City comparison
Ontario, CA is about 325 miles (550 km) from San Jose, CA in a straight line. By road, the drive is roughly 400 miles, or about 6 h 45 min behind the wheel at highway speeds.
Driving distance is a rough estimate (great-circle × 1.25); driving time assumes a 60 mph blended average. Real trips run 10–20% longer with stops.
A direct flight from Ontario, CA to San Jose, CA takes about 39 min, covering roughly 325 miles in a straight line. Connecting itineraries with a layover typically add 1–3 hours.
Block-to-block estimate at ~500 mph cruise, including taxi, climb, and descent — what an airline would publish, not pure airborne time.
San Jose has a population of 1,001,176, vs 176,326 in Ontario — about 5.7× larger by population. By land area, San Jose covers about 180 sq mi vs 50 sq mi for Ontario.
Population from US Census ACS. Land area from the Census Gazetteer (city proper, excluding inland water).
Cost indices by category, with the US city average (100) marked.
Index: 100 = US city average. Lower is more affordable.
Side-by-side costs, salaries, and sub-category indices.
| Metric | Ontario | San Jose | Difference |
|---|---|---|---|
| Median rent | $1,826/mo | $2,526/mo | 38.3% higher in San Jose |
| Median home value | $513,000 | $1,149,600 | 124.1% higher in San Jose |
| Median household income | $78,070 | $136,010 | 74.2% higher in San Jose |
| Groceries index | 100.5 | 105.1 | 4.5% higher in San Jose |
| Utilities index | 143.3 | 153.8 | 7.3% higher in San Jose |
| Transportation index | 101.1 | 100.7 | ≈ equal (Ontario slightly higher) |
| Healthcare index | 102.0 | 100.6 | 1.3% higher in Ontario |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Ontario, you'd need $130,124 in San Jose to maintain your standard of living.
Climate, safety, and demographics side by side.
Ontario, CA is about 23.2% cheaper overall than San Jose, CA, based on our cost-of-living index. Housing costs are roughly 61% higher in San Jose than in Ontario. If you earn $80,000 in Ontario, you'd need about $104,100 in San Jose to keep the same standard of living.