# Distance from Adelaide (ADL) to St. Mary's (ISC)

> 16,726 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,726 km / 10,393 mi / 9,031 nm
- **Estimated flight time**: 21h
- **Heading**: 311° (northwest)
- **Return heading**: 73° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Australia) → United Kingdom
- **Intercontinental**: Oceania → Europe
- **Time difference**: -8.5h (When it's 06:21 in Adelaide, it's 21:51 in St. Mary's)
- **Elevation difference**: 96 ft (ISC is higher than ADL)

## Airports

### [Adelaide International Airport (ADL)](https://www.flightduration.online/airport/adl-adelaide-adelaide-international-airport/1ef266e0-1682-610e-a772-06bb2780ed98)

- City: Adelaide, Australia
- ICAO: YPAD
- Timezone: Australia/Adelaide
- Coordinates: -34.950000, 138.530000
- Elevation: 20 ft

### [St. Mary's Airport (ISC)](https://www.flightduration.online/airport/isc-st-marys-st-marys-airport/1ef266de-c3dc-66c6-857e-06bb2780ed98)

- City: St. Mary's, United Kingdom
- ICAO: EGHE
- Timezone: Europe/London
- Coordinates: 49.910000, -6.290000
- Elevation: 116 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 06:21 in Adelaide, it's 21:51 in St. Mary's.
With a 8.5-hour time difference, expect significant jet lag.

## Related

- [Adelaide International Airport (ADL)](https://www.flightduration.online/airport/adl-adelaide-adelaide-international-airport/1ef266e0-1682-610e-a772-06bb2780ed98)
- [St. Mary's Airport (ISC)](https://www.flightduration.online/airport/isc-st-marys-st-marys-airport/1ef266de-c3dc-66c6-857e-06bb2780ed98)
- [Flight duration calculator](/#calculator)