# Distance from Sion (SIR) to St Louis (STL)

> 7,527 km · estimated flight time 10h · Long-haul route.

## Summary

- **Distance**: 7,527 km / 4,677 mi / 4,064 nm
- **Estimated flight time**: 10h
- **Heading**: 303° (west northwest)
- **Return heading**: 48° (northeast)
- **Classification**: Long-haul
- **Type**: International (Switzerland) → United States
- **Intercontinental**: Europe → North America
- **Time difference**: -7h (When it's 22:08 in Sion, it's 15:08 in St Louis)
- **Elevation difference**: 968 ft (STL is lower than SIR)

## Airports

### [Sion Airport (SIR)](https://www.flightduration.online/airport/sir-sion-sion-airport/1ef266df-5741-6844-a33f-06bb2780ed98)

- City: Sion, Switzerland
- ICAO: LSGS
- Timezone: Europe/Zurich
- Coordinates: 46.220000, 7.330000
- Elevation: 1,585 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 a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 22:08 in Sion, it's 15:08 in St Louis.
With a 7-hour time difference, expect significant jet lag.

## Related

- [Sion Airport (SIR)](https://www.flightduration.online/airport/sir-sion-sion-airport/1ef266df-5741-6844-a33f-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)