# Distance from Seattle (SEA) to Sishen (SIS)

> 16,296 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,296 km / 10,126 mi / 8,799 nm
- **Estimated flight time**: 20h
- **Heading**: 66° (east northeast)
- **Return heading**: 316° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → South Africa
- **Intercontinental**: North America → Africa
- **Time difference**: +9h (When it's 09:41 in Seattle, it's 18:41 in Sishen)
- **Elevation difference**: 3,416 ft (SIS is higher than SEA)

## Airports

### [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

### [Sishen Airport (SIS)](https://www.flightduration.online/airport/sis-sishen-sishen-airport/1ef266de-d48f-6414-bfd9-06bb2780ed98)

- City: Sishen, South Africa
- ICAO: FASS
- Timezone: Africa/Johannesburg
- Coordinates: -27.650000, 23.000000
- Elevation: 3,848 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 09:41 in Seattle, it's 18:41 in Sishen.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Sishen Airport (SIS)](https://www.flightduration.online/airport/sis-sishen-sishen-airport/1ef266de-d48f-6414-bfd9-06bb2780ed98)
- [Flight duration calculator](/#calculator)