# Distance from Newcastle (NCS) to Seattle (SEA)

> 16,769 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,769 km / 10,420 mi / 9,054 nm
- **Estimated flight time**: 21h
- **Heading**: 320° (northwest)
- **Return heading**: 58° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (South Africa) → United States
- **Intercontinental**: Africa → North America
- **Time difference**: -9h (When it's 05:17 in Newcastle, it's 20:17 in Seattle)
- **Elevation difference**: 3,642 ft (SEA is lower than NCS)

## Airports

### [Newcastle Airport (NCS)](https://www.flightduration.online/airport/ncs-newcastle-newcastle-airport/1ef266de-d371-6e92-aaf0-06bb2780ed98)

- City: Newcastle, South Africa
- ICAO: FANC
- Timezone: Africa/Johannesburg
- Coordinates: -27.770000, 29.980000
- Elevation: 4,074 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 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 05:17 in Newcastle, it's 20:17 in Seattle.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Newcastle Airport (NCS)](https://www.flightduration.online/airport/ncs-newcastle-newcastle-airport/1ef266de-d371-6e92-aaf0-06bb2780ed98)
- [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)