# Distance from Chiayi City (CYI) to Washington (IAD)

> 12,835 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,835 km / 7,975 mi / 6,930 nm
- **Estimated flight time**: 16h
- **Heading**: 15° (north northeast)
- **Return heading**: 342° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Taiwan) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -12h (When it's 05:25 in Chiayi City, it's 17:25 in Washington)
- **Elevation difference**: 227 ft (IAD is higher than CYI)

## Airports

### [Chiayi Airport (CYI)](https://www.flightduration.online/airport/cyi-chiayi-city-chiayi-airport/1ef266df-8ad7-6f1e-b1d3-06bb2780ed98)

- City: Chiayi City, Taiwan
- ICAO: RCKU
- Timezone: Asia/Taipei
- Coordinates: 23.460000, 120.390000
- Elevation: 85 ft

### [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

## 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 05:25 in Chiayi City, it's 17:25 in Washington.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Chiayi Airport (CYI)](https://www.flightduration.online/airport/cyi-chiayi-city-chiayi-airport/1ef266df-8ad7-6f1e-b1d3-06bb2780ed98)
- [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)
- [Flight duration calculator](/#calculator)