# Distance from St. Mary's (ISC) to Sydney (SYD)

> 17,461 km · estimated flight time 22h · Ultra-long-haul route.

## Summary

- **Distance**: 17,461 km / 10,849 mi / 9,428 nm
- **Estimated flight time**: 22h
- **Heading**: 55° (northeast)
- **Return heading**: 321° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United Kingdom) → Australia
- **Intercontinental**: Europe → Oceania
- **Time difference**: +9h (When it's 18:20 in St. Mary's, it's 03:20 in Sydney)
- **Elevation difference**: 95 ft (SYD is lower than ISC)

## Airports

### [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

### [Sydney Kingsford Smith International Airport (SYD)](https://www.flightduration.online/airport/syd-sydney-sydney-kingsford-smith-international-airport/1ef266e0-1982-6f84-a5a1-06bb2780ed98)

- City: Sydney, Australia
- ICAO: YSSY
- Timezone: Australia/Sydney
- Coordinates: -33.950000, 151.180000
- Elevation: 21 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 18:20 in St. Mary's, it's 03:20 in Sydney.
With a 9-hour time difference, expect significant jet lag.

## Related

- [St. Mary's Airport (ISC)](https://www.flightduration.online/airport/isc-st-marys-st-marys-airport/1ef266de-c3dc-66c6-857e-06bb2780ed98)
- [Sydney Kingsford Smith International Airport (SYD)](https://www.flightduration.online/airport/syd-sydney-sydney-kingsford-smith-international-airport/1ef266e0-1982-6f84-a5a1-06bb2780ed98)
- [Flight duration calculator](/#calculator)