# Distance from Seattle (SEA) to Thaba-Tseka (THB)

> 16,826 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,826 km / 10,455 mi / 9,085 nm
- **Estimated flight time**: 21h
- **Heading**: 62° (east northeast)
- **Return heading**: 317° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Lesotho
- **Intercontinental**: North America → Africa
- **Time difference**: +9h (When it's 11:20 in Seattle, it's 20:20 in Thaba-Tseka)
- **Elevation difference**: 7,068 ft (THB 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

### [Thaba-Tseka Airport (THB)](https://www.flightduration.online/airport/thb-thaba-tseka-thaba-tseka-airport/1ef266de-e0b3-63c6-ba6d-06bb2780ed98)

- City: Thaba-Tseka, Lesotho
- ICAO: FXTA
- Timezone: Africa/Maseru
- Coordinates: -29.520000, 28.620000
- Elevation: 7,500 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 11:20 in Seattle, it's 20:20 in Thaba-Tseka.
With a 9-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)
- [Thaba-Tseka Airport (THB)](https://www.flightduration.online/airport/thb-thaba-tseka-thaba-tseka-airport/1ef266de-e0b3-63c6-ba6d-06bb2780ed98)
- [Flight duration calculator](/#calculator)