# Distance from Seosan (HMY) to San Francisco (SFO)

> 9,139 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,139 km / 5,679 mi / 4,935 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 15:04 in Seosan, it's 23:04 in San Francisco)
- **Elevation difference**: 26 ft (SFO is lower than HMY)

## Airports

### [Seosan Air Base (HMY)](https://www.flightduration.online/airport/hmy-seosan-seosan-air-base/1ef266df-8e37-6862-80fa-06bb2780ed98)

- City: Seosan, South Korea
- ICAO: RKTP
- Timezone: Asia/Seoul
- Coordinates: 36.700000, 126.490000
- Elevation: 39 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 15:04 in Seosan, it's 23:04 in San Francisco.
With a 16-hour time difference, expect significant jet lag.

## Related

- [Seosan Air Base (HMY)](https://www.flightduration.online/airport/hmy-seosan-seosan-air-base/1ef266df-8e37-6862-80fa-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)