# Distance from Seattle (SEA) to Tessenei (TES)

> 12,750 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,750 km / 7,922 mi / 6,884 nm
- **Estimated flight time**: 16h
- **Heading**: 22° (north northeast)
- **Return heading**: 345° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Eritrea
- **Intercontinental**: North America → Africa
- **Time difference**: +10h (When it's 12:47 in Seattle, it's 22:47 in Tessenei)
- **Elevation difference**: 1,586 ft (TES 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

### [Tessenei Airport (TES)](https://www.flightduration.online/airport/tes-tessenei-tessenei-airport/1ef266de-ebb2-6362-b192-06bb2780ed98)

- City: Tessenei, Eritrea
- ICAO: HHTS
- Timezone: Africa/Asmara
- Coordinates: 15.120000, 36.680000
- Elevation: 2,018 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 12:47 in Seattle, it's 22:47 in Tessenei.
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)
- [Tessenei Airport (TES)](https://www.flightduration.online/airport/tes-tessenei-tessenei-airport/1ef266de-ebb2-6362-b192-06bb2780ed98)
- [Flight duration calculator](/#calculator)