# Distance from Seattle (SEA) to Tonghua (TNH)

> 8,014 km · estimated flight time 10h · Long-haul route.

## Summary

- **Distance**: 8,014 km / 4,979 mi / 4,327 nm
- **Estimated flight time**: 10h
- **Heading**: 314° (northwest)
- **Return heading**: 41° (northeast)
- **Classification**: Long-haul
- **Type**: International (United States) → China
- **Intercontinental**: North America → Asia
- **Time difference**: +15h (When it's 12:55 in Seattle, it's 03:55 in Tonghua)
- **Elevation difference**: 768 ft (TNH 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

### [Tonghua Sanyuanpu Airport (TNH)](https://www.flightduration.online/airport/tnh-tonghua-tonghua-sanyuanpu-airport/1ef266e0-216c-651a-9861-06bb2780ed98)

- City: Tonghua, China
- ICAO: ZYTN
- Timezone: Asia/Shanghai
- Coordinates: 42.250000, 125.700000
- Elevation: 1,200 ft

## Route notes

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 12:55 in Seattle, it's 03:55 in Tonghua.
With a 15-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)
- [Tonghua Sanyuanpu Airport (TNH)](https://www.flightduration.online/airport/tnh-tonghua-tonghua-sanyuanpu-airport/1ef266e0-216c-651a-9861-06bb2780ed98)
- [Flight duration calculator](/#calculator)