# Distance between Ulanhot (HLH) and Muang Xay (ODY)

Flight distance from Ulanhot to Muang Xay (Ulanhot Airport – Oudomsay Airport) is 2086 miles / 3356 kilometers / 1812 nautical miles. Estimated flight time is 4 hours 26 minutes.

Driving distance from Ulanhot (HLH) to Muang Xay (ODY) is 2670 miles / 4297 kilometers and travel time by car is about 46 hours 37 minutes.

## Map of flight path and driving directions from Ulanhot to Muang Xay.

Shortest flight path between Ulanhot Airport (HLH) and Oudomsay Airport (ODY).

## How far is Muang Xay from Ulanhot?

There are several ways to calculate distances between Ulanhot and Muang Xay. Here are two common methods:

Vincenty's formula (applied above)
• 2085.557 miles
• 3356.379 kilometers
• 1812.299 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
• 2087.920 miles
• 3360.182 kilometers
• 1814.353 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).

## Airport information

A Ulanhot Airport
City: Ulanhot
Country: China
IATA Code: HLH
ICAO Code: ZBUL
Coordinates: 46°4′58″N, 122°1′1″E

B Oudomsay Airport
City: Muang Xay
Country: Laos
IATA Code: ODY
ICAO Code: VLOS
Coordinates: 20°40′57″N, 101°59′38″E

## Time difference and current local times

The time difference between Ulanhot and Muang Xay is 1 hour. Muang Xay is 1 hour behind Ulanhot.

CST

+07

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 227 kg (501 pounds).

## Frequent Flyer Miles Calculator

Ulanhot (HLH) → Muang Xay (ODY).

Distance:
2086
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
2086

Round trip?