| Philadelphia to Isabela (Puerto Rico) | 1,562.70 mi (2,514.92 km) |
| Philadelphia to Iselin (New Jersey) | 57.97 mi (93.29 km) |
| Philadelphia to Isla Vista (California) | 2,465.33 mi (3,967.57 km) |
| Philadelphia to Issaquah (Washington) | 2,359.93 mi (3,797.94 km) |
| Philadelphia to Ithaca (New York) | 182.76 mi (294.12 km) |
| Philadelphia to Ives Estates (Florida) | 1,013.05 mi (1,630.35 km) |
| Philadelphia to Jackson (Michigan) | 506.27 mi (814.76 km) |
| Philadelphia to Jackson (Mississippi) | 992.85 mi (1,597.84 km) |
| Philadelphia to Jackson (Missouri) | 802.73 mi (1,291.86 km) |
| Philadelphia to Jackson (Tennessee) | 804.87 mi (1,295.31 km) |
| Philadelphia to Jackson (Wyoming) | 1,838.78 mi (2,959.24 km) |
| Philadelphia to Jacksonville (Alabama) | 725.58 mi (1,167.70 km) |
| Philadelphia to Jacksonville (Arkansas) | 995.40 mi (1,601.94 km) |
| Philadelphia to Jacksonville (Florida) | 763.24 mi (1,228.31 km) |
| Philadelphia to Jacksonville (Illinois) | 799.92 mi (1,287.34 km) |
