# Distance from Allentown (ABE) to Sydney (SYD)

> 15,874 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 15,874 km / 9,864 mi / 8,571 nm
- **Estimated flight time**: 20h
- **Heading**: 265° (west)
- **Return heading**: 66° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Australia
- **Intercontinental**: North America → Oceania
- **Time difference**: +14h (When it's 04:51 in Allentown, it's 18:51 in Sydney)
- **Elevation difference**: 373 ft (SYD is lower than ABE)

## Airports

### [Lehigh Valley International Airport (ABE)](https://www.flightduration.online/airport/abe-allentown-lehigh-valley-international-airport/1ef266df-0d08-698a-8b19-06bb2780ed98)

- City: Allentown, United States
- ICAO: KABE
- Timezone: America/New_York
- Coordinates: 40.650000, -75.440000
- Elevation: 394 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 04:51 in Allentown, it's 18:51 in Sydney.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Lehigh Valley International Airport (ABE)](https://www.flightduration.online/airport/abe-allentown-lehigh-valley-international-airport/1ef266df-0d08-698a-8b19-06bb2780ed98)
- [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)