Distance from Ontario to San Diego County
The distance between Ontario, United States and San Diego County, United States is 141 km (88 miles) in a straight line. If a road route exists, expect roughly 176 km (109 miles) by car — around 2 h 12 min of driving.
| Measure | Value |
|---|---|
| Straight-line distance | 141 km / 88 mi |
| Road distance (estimate) | ≈ 176 km / 109 mi |
| Driving time (estimate) | ≈ 2 h 12 min |
| Flight time (estimate) | ≈ 40 min |
Road distance and travel times are estimates based on the straight-line distance (road factor 1.25, average speed 80 km/h) — actual routes vary.
| Place | Latitude | Longitude |
|---|---|---|
| Ontario, United States | 34.0633521 | -117.652398 |
| San Diego County, United States | 33.02820215874 | -116.77021346676 |
Frequently asked questions
How far is San Diego County from Ontario?
The straight-line (air) distance from Ontario, United States to San Diego County, United States is 141 km (88 miles). By road it is roughly 176 km (109 miles), depending on the route.
How long does it take to drive from Ontario to San Diego County?
Approximately 2 h 12 min, assuming an 80 km/h average over an estimated road distance of 176 km. Actual time depends on the route, traffic and border crossings.
How long is the flight from Ontario to San Diego County?
A direct flight covers 141 km in about 40 min at typical cruise speed, plus airport time. Not all city pairs have direct flights.
How do I calculate distances for a whole list of locations?
Upload a CSV or Excel spreadsheet to the batch distance calculator — it computes the distance for every origin–destination row at once. The first records are free to try.
Related distances
Distance from San Diego County to Ontario (reverse route)
GPS coordinates of Ontario GPS coordinates of San Diego County