# Distance from Altenrhein (ACH) to Seattle (SEA)

> 8,477 km · estimated flight time 11h · Long-haul route.

## Summary

- **Distance**: 8,477 km / 5,267 mi / 4,577 nm
- **Estimated flight time**: 11h
- **Heading**: 329° (north northwest)
- **Return heading**: 31° (north northeast)
- **Classification**: Long-haul
- **Type**: International (Switzerland) → United States
- **Intercontinental**: Europe → North America
- **Time difference**: -9h (When it's 03:30 in Altenrhein, it's 18:30 in Seattle)
- **Elevation difference**: 874 ft (SEA is lower than ACH)

## Airports

### [St Gallen Altenrhein Airport (ACH)](https://www.flightduration.online/airport/ach-altenrhein-st-gallen-altenrhein-airport/1ef266df-5802-6f44-959c-06bb2780ed98)

- City: Altenrhein, Switzerland
- ICAO: LSZR
- Timezone: Europe/Zurich
- Coordinates: 47.480000, 9.560000
- Elevation: 1,306 ft

### [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)

- City: Seattle, United States
- ICAO: KSEA
- Timezone: America/Los_Angeles
- Coordinates: 47.450000, -122.310000
- Elevation: 432 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 03:30 in Altenrhein, it's 18:30 in Seattle.
With a 9-hour time difference, expect significant jet lag.

## Related

- [St Gallen Altenrhein Airport (ACH)](https://www.flightduration.online/airport/ach-altenrhein-st-gallen-altenrhein-airport/1ef266df-5802-6f44-959c-06bb2780ed98)
- [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Flight duration calculator](/#calculator)