# Distance from San Francisco (SFO) to Sines Airport (SIE)

> 9,205 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,205 km / 5,720 mi / 4,970 nm
- **Estimated flight time**: 12h
- **Heading**: 47° (northeast)
- **Return heading**: 313° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Portugal
- **Intercontinental**: North America → Europe
- **Time difference**: +8h (When it's 22:41 in San Francisco, it's 06:41 in Sines Airport)
- **Elevation difference**: 13 ft (SIE is lower than SFO)

## Airports

### [San Francisco International Airport (SFO)](https://www.flightduration.online/airport/sfo-san-francisco-san-francisco-international-airport/1ef266df-382a-66ea-a1cc-06bb2780ed98)

- City: San Francisco, United States
- ICAO: KSFO
- Timezone: America/Los_Angeles
- Coordinates: 37.620000, -122.380000
- Elevation: 13 ft

### [Sines Airport (SIE)](https://www.flightduration.online/airport/sie-sines-airport/1ef266df-55f7-63c6-861d-06bb2780ed98)

- City: Sines Airport, Portugal
- ICAO: LPSI
- Timezone: Europe/Lisbon
- Coordinates: 37.940000, -8.820000
- 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 22:41 in San Francisco, it's 06:41 in Sines Airport.
With a 8-hour time difference, expect significant jet lag.

## Related

- [San Francisco International Airport (SFO)](https://www.flightduration.online/airport/sfo-san-francisco-san-francisco-international-airport/1ef266df-382a-66ea-a1cc-06bb2780ed98)
- [Sines Airport (SIE)](https://www.flightduration.online/airport/sie-sines-airport/1ef266df-55f7-63c6-861d-06bb2780ed98)
- [Flight duration calculator](/#calculator)