# Distance from Letterkenny (LTR) to Sydney (SYD)

> 17,163 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 17,163 km / 10,665 mi / 9,268 nm
- **Estimated flight time**: 21h
- **Heading**: 44° (northeast)
- **Return heading**: 331° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Ireland) → Australia
- **Intercontinental**: Europe → Oceania
- **Time difference**: +9h (When it's 17:15 in Letterkenny, it's 02:15 in Sydney)
- **Elevation difference**: 1 ft (SYD is higher than LTR)

## Airports

### [Letterkenny Airport (LTR)](https://www.flightduration.online/airport/ltr-letterkenny-letterkenny-airport/1ef266de-c779-6126-b22e-06bb2780ed98)

- City: Letterkenny, Ireland
- ICAO: EILT
- Timezone: Europe/Dublin
- Coordinates: 54.950000, -7.670000
- Elevation: 20 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 17:15 in Letterkenny, it's 02:15 in Sydney.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Letterkenny Airport (LTR)](https://www.flightduration.online/airport/ltr-letterkenny-letterkenny-airport/1ef266de-c779-6126-b22e-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)