# Distance from Bulgan Sum Airport (HBU) to St Louis (STL)

> 10,578 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,578 km / 6,573 mi / 5,712 nm
- **Estimated flight time**: 13h
- **Heading**: 2° (north)
- **Return heading**: 359° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (Mongolia) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -12h (When it's 14:11 in Bulgan Sum Airport, it's 02:11 in St Louis)
- **Elevation difference**: 3,304 ft (STL is lower than HBU)

## Airports

### [Bulgan Sum Airport (HBU)](https://www.flightduration.online/airport/hbu-bulgan-sum-airport/1ef266e0-1f66-6fae-90dd-06bb2780ed98)

- City: Bulgan Sum Airport, Mongolia
- ICAO: ZMBS
- Timezone: Asia/Hovd
- Coordinates: 46.100000, 91.580000
- Elevation: 3,921 ft

### [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

## 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 14:11 in Bulgan Sum Airport, it's 02:11 in St Louis.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Bulgan Sum Airport (HBU)](https://www.flightduration.online/airport/hbu-bulgan-sum-airport/1ef266e0-1f66-6fae-90dd-06bb2780ed98)
- [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)
- [Flight duration calculator](/#calculator)