# Distance from Ascension Island (ASI) to San Francisco (SFO)

> 12,129 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 12,129 km / 7,537 mi / 6,549 nm
- **Estimated flight time**: 15h
- **Heading**: 307° (northwest)
- **Return heading**: 85° (east)
- **Classification**: Ultra-long-haul
- **Type**: International (SH) → United States
- **Time difference**: -7h (When it's 09:06 in Ascension Island, it's 02:06 in San Francisco)
- **Elevation difference**: 265 ft (SFO is lower than ASI)

## Airports

### [RAF Ascension Island (ASI)](https://www.flightduration.online/airport/asi-ascension-island-raf-ascension-island/1ef266de-d88a-637a-8b82-06bb2780ed98)

- City: Ascension Island, SH
- ICAO: FHAW
- Timezone: Atlantic/St_Helena
- Coordinates: -7.970000, -14.390000
- Elevation: 278 ft

### [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

## 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 09:06 in Ascension Island, it's 02:06 in San Francisco.
With a 7-hour time difference, expect significant jet lag.

## Related

- [RAF Ascension Island (ASI)](https://www.flightduration.online/airport/asi-ascension-island-raf-ascension-island/1ef266de-d88a-637a-8b82-06bb2780ed98)
- [San Francisco International Airport (SFO)](https://www.flightduration.online/airport/sfo-san-francisco-san-francisco-international-airport/1ef266df-382a-66ea-a1cc-06bb2780ed98)
- [Flight duration calculator](/#calculator)