# Distance from Seattle (SEA) to Masasi (XMI)

> 15,564 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 15,564 km / 9,671 mi / 8,404 nm
- **Estimated flight time**: 19h
- **Heading**: 30° (north northeast)
- **Return heading**: 340° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Tanzania
- **Intercontinental**: North America → Africa
- **Time difference**: +10h (When it's 10:44 in Seattle, it's 20:44 in Masasi)
- **Elevation difference**: 1,268 ft (XMI 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

### [Masasi Airport (XMI)](https://www.flightduration.online/airport/xmi-masasi-masasi-airport/1ef266de-eedb-6caa-9d71-06bb2780ed98)

- City: Masasi, Tanzania
- ICAO: HTMI
- Timezone: Africa/Dar_es_Salaam
- Coordinates: -10.730000, 38.770000
- Elevation: 1,700 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 10:44 in Seattle, it's 20:44 in Masasi.
With a 10-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)
- [Masasi Airport (XMI)](https://www.flightduration.online/airport/xmi-masasi-masasi-airport/1ef266de-eedb-6caa-9d71-06bb2780ed98)
- [Flight duration calculator](/#calculator)