# Distance from Washington (DCA) to Seosan (HMY)

> 11,275 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 11,275 km / 7,006 mi / 6,088 nm
- **Estimated flight time**: 14h
- **Heading**: 341° (north northwest)
- **Return heading**: 18° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → South Korea
- **Intercontinental**: North America → Asia
- **Time difference**: +13h (When it's 03:37 in Washington, it's 16:37 in Seosan)
- **Elevation difference**: 25 ft (HMY is higher than DCA)

## Airports

### [Ronald Reagan Washington Ntl Airport (DCA)](https://www.flightduration.online/airport/dca-washington-ronald-reagan-washington-ntl-airport/1ef266df-16de-6284-ae10-06bb2780ed98)

- City: Washington, United States
- ICAO: KDCA
- Timezone: America/New_York
- Coordinates: 38.850000, -77.040000
- Elevation: 14 ft

### [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

## 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 03:37 in Washington, it's 16:37 in Seosan.
With a 13-hour time difference, expect significant jet lag.

## Related

- [Ronald Reagan Washington Ntl Airport (DCA)](https://www.flightduration.online/airport/dca-washington-ronald-reagan-washington-ntl-airport/1ef266df-16de-6284-ae10-06bb2780ed98)
- [Seosan Air Base (HMY)](https://www.flightduration.online/airport/hmy-seosan-seosan-air-base/1ef266df-8e37-6862-80fa-06bb2780ed98)
- [Flight duration calculator](/#calculator)