City comparison
Idaho Falls, ID is about 1,900 miles (3,100 km) from Philadelphia, PA in a straight line. By road, the drive is roughly 2,400 miles, or about 40 hours (about 4 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 Idaho Falls, ID to Philadelphia, PA takes about 3 h 48 min, covering roughly 1,900 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.
Idaho Falls, ID is on Mountain Time and Philadelphia, PA is on Eastern Time — a 2-hour difference. When it's noon in Idaho Falls, it's 2 p.m. in Philadelphia, which puts Idaho Falls 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.
Philadelphia has a population of 1,593,208, vs 65,685 in Idaho Falls — about 24.3× larger by population. By land area, Philadelphia covers about 135 sq mi vs 27 sq mi for Idaho Falls.
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 | Idaho Falls | Philadelphia | Difference |
|---|---|---|---|
| Median rent | $931/mo | $1,250/mo | 34.3% higher in Philadelphia |
| Median home value | $266,800 | $215,500 | 23.8% higher in Idaho Falls |
| Median household income | $66,463 | $57,537 | 15.5% higher in Idaho Falls |
| Groceries index | 96.9 | 97.0 | ≈ equal (Philadelphia slightly higher) |
| Utilities index | 74.6 | 112.3 | 50.5% higher in Philadelphia |
| Transportation index | 99.5 | 101.7 | 2.3% higher in Philadelphia |
| Healthcare index | 99.4 | 102.7 | 3.2% higher in Philadelphia |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Idaho Falls, you'd need $118,251 in Philadelphia to maintain your standard of living.
Climate, safety, and demographics side by side.
Idaho Falls, ID is about 15.4% cheaper overall than Philadelphia, PA, based on our cost-of-living index. Housing costs are roughly 35% higher in Philadelphia than in Idaho Falls. If you earn $80,000 in Idaho Falls, you'd need about $94,600 in Philadelphia to keep the same standard of living.