How far is Seattle from Ontario?
There are several ways to calculate distances between Ontario and Seattle. Here are two common methods:Vincenty's formula (applied above)
- 956.132 miles
- 1538.746 kilometers
- 830.856 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 957.141 miles
- 1540.370 kilometers
- 831.733 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
Estimated flight time from Ontario International Airport (ONT) to Seattle–Tacoma International Airport (SEA) is 2 hours 18 minutes.
Time difference and current local times
There is no time difference between Ontario and Seattle.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 148 kg (326 pounds).
Ontario to Seattle flight map.
Frequent Flyer Miles Calculator
Ontario (ONT) → Seattle (SEA).