# Distance from Decimomannu (DCI) to Seattle (SEA)

> 9,228 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,228 km / 5,734 mi / 4,983 nm
- **Estimated flight time**: 12h
- **Heading**: 329° (north northwest)
- **Return heading**: 36° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Italy) → United States
- **Intercontinental**: Europe → North America
- **Time difference**: -9h (When it's 22:16 in Decimomannu, it's 13:16 in Seattle)
- **Elevation difference**: 332 ft (SEA is higher than DCI)

## Airports

### [Decimomannu Airport (DCI)](https://www.flightduration.online/airport/dci-decimomannu-decimomannu-airport/1ef266df-502e-60f2-a2f2-06bb2780ed98)

- City: Decimomannu, Italy
- ICAO: LIED
- Timezone: Europe/Rome
- Coordinates: 39.350000, 8.970000
- Elevation: 100 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 22:16 in Decimomannu, it's 13:16 in Seattle.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Decimomannu Airport (DCI)](https://www.flightduration.online/airport/dci-decimomannu-decimomannu-airport/1ef266df-502e-60f2-a2f2-06bb2780ed98)
- [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)