# Distance from Seoul (GMP) to San Francisco (SFO)

> 9,056 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,056 km / 5,627 mi / 4,890 nm
- **Estimated flight time**: 12h
- **Heading**: 48° (northeast)
- **Return heading**: 311° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (South Korea) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -16h (When it's 23:21 in Seoul, it's 07:21 in San Francisco)
- **Elevation difference**: 45 ft (SFO is lower than GMP)

## Airports

### [Gimpo International Airport (GMP)](https://www.flightduration.online/airport/gmp-seoul-gimpo-international-airport/1ef266df-8e1d-67f0-9b6a-06bb2780ed98)

- City: Seoul, South Korea
- ICAO: RKSS
- Timezone: Asia/Seoul
- Coordinates: 37.560000, 126.790000
- Elevation: 58 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 23:21 in Seoul, it's 07:21 in San Francisco.
With a 16-hour time difference, expect significant jet lag.

## Related

- [Gimpo International Airport (GMP)](https://www.flightduration.online/airport/gmp-seoul-gimpo-international-airport/1ef266df-8e1d-67f0-9b6a-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)