# Distance from Washington (IAD) to Sion (SIR)

> 6,658 km · estimated flight time 9h · Long-haul route.

## Summary

- **Distance**: 6,658 km / 4,137 mi / 3,595 nm
- **Estimated flight time**: 9h
- **Heading**: 53° (northeast)
- **Return heading**: 296° (west northwest)
- **Classification**: Long-haul
- **Type**: International (United States) → Switzerland
- **Intercontinental**: North America → Europe
- **Time difference**: +6h (When it's 22:37 in Washington, it's 04:37 in Sion)
- **Elevation difference**: 1,273 ft (SIR is higher than IAD)

## Airports

### [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)

- City: Washington, United States
- ICAO: KIAD
- Timezone: America/New_York
- Coordinates: 38.900000, -77.500000
- Elevation: 312 ft

### [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

## 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 22:37 in Washington, it's 04:37 in Sion.
With a 6-hour time difference, expect significant jet lag.

## Related

- [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)
- [Sion Airport (SIR)](https://www.flightduration.online/airport/sir-sion-sion-airport/1ef266df-5741-6844-a33f-06bb2780ed98)
- [Flight duration calculator](/#calculator)