# Distance from Onslow Airport (ONS) to St Louis (STL)

> 16,935 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,935 km / 10,523 mi / 9,144 nm
- **Estimated flight time**: 21h
- **Heading**: 46° (northeast)
- **Return heading**: 301° (west northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Australia) → United States
- **Intercontinental**: Oceania → North America
- **Time difference**: -13h (When it's 09:51 in Onslow Airport, it's 20:51 in St Louis)
- **Elevation difference**: 610 ft (STL is higher than ONS)

## Airports

### [Onslow Airport (ONS)](https://www.flightduration.online/airport/ons-onslow-airport/1ef266e0-162b-669c-86a6-06bb2780ed98)

- City: Onslow Airport, Australia
- ICAO: YOLW
- Timezone: Australia/Perth
- Coordinates: -21.670000, 115.110000
- Elevation: 7 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 09:51 in Onslow Airport, it's 20:51 in St Louis.
With a 13-hour time difference, expect significant jet lag.

## Related

- [Onslow Airport (ONS)](https://www.flightduration.online/airport/ons-onslow-airport/1ef266e0-162b-669c-86a6-06bb2780ed98)
- [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)