How far is Ulsan from Roi Et?

The distance between Roi Et (Roi Et Airport) and Ulsan (Ulsan Airport) is 2070 miles / 3332 kilometers / 1799 nautical miles.

The driving distance from Roi Et (ROI) to Ulsan (USN) is 3219 miles / 5180 kilometers, and travel time by car is about 60 hours 53 minutes.

Distance from Roi Et to Ulsan

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

Vincenty's formula (applied above)

• 2070.234 miles
• 3331.718 kilometers
• 1798.984 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

• 2071.281 miles
• 3333.403 kilometers
• 1799.894 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 Ulsan?

The estimated flight time from Roi Et Airport to Ulsan Airport is 4 hours and 25 minutes.

What is the time difference between Roi Et and Ulsan?

The time difference between Roi Et and Ulsan is 2 hours. Ulsan is 2 hours ahead of Roi Et.

Flight carbon footprint between Roi Et Airport (ROI) and Ulsan Airport (USN)

On average, flying from Roi Et to Ulsan generates about 225 kg of CO2 per passenger, and 225 kilograms equals 497 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 Ulsan

See the map of the shortest flight path between Roi Et Airport (ROI) and Ulsan Airport (USN).

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	Ulsan Airport
City:	Ulsan
Country:	South Korea
IATA Code:	USN
ICAO Code:	RKPU
Coordinates:	35°35′36″N, 129°21′7″E