# Distance from Great Falls (GTF) to Perth (PER)

> 15,693 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 15,693 km / 9,751 mi / 8,473 nm
- **Estimated flight time**: 19h
- **Heading**: 276° (west)
- **Return heading**: 52° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Australia
- **Intercontinental**: North America → Oceania
- **Time difference**: +14h (When it's 12:18 in Great Falls, it's 02:18 in Perth)
- **Elevation difference**: 3,613 ft (PER is lower than GTF)

## Airports

### [Great Falls International Airport (GTF)](https://www.flightduration.online/airport/gtf-great-falls-great-falls-international-airport/1ef266df-1f14-6d90-96b1-06bb2780ed98)

- City: Great Falls, United States
- ICAO: KGTF
- Timezone: America/Denver
- Coordinates: 47.480000, -111.370000
- Elevation: 3,680 ft

### [Perth International Airport (PER)](https://www.flightduration.online/airport/per-perth-perth-international-airport/1ef266e0-1765-627e-aa2d-06bb2780ed98)

- City: Perth, Australia
- ICAO: YPPH
- Timezone: Australia/Perth
- Coordinates: -31.940000, 115.970000
- Elevation: 67 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 12:18 in Great Falls, it's 02:18 in Perth.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Great Falls International Airport (GTF)](https://www.flightduration.online/airport/gtf-great-falls-great-falls-international-airport/1ef266df-1f14-6d90-96b1-06bb2780ed98)
- [Perth International Airport (PER)](https://www.flightduration.online/airport/per-perth-perth-international-airport/1ef266e0-1765-627e-aa2d-06bb2780ed98)
- [Flight duration calculator](/#calculator)