# Distance from Nachingwea (NCH) to Seattle (SEA)

> 15,525 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 15,525 km / 9,647 mi / 8,383 nm
- **Estimated flight time**: 19h
- **Heading**: 340° (north northwest)
- **Return heading**: 29° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Tanzania) → United States
- **Intercontinental**: Africa → North America
- **Time difference**: -10h (When it's 08:54 in Nachingwea, it's 22:54 in Seattle)
- **Elevation difference**: 968 ft (SEA is lower than NCH)

## Airports

### [Nachingwea Airport (NCH)](https://www.flightduration.online/airport/nch-nachingwea-nachingwea-airport/1ef266de-ef02-6f80-a469-06bb2780ed98)

- City: Nachingwea, Tanzania
- ICAO: HTNA
- Timezone: Africa/Dar_es_Salaam
- Coordinates: -10.360000, 38.780000
- Elevation: 1,400 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 08:54 in Nachingwea, it's 22:54 in Seattle.
With a 10-hour time difference, expect significant jet lag.

## Related

- [Nachingwea Airport (NCH)](https://www.flightduration.online/airport/nch-nachingwea-nachingwea-airport/1ef266de-ef02-6f80-a469-06bb2780ed98)
- [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)