# Distance from Washington (IAD) to Tainan City (TNN)

> 12,895 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,895 km / 8,012 mi / 6,963 nm
- **Estimated flight time**: 16h
- **Heading**: 342° (north northwest)
- **Return heading**: 15° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Taiwan
- **Intercontinental**: North America → Asia
- **Time difference**: +12h (When it's 10:36 in Washington, it's 22:36 in Tainan City)
- **Elevation difference**: 249 ft (TNN 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

### [Tainan Airport (TNN)](https://www.flightduration.online/airport/tnn-tainan-city-tainan-airport/1ef266df-8aef-6c86-a5dd-06bb2780ed98)

- City: Tainan City, Taiwan
- ICAO: RCNN
- Timezone: Asia/Taipei
- Coordinates: 22.950000, 120.210000
- Elevation: 63 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 10:36 in Washington, it's 22:36 in Tainan City.
With a 12-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)
- [Tainan Airport (TNN)](https://www.flightduration.online/airport/tnn-tainan-city-tainan-airport/1ef266df-8aef-6c86-a5dd-06bb2780ed98)
- [Flight duration calculator](/#calculator)