# Distance from Seattle (SEA) to Mbanza Congo (SSY)

> 13,860 km · estimated flight time 17h · Ultra-long-haul route.

## Summary

- **Distance**: 13,860 km / 8,612 mi / 7,484 nm
- **Estimated flight time**: 17h
- **Heading**: 56° (northeast)
- **Return heading**: 326° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Angola
- **Intercontinental**: North America → Africa
- **Time difference**: +8h (When it's 14:41 in Seattle, it's 22:41 in Mbanza Congo)
- **Elevation difference**: 1,428 ft (SSY 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

### [Mbanza Congo Airport (SSY)](https://www.flightduration.online/airport/ssy-mbanza-congo-mbanza-congo-airport/1ef266de-dc79-6f4e-86e2-06bb2780ed98)

- City: Mbanza Congo, Angola
- ICAO: FNBC
- Timezone: Africa/Luanda
- Coordinates: -6.270000, 14.250000
- Elevation: 1,860 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 14:41 in Seattle, it's 22:41 in Mbanza Congo.
With a 8-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)
- [Mbanza Congo Airport (SSY)](https://www.flightduration.online/airport/ssy-mbanza-congo-mbanza-congo-airport/1ef266de-dc79-6f4e-86e2-06bb2780ed98)
- [Flight duration calculator](/#calculator)