City comparison
Cambridge, MA is about 2,600 miles (4,100 km) from San Diego, CA in a straight line. By road, the drive is roughly 3,200 miles, or about 54 hours (about 5 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 Cambridge, MA to San Diego, CA takes about 5 h 9 min, covering roughly 2,600 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.
Cambridge, MA is on Eastern Time and San Diego, CA is on Pacific Time — a 3-hour difference. When it's noon in Cambridge, it's 9 a.m. in San Diego, which puts Cambridge 3 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 Diego has a population of 1,383,987, vs 117,962 in Cambridge — about 11.7× larger by population. By land area, San Diego covers about 325 sq mi vs 6.4 sq mi for Cambridge.
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 | Cambridge | San Diego | Difference |
|---|---|---|---|
| Median rent | $2,628/mo | $2,080/mo | 26.3% higher in Cambridge |
| Median home value | $997,600 | $783,300 | 27.4% higher in Cambridge |
| Median household income | $121,539 | $98,657 | 23.2% higher in Cambridge |
| Groceries index | 100.1 | 107.6 | 7.5% higher in San Diego |
| Utilities index | 147.4 | 169.8 | 15.2% higher in San Diego |
| Transportation index | 102.2 | 100.0 | 2.2% higher in Cambridge |
| Healthcare index | 106.4 | 100.0 | 6.4% higher in Cambridge |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Cambridge, you'd need $109,646 in San Diego to maintain your standard of living.
Climate, safety, and demographics side by side.
Cambridge, MA is about 8.8% cheaper overall than San Diego, CA, based on our cost-of-living index. Housing costs are roughly 16% higher in San Diego than in Cambridge. If you earn $80,000 in Cambridge, you'd need about $87,717 in San Diego to keep the same standard of living.