City comparison
Chicago, IL is about 1,700 miles (2,700 km) from Ontario, CA in a straight line. By road, the drive is roughly 2,100 miles, or about 36 hours (about 4 days at 10 h/day) 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 Chicago, IL to Ontario, CA takes about 3 h 25 min, covering roughly 1,700 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.
Chicago, IL is on Central Time and Ontario, CA is on Pacific Time — a 2-hour difference. When it's noon in Chicago, it's 10 a.m. in Ontario, which puts Chicago 2 hours ahead.
Standard-time offsets. Daylight saving applies in both cities for most of the year (exceptions: Hawaii and most of Arizona), and the gap between the two stays the same.
Chicago has a population of 2,721,914, vs 176,326 in Ontario — about 15.4× larger by population. By land area, Chicago covers about 230 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 | Chicago | Ontario | Difference |
|---|---|---|---|
| Median rent | $1,314/mo | $1,826/mo | 39.0% higher in Ontario |
| Median home value | $304,500 | $513,000 | 68.5% higher in Ontario |
| Median household income | $71,673 | $78,070 | 8.9% higher in Ontario |
| Groceries index | 106.4 | 100.5 | 5.8% higher in Chicago |
| Utilities index | 84.4 | 143.3 | 69.9% higher in Ontario |
| Transportation index | 100.3 | 101.1 | 0.8% higher in Ontario |
| Healthcare index | 100.2 | 102.0 | 1.7% 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 Chicago, you'd need $112,315 in Ontario to maintain your standard of living.
Climate, safety, and demographics side by side.
Chicago, IL is about 11% cheaper overall than Ontario, CA, based on our cost-of-living index. Housing costs are roughly 17% higher in Ontario than in Chicago. If you earn $80,000 in Chicago, you'd need about $89,852 in Ontario to keep the same standard of living.