# Distance from Dayong (DYG) to St Louis (STL)

> 12,168 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 12,168 km / 7,561 mi / 6,570 nm
- **Estimated flight time**: 15h
- **Heading**: 17° (north northeast)
- **Return heading**: 341° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (China) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -13h (When it's 02:09 in Dayong, it's 13:09 in St Louis)
- **Elevation difference**: 75 ft (STL is lower than DYG)

## Airports

### [Dayong Airport (DYG)](https://www.flightduration.online/airport/dyg-dayong-dayong-airport/1ef266e0-1e6e-60b6-9939-06bb2780ed98)

- City: Dayong, China
- ICAO: ZGDY
- Timezone: Asia/Shanghai
- Coordinates: 29.100000, 110.440000
- Elevation: 692 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 02:09 in Dayong, it's 13:09 in St Louis.
With a 13-hour time difference, expect significant jet lag.

## Related

- [Dayong Airport (DYG)](https://www.flightduration.online/airport/dyg-dayong-dayong-airport/1ef266e0-1e6e-60b6-9939-06bb2780ed98)
- [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)