How far is Ulaanbaatar from Roi Et?
The distance between Roi Et (Roi Et Airport) and Ulaanbaatar (Buyant-Ukhaa International Airport) is 2193 miles / 3529 kilometers / 1906 nautical miles.
The driving distance from Roi Et (ROI) to Ulaanbaatar (ULN) is 2806 miles / 4516 kilometers, and travel time by car is about 56 hours 25 minutes.
Roi Et Airport – Buyant-Ukhaa International Airport
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Distance from Roi Et to Ulaanbaatar
There are several ways to calculate the distance from Roi Et to Ulaanbaatar. Here are two standard methods:
Vincenty's formula (applied above)- 2192.898 miles
- 3529.127 kilometers
- 1905.576 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- 2198.691 miles
- 3538.450 kilometers
- 1910.610 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 Ulaanbaatar?
The estimated flight time from Roi Et Airport to Buyant-Ukhaa International Airport is 4 hours and 39 minutes.
What is the time difference between Roi Et and Ulaanbaatar?
The time difference between Roi Et and Ulaanbaatar is 1 hour. Ulaanbaatar is 1 hour ahead of Roi Et.
Flight carbon footprint between Roi Et Airport (ROI) and Buyant-Ukhaa International Airport (ULN)
On average, flying from Roi Et to Ulaanbaatar generates about 240 kg of CO2 per passenger, and 240 kilograms equals 528 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 Ulaanbaatar
See the map of the shortest flight path between Roi Et Airport (ROI) and Buyant-Ukhaa International Airport (ULN).
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 | Buyant-Ukhaa International Airport |
|---|---|
| City: | Ulaanbaatar |
| Country: | Mongolia  |
| IATA Code: | ULN |
| ICAO Code: | ZMUB |
| Coordinates: | 47°50′35″N, 106°46′1″E |