Distance between Seattle, WA (SEA) and Ontario, CA (ONT)
Distance from Seattle–Tacoma International Airport to Ontario International Airport is 956 miles / 1539 kilometers / 831 nautical miles.
Calculations with different 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).
Flight duration
Estimated flight time from Seattle–Tacoma International Airport (SEA) to Ontario International Airport (ONT) is 2 hours 18 minutes.
Time difference and current local times
There is no time difference between Seattle and Ontario.
Time Difference
Seattle
Ontario
Seattle, WA
PST
Ontario, CA
PST
Airport information
| A | 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 |
| B | Ontario International Airport |
|---|---|
| City: | Ontario, CA |
| Country: | United States |
| IATA Code: | ONT |
| ICAO Code: | KONT |
| Coordinates: | 34°3′21″N, 117°36′3″W |
Map
Flight map from Seattle to Ontario.
Frequent Flyer Miles Calculator
Seattle (SEA) → Ontario (ONT).
Elite level bonus (%):
Booking class bonus (%):
Air miles:
956
Elite level bonus:
0
Booking class bonus:
0
In total
Total frequent flyer miles:
956
Round trip?