City comparison
San Antonio, TX is about 1,500 miles (2,400 km) from South San Francisco, CA in a straight line. By road, the drive is roughly 1,900 miles, or about 31 hours (about 3 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 San Antonio, TX to South San Francisco, CA takes about 2 h 58 min, covering roughly 1,500 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 Antonio, TX is on Central Time and South San Francisco, CA is on Pacific Time — a 2-hour difference. When it's noon in San Antonio, it's 10 a.m. in South San Francisco, which puts San Antonio 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.
San Antonio has a population of 1,445,662, vs 65,596 in South San Francisco — about 22.0× larger by population. By land area, San Antonio covers about 500 sq mi vs 9.2 sq mi for South San Francisco.
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 | San Antonio | South San Francisco | Difference |
|---|---|---|---|
| Median rent | $1,189/mo | $2,649/mo | 122.8% higher in South San Francisco |
| Median home value | $198,000 | $1,113,000 | 462.1% higher in South San Francisco |
| Median household income | $59,593 | $127,062 | 113.2% higher in South San Francisco |
| Groceries index | 94.2 | 108.1 | 14.7% higher in South San Francisco |
| Utilities index | 83.3 | 168.3 | 102.0% higher in South San Francisco |
| Transportation index | 96.6 | 106.1 | 9.8% higher in South San Francisco |
| Healthcare index | 96.1 | 106.0 | 10.3% higher in South San Francisco |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in San Antonio, you'd need $159,471 in South San Francisco to maintain your standard of living.
Climate, safety, and demographics side by side.
San Antonio, TX is about 37.3% cheaper overall than South San Francisco, CA, based on our cost-of-living index. Housing costs are roughly 107% higher in South San Francisco than in San Antonio. If you earn $80,000 in San Antonio, you'd need about $127,577 in South San Francisco to keep the same standard of living.