# Distance from Nashua (ASH) to Shenzhen (SZX)

> 12,720 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,720 km / 7,904 mi / 6,868 nm
- **Estimated flight time**: 16h
- **Heading**: 355° (north)
- **Return heading**: 4° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → China
- **Intercontinental**: North America → Asia
- **Time difference**: +12h (When it's 20:16 in Nashua, it's 08:16 in Shenzhen)
- **Elevation difference**: 187 ft (SZX is lower than ASH)

## Airports

### [Boire Field (ASH)](https://www.flightduration.online/airport/ash-nashua-boire-field/1ef266df-0eec-61b6-9d0d-06bb2780ed98)

- City: Nashua, United States
- ICAO: KASH
- Timezone: America/New_York
- Coordinates: 42.780000, -71.510000
- Elevation: 200 ft

### [Shenzhen Bao'an International Airport (SZX)](https://www.flightduration.online/airport/szx-shenzhen-shenzhen-baoan-international-airport/1ef266e0-1ea0-675a-a1fd-06bb2780ed98)

- City: Shenzhen, China
- ICAO: ZGSZ
- Timezone: Asia/Shanghai
- Coordinates: 22.640000, 113.810000
- Elevation: 13 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 20:16 in Nashua, it's 08:16 in Shenzhen.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Boire Field (ASH)](https://www.flightduration.online/airport/ash-nashua-boire-field/1ef266df-0eec-61b6-9d0d-06bb2780ed98)
- [Shenzhen Bao'an International Airport (SZX)](https://www.flightduration.online/airport/szx-shenzhen-shenzhen-baoan-international-airport/1ef266e0-1ea0-675a-a1fd-06bb2780ed98)
- [Flight duration calculator](/#calculator)