# Distance from Choibalsan Airport (COQ) to St Louis (STL)

> 10,042 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,042 km / 6,240 mi / 5,422 nm
- **Estimated flight time**: 13h
- **Heading**: 19° (north northeast)
- **Return heading**: 344° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Mongolia) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -13h (When it's 22:27 in Choibalsan Airport, it's 09:27 in St Louis)
- **Elevation difference**: 1,840 ft (STL is lower than COQ)

## Airports

### [Choibalsan Airport (COQ)](https://www.flightduration.online/airport/coq-choibalsan-airport/1ef266e0-1f6e-6fec-8a82-06bb2780ed98)

- City: Choibalsan Airport, Mongolia
- ICAO: ZMCD
- Timezone: Asia/Ulaanbaatar
- Coordinates: 48.140000, 114.650000
- Elevation: 2,457 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 22:27 in Choibalsan Airport, it's 09:27 in St Louis.
With a 13-hour time difference, expect significant jet lag.

## Related

- [Choibalsan Airport (COQ)](https://www.flightduration.online/airport/coq-choibalsan-airport/1ef266e0-1f6e-6fec-8a82-06bb2780ed98)
- [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)