City comparison
Port Arthur, TX is about 275 miles (450 km) from San Antonio, TX in a straight line. By road, the drive is roughly 350 miles, or about 5 h 45 min 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 Port Arthur, TX to San Antonio, TX takes about 34 min, covering roughly 275 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 has a population of 1,445,662, vs 55,897 in Port Arthur — about 25.9× larger by population. By land area, San Antonio covers about 500 sq mi vs 76 sq mi for Port Arthur.
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 | Port Arthur | San Antonio | Difference |
|---|---|---|---|
| Median rent | $938/mo | $1,189/mo | 26.8% higher in San Antonio |
| Median home value | $91,500 | $198,000 | 116.4% higher in San Antonio |
| Median household income | $45,357 | $59,593 | 31.4% higher in San Antonio |
| Groceries index | 94.2 | 94.2 | ≈ equal |
| Utilities index | 84.2 | 83.3 | 1.0% higher in Port Arthur |
| Transportation index | 96.6 | 96.6 | ≈ equal |
| Healthcare index | 96.1 | 96.1 | ≈ equal |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Port Arthur, you'd need $111,601 in San Antonio to maintain your standard of living.
Climate, safety, and demographics side by side.
Port Arthur, TX is about 10.4% cheaper overall than San Antonio, TX, based on our cost-of-living index. Housing costs are roughly 33% higher in San Antonio than in Port Arthur. If you earn $80,000 in Port Arthur, you'd need about $89,281 in San Antonio to keep the same standard of living.