Udon Thani?

The estimated flight time from Roi Et Airport to Udon Thani International Airport is 42 minutes.

What is the time difference between Roi Et and Udon Thani?

There is no time difference between Roi Et and Udon Thani.

Flight carbon footprint between Roi Et Airport (ROI) and Udon Thani International Airport (UTH)

On average, flying from Roi Et to Udon Thani generates about 41 kg of CO2 per passenger, and 41 kilograms equals 91 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 Udon Thani

See the map of the shortest flight path between Roi Et Airport (ROI) and Udon Thani International Airport (UTH).

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	Udon Thani International Airport
City:	Udon Thani
Country:	Thailand
IATA Code:	UTH
ICAO Code:	VTUD
Coordinates:	17°23′11″N, 102°47′16″E