City comparison
Longmont, CO is about 850 miles (1,300 km) from San Antonio, TX in a straight line. By road, the drive is roughly 1,000 miles, or about 17 hours 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 Longmont, CO to San Antonio, TX takes about 1 h 39 min, covering roughly 850 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.
Longmont, CO is on Mountain Time and San Antonio, TX is on Central Time — a 1-hour difference. When it's noon in Longmont, it's 1 p.m. in San Antonio, which puts Longmont 1 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 98,282 in Longmont — about 14.7× larger by population. By land area, San Antonio covers about 500 sq mi vs 29 sq mi for Longmont.
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 | Longmont | San Antonio | Difference |
|---|---|---|---|
| Median rent | $1,689/mo | $1,189/mo | 42.1% higher in Longmont |
| Median home value | $488,100 | $198,000 | 146.5% higher in Longmont |
| Median household income | $89,720 | $59,593 | 50.6% higher in Longmont |
| Groceries index | 96.8 | 94.2 | 2.7% higher in Longmont |
| Utilities index | 86.5 | 83.3 | 3.9% higher in Longmont |
| Transportation index | 100.3 | 96.6 | 3.7% higher in Longmont |
| Healthcare index | 100.2 | 96.1 | 4.3% higher in Longmont |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Longmont, you'd need $77,400 in San Antonio to maintain your standard of living.
Climate, safety, and demographics side by side.
San Antonio, TX is about 22.6% cheaper overall than Longmont, CO, based on our cost-of-living index. Housing costs are roughly 64% higher in Longmont than in San Antonio. If you earn $80,000 in Longmont, you'd need about $61,920 in San Antonio to keep the same standard of living.