# Distance from Dayong (DYG) to Seattle (SEA)

> 10,004 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,004 km / 6,216 mi / 5,401 nm
- **Estimated flight time**: 13h
- **Heading**: 33° (north northeast)
- **Return heading**: 316° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (China) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -15h (When it's 01:05 in Dayong, it's 10:05 in Seattle)
- **Elevation difference**: 260 ft (SEA is lower than DYG)

## Airports

### [Dayong Airport (DYG)](https://flightduration.online/airport/dyg-dayong-dayong-airport/1ef266e0-1e6e-60b6-9939-06bb2780ed98)

- City: Dayong, China
- ICAO: ZGDY
- Timezone: Asia/Shanghai
- Coordinates: 29.100000, 110.440000
- Elevation: 692 ft

### [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

## 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 01:05 in Dayong, it's 10:05 in Seattle.
With a 15-hour time difference, expect significant jet lag.

## Related

- [Dayong Airport (DYG)](https://flightduration.online/airport/dyg-dayong-dayong-airport/1ef266e0-1e6e-60b6-9939-06bb2780ed98)
- [Seattle-Tacoma International Airport (SEA)](https://flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Flight duration calculator](/#calculator)