# Distance from Washington (IAD) to Nankoku (KCZ)

> 11,342 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 11,342 km / 7,047 mi / 6,124 nm
- **Estimated flight time**: 14h
- **Heading**: 334° (north northwest)
- **Return heading**: 24° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Japan
- **Intercontinental**: North America → Asia
- **Time difference**: +13h (When it's 14:14 in Washington, it's 03:14 in Nankoku)
- **Elevation difference**: 270 ft (KCZ is lower than IAD)

## Airports

### [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)

- City: Washington, United States
- ICAO: KIAD
- Timezone: America/New_York
- Coordinates: 38.900000, -77.500000
- Elevation: 312 ft

### [Kochi Ryoma Airport (KCZ)](https://www.flightduration.online/airport/kcz-nankoku-kochi-ryoma-airport/1ef266df-8c4e-6fc8-acda-06bb2780ed98)

- City: Nankoku, Japan
- ICAO: RJOK
- Timezone: Asia/Tokyo
- Coordinates: 33.550000, 133.670000
- Elevation: 42 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 14:14 in Washington, it's 03:14 in Nankoku.
With a 13-hour time difference, expect significant jet lag.

## Related

- [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)
- [Kochi Ryoma Airport (KCZ)](https://www.flightduration.online/airport/kcz-nankoku-kochi-ryoma-airport/1ef266df-8c4e-6fc8-acda-06bb2780ed98)
- [Flight duration calculator](/#calculator)