City comparison
Hilo, HI is about 2,500 miles (4,000 km) from San Diego, CA in a straight line. By road, the drive is roughly 3,100 miles, or about 52 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 Hilo, HI to San Diego, CA takes about 5 h, covering roughly 2,500 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.
Hilo, HI is on Hawaii–Aleutian Time and San Diego, CA is on Pacific Time — a 2-hour difference. When it's noon in Hilo, it's 2 p.m. in San Diego, which puts Hilo 2 hours behind.
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 47,627 in Hilo — about 29.1× larger by population. By land area, San Diego covers about 325 sq mi vs 54 sq mi for Hilo.
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 | Hilo | San Diego | Difference |
|---|---|---|---|
| Median rent | $1,228/mo | $2,080/mo | 69.4% higher in San Diego |
| Median home value | $417,600 | $783,300 | 87.6% higher in San Diego |
| Median household income | $75,589 | $98,657 | 30.5% higher in San Diego |
| Groceries index | 104.1 | 107.6 | 3.4% higher in San Diego |
| Utilities index | 125.1 | 169.8 | 35.8% higher in San Diego |
| Transportation index | 104.6 | 100.0 | 4.6% higher in Hilo |
| Healthcare index | 104.1 | 100.0 | 4.1% higher in Hilo |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Hilo, you'd need $145,070 in San Diego to maintain your standard of living.
Climate, safety, and demographics side by side.
Hilo, HI is about 31.1% cheaper overall than San Diego, CA, based on our cost-of-living index. Housing costs are roughly 84% higher in San Diego than in Hilo. If you earn $80,000 in Hilo, you'd need about $116,056 in San Diego to keep the same standard of living.