# Distance from Challis (CHL) to Sydney (SYD)

> 12,903 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,903 km / 8,018 mi / 6,967 nm
- **Estimated flight time**: 16h
- **Heading**: 247° (west southwest)
- **Return heading**: 52° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Australia
- **Intercontinental**: North America → Oceania
- **Time difference**: +16h (When it's 16:27 in Challis, it's 08:27 in Sydney)
- **Elevation difference**: 5,055 ft (SYD is lower than CHL)

## Airports

### [Challis Airport (CHL)](https://www.flightduration.online/airport/chl-challis-challis-airport/1ef266df-27a4-6eb0-8be0-06bb2780ed98)

- City: Challis, United States
- ICAO: KLLJ
- Timezone: America/Boise
- Coordinates: 44.520000, -114.220000
- Elevation: 5,076 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 16:27 in Challis, it's 08:27 in Sydney.
With a 16-hour time difference, expect significant jet lag.

## Related

- [Challis Airport (CHL)](https://www.flightduration.online/airport/chl-challis-challis-airport/1ef266df-27a4-6eb0-8be0-06bb2780ed98)
- [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)