# Distance from Boston (BOS) to Chiayi City (CYI)

> 12,603 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,603 km / 7,831 mi / 6,805 nm
- **Estimated flight time**: 16h
- **Heading**: 349° (north northwest)
- **Return heading**: 9° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Taiwan
- **Intercontinental**: North America → Asia
- **Time difference**: +12h (When it's 18:03 in Boston, it's 06:03 in Chiayi City)
- **Elevation difference**: 66 ft (CYI is higher than BOS)

## Airports

### [General Edward Lawrence Logan International Airport (BOS)](https://www.flightduration.online/airport/bos-boston-general-edward-lawrence-logan-international-airport/1ef266df-112a-6798-90da-06bb2780ed98)

- City: Boston, United States
- ICAO: KBOS
- Timezone: America/New_York
- Coordinates: 42.360000, -71.010000
- Elevation: 19 ft

### [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

## 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 18:03 in Boston, it's 06:03 in Chiayi City.
With a 12-hour time difference, expect significant jet lag.

## Related

- [General Edward Lawrence Logan International Airport (BOS)](https://www.flightduration.online/airport/bos-boston-general-edward-lawrence-logan-international-airport/1ef266df-112a-6798-90da-06bb2780ed98)
- [Chiayi Airport (CYI)](https://www.flightduration.online/airport/cyi-chiayi-city-chiayi-airport/1ef266df-8ad7-6f1e-b1d3-06bb2780ed98)
- [Flight duration calculator](/#calculator)