# Distance from Yaounde (NSI) to St Louis (STL)

> 10,775 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 10,775 km / 6,695 mi / 5,818 nm
- **Estimated flight time**: 14h
- **Heading**: 310° (northwest)
- **Return heading**: 80° (east)
- **Classification**: Ultra-long-haul
- **Type**: International (Cameroon) → United States
- **Intercontinental**: Africa → North America
- **Time difference**: -6h (When it's 14:23 in Yaounde, it's 08:23 in St Louis)
- **Elevation difference**: 1,661 ft (STL is lower than NSI)

## Airports

### [Yaounde Nsimalen International Airport (NSI)](https://www.flightduration.online/airport/nsi-yaounde-yaounde-nsimalen-international-airport/1ef266de-d91a-616e-b5be-06bb2780ed98)

- City: Yaounde, Cameroon
- ICAO: FKYS
- Timezone: Africa/Douala
- Coordinates: 3.720000, 11.550000
- Elevation: 2,278 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 14:23 in Yaounde, it's 08:23 in St Louis.
With a 6-hour time difference, expect significant jet lag.

## Related

- [Yaounde Nsimalen International Airport (NSI)](https://www.flightduration.online/airport/nsi-yaounde-yaounde-nsimalen-international-airport/1ef266de-d91a-616e-b5be-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)