# Distance from St Louis (STL) to Baruun Urt Airport (UUN)

> 10,231 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,231 km / 6,357 mi / 5,524 nm
- **Estimated flight time**: 13h
- **Heading**: 344° (north northwest)
- **Return heading**: 18° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Mongolia
- **Intercontinental**: North America → Asia
- **Time difference**: +13h (When it's 09:57 in St Louis, it's 22:57 in Baruun Urt Airport)
- **Elevation difference**: 2,588 ft (UUN is higher than STL)

## Airports

### [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)

- City: St Louis, United States
- ICAO: KSTL
- Timezone: America/Chicago
- Coordinates: 38.750000, -90.370000
- Elevation: 617 ft

### [Baruun Urt Airport (UUN)](https://www.flightduration.online/airport/uun-baruun-urt-airport/1ef266e0-1f6b-6446-894d-06bb2780ed98)

- City: Baruun Urt Airport, Mongolia
- ICAO: ZMBU
- Timezone: Asia/Choibalsan
- Coordinates: 46.660000, 113.280000
- Elevation: 3,205 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 09:57 in St Louis, it's 22:57 in Baruun Urt Airport.
With a 13-hour time difference, expect significant jet lag.

## Related

- [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)
- [Baruun Urt Airport (UUN)](https://www.flightduration.online/airport/uun-baruun-urt-airport/1ef266e0-1f6b-6446-894d-06bb2780ed98)
- [Flight duration calculator](/#calculator)