# Distance from Seattle (SEA) to Huangshan (TXN)

> 9,518 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,518 km / 5,914 mi / 5,139 nm
- **Estimated flight time**: 12h
- **Heading**: 311° (northwest)
- **Return heading**: 36° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → China
- **Intercontinental**: North America → Asia
- **Time difference**: +15h (When it's 12:04 in Seattle, it's 03:04 in Huangshan)
- **Elevation difference**: 432 ft (TXN is lower than SEA)

## Airports

### [Seattle-Tacoma International Airport (SEA)](https://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

### [Tunxi International Airport (TXN)](https://flightduration.online/airport/txn-huangshan-tunxi-international-airport/1ef266e0-2051-6ce8-87a9-06bb2780ed98)

- City: Huangshan, China
- ICAO: ZSTX
- Timezone: Asia/Shanghai
- Coordinates: 29.730000, 118.260000
- Elevation: 0 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 12:04 in Seattle, it's 03:04 in Huangshan.
With a 15-hour time difference, expect significant jet lag.

## Related

- [Seattle-Tacoma International Airport (SEA)](https://flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Tunxi International Airport (TXN)](https://flightduration.online/airport/txn-huangshan-tunxi-international-airport/1ef266e0-2051-6ce8-87a9-06bb2780ed98)
- [Flight duration calculator](/#calculator)