# Distance from Changsha (CSX) to Seattle (SEA)

> 9,940 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 9,940 km / 6,176 mi / 5,367 nm
- **Estimated flight time**: 13h
- **Heading**: 34° (northeast)
- **Return heading**: 313° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (China) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -15h (When it's 11:04 in Changsha, it's 20:04 in Seattle)
- **Elevation difference**: 215 ft (SEA is higher than CSX)

## Airports

### [Changsha Huanghua Airport (CSX)](https://www.flightduration.online/airport/csx-changsha-changsha-huanghua-airport/1ef266e0-1e79-6e7a-826c-06bb2780ed98)

- City: Changsha, China
- ICAO: ZGHA
- Timezone: Asia/Shanghai
- Coordinates: 28.190000, 113.220000
- Elevation: 217 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 11:04 in Changsha, it's 20:04 in Seattle.
With a 15-hour time difference, expect significant jet lag.

## Related

- [Changsha Huanghua Airport (CSX)](https://www.flightduration.online/airport/csx-changsha-changsha-huanghua-airport/1ef266e0-1e79-6e7a-826c-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)