# Distance from Christchurch (CHC) to Siena (SAY)

> 18,504 km · estimated flight time 23h · Ultra-long-haul route.

## Summary

- **Distance**: 18,504 km / 11,498 mi / 9,991 nm
- **Estimated flight time**: 23h
- **Heading**: 276° (west)
- **Return heading**: 97° (east)
- **Classification**: Ultra-long-haul
- **Type**: International (New Zealand) → Italy
- **Intercontinental**: Oceania → Europe
- **Time difference**: -10h (When it's 05:08 in Christchurch, it's 19:08 in Siena)
- **Elevation difference**: 511 ft (SAY is higher than CHC)

## Airports

### [Christchurch International Airport (CHC)](https://www.flightduration.online/airport/chc-christchurch-christchurch-international-airport/1ef266df-7661-64f4-a788-06bb2780ed98)

- City: Christchurch, New Zealand
- ICAO: NZCH
- Timezone: Pacific/Auckland
- Coordinates: -43.490000, 172.530000
- Elevation: 123 ft

### [Siena / Ampugnano Airport (SAY)](https://www.flightduration.online/airport/say-siena-siena-ampugnano-airport/1ef266df-5127-6c2e-a7d4-06bb2780ed98)

- City: Siena, Italy
- ICAO: LIQS
- Timezone: Europe/Rome
- Coordinates: 43.260000, 11.260000
- Elevation: 634 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 05:08 in Christchurch, it's 19:08 in Siena.
With a 10-hour time difference, expect significant jet lag.

## Related

- [Christchurch International Airport (CHC)](https://www.flightduration.online/airport/chc-christchurch-christchurch-international-airport/1ef266df-7661-64f4-a788-06bb2780ed98)
- [Siena / Ampugnano Airport (SAY)](https://www.flightduration.online/airport/say-siena-siena-ampugnano-airport/1ef266df-5127-6c2e-a7d4-06bb2780ed98)
- [Flight duration calculator](/#calculator)