# Distance from Isisford Airport (ISI) to Seattle (SEA)

> 12,203 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 12,203 km / 7,582 mi / 6,589 nm
- **Estimated flight time**: 15h
- **Heading**: 46° (northeast)
- **Return heading**: 255° (west southwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Australia) → United States
- **Intercontinental**: Oceania → North America
- **Time difference**: -17h (When it's 16:22 in Isisford Airport, it's 23:22 in Seattle)
- **Elevation difference**: 262 ft (SEA is lower than ISI)

## Airports

### [Isisford Airport (ISI)](https://www.flightduration.online/airport/isi-isisford-airport/1ef266e0-0ec0-654c-89c9-06bb2780ed98)

- City: Isisford Airport, Australia
- ICAO: YISF
- Timezone: Australia/Brisbane
- Coordinates: -24.260000, 144.430000
- Elevation: 694 ft

### [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)

- City: Seattle, United States
- ICAO: KSEA
- Timezone: America/Los_Angeles
- Coordinates: 47.450000, -122.310000
- Elevation: 432 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 16:22 in Isisford Airport, it's 23:22 in Seattle.
With a 17-hour time difference, expect significant jet lag.

## Related

- [Isisford Airport (ISI)](https://www.flightduration.online/airport/isi-isisford-airport/1ef266e0-0ec0-654c-89c9-06bb2780ed98)
- [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Flight duration calculator](/#calculator)