City comparison
Hilo, HI is about 3,600 miles (5,800 km) from San Antonio, TX in a straight line. By road, the drive is roughly 4,500 miles, or about 75 hours (about 8 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 Antonio, TX takes about 7 h 10 min, covering roughly 3,600 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.
Hilo, HI is on Hawaii–Aleutian Time and San Antonio, TX is on Central Time — a 4-hour difference. When it's noon in Hilo, it's 4 p.m. in San Antonio, which puts Hilo 4 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 Antonio has a population of 1,445,662, vs 47,627 in Hilo — about 30.4× larger by population. By land area, San Antonio covers about 500 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 Antonio | Difference |
|---|---|---|---|
| Median rent | $1,228/mo | $1,189/mo | 3.3% higher in Hilo |
| Median home value | $417,600 | $198,000 | 110.9% higher in Hilo |
| Median household income | $75,589 | $59,593 | 26.8% higher in Hilo |
| Groceries index | 104.1 | 94.2 | 10.5% higher in Hilo |
| Utilities index | 125.1 | 83.3 | 50.1% higher in Hilo |
| Transportation index | 104.6 | 96.6 | 8.3% higher in Hilo |
| Healthcare index | 104.1 | 96.1 | 8.3% 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 $97,140 in San Antonio to maintain your standard of living.
Climate, safety, and demographics side by side.
San Antonio, TX is about 2.9% cheaper overall than Hilo, HI, based on our cost-of-living index. Housing costs are roughly 2% higher in Hilo than in San Antonio. If you earn $80,000 in Hilo, you'd need about $77,712 in San Antonio to keep the same standard of living.