How far is Seattle, WA, from Ontario, CA?
The distance between Ontario (Ontario International Airport) and Seattle (Seattle–Tacoma International Airport) is 956 miles / 1539 kilometers / 831 nautical miles.
The driving distance from Ontario (ONT) to Seattle (SEA) is 1161 miles / 1868 kilometers, and travel time by car is about 21 hours 59 minutes.
Ontario International Airport – Seattle–Tacoma International Airport
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Distance from Ontario to Seattle
There are several ways to calculate the distance from Ontario to Seattle. Here are two standard 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 planet.
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).
How long does it take to fly from Ontario to Seattle?
The estimated flight time from Ontario International Airport to Seattle–Tacoma International Airport is 2 hours and 18 minutes.
What is the time difference between Ontario and Seattle?
Flight carbon footprint between Ontario International Airport (ONT) and Seattle–Tacoma International Airport (SEA)
On average, flying from Ontario to Seattle generates about 148 kg of CO2 per passenger, and 148 kilograms equals 326 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Ontario to Seattle
See the map of the shortest flight path between Ontario International Airport (ONT) and Seattle–Tacoma International Airport (SEA).
Airport information
| Origin | Ontario International Airport |
|---|---|
| City: | Ontario, CA |
| Country: | United States  |
| IATA Code: | ONT |
| ICAO Code: | KONT |
| Coordinates: | 34°3′21″N, 117°36′3″W |
| Destination | Seattle–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |
Airlines flying from Ontario (ONT) to Seattle (SEA)
| Alaska Airlines |
| American Airlines |