# Distance from Ontario (ONT) to Seattle (SEA)

> 1,540 km · estimated flight time 3h · Medium-haul route.

## Summary

- **Distance**: 1,540 km / 957 mi / 832 nm
- **Estimated flight time**: 3h
- **Heading**: 347° (north northwest)
- **Return heading**: 163° (south southeast)
- **Classification**: Medium-haul
- **Type**: Domestic (United States)
- **Time difference**: +0h (When it's 13:11 in Ontario, it's 13:11 in Seattle)
- **Elevation difference**: 512 ft (SEA is lower than ONT)

## Airports

### [Ontario International Airport (ONT)](https://www.flightduration.online/airport/ont-ontario-ontario-international-airport/1ef266df-30d9-6922-9430-06bb2780ed98)

- City: Ontario, United States
- ICAO: KONT
- Timezone: America/Los_Angeles
- Coordinates: 34.060000, -117.600000
- Elevation: 944 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 a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

## Related

- [Ontario International Airport (ONT)](https://www.flightduration.online/airport/ont-ontario-ontario-international-airport/1ef266df-30d9-6922-9430-06bb2780ed98)
- [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)