# Distance from St Louis (STL) to Ulaangom Airport (ULO)

> 10,147 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,147 km / 6,305 mi / 5,479 nm
- **Estimated flight time**: 13h
- **Heading**: 358° (north)
- **Return heading**: 2° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Mongolia
- **Intercontinental**: North America → Asia
- **Time difference**: +12h (When it's 18:04 in St Louis, it's 06:04 in Ulaangom Airport)
- **Elevation difference**: 617 ft (ULO is lower 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

### [Ulaangom Airport (ULO)](https://www.flightduration.online/airport/ulo-ulaangom-airport/1ef266e0-1f95-641c-9663-06bb2780ed98)

- City: Ulaangom Airport, Mongolia
- ICAO: ZMUG
- Timezone: Asia/Hovd
- Coordinates: 49.970000, 92.080000
- Elevation: 0 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 18:04 in St Louis, it's 06:04 in Ulaangom Airport.
With a 12-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)
- [Ulaangom Airport (ULO)](https://www.flightduration.online/airport/ulo-ulaangom-airport/1ef266e0-1f95-641c-9663-06bb2780ed98)
- [Flight duration calculator](/#calculator)