| Williamsport to Isabela (Puerto Rico) | 1,679.03 mi (2,702.13 km) |
| Williamsport to Iselin (New Jersey) | 149.38 mi (240.40 km) |
| Williamsport to Isla Vista (California) | 2,359.70 mi (3,797.56 km) |
| Williamsport to Issaquah (Washington) | 2,232.02 mi (3,592.09 km) |
| Williamsport to Ithaca (New York) | 87.63 mi (141.02 km) |
| Williamsport to Ives Estates (Florida) | 1,070.72 mi (1,723.16 km) |
| Williamsport to Jackson (Michigan) | 385.93 mi (621.10 km) |
| Williamsport to Jackson (Mississippi) | 952.96 mi (1,533.64 km) |
| Williamsport to Jackson (Missouri) | 724.38 mi (1,165.77 km) |
| Williamsport to Jackson (Tennessee) | 745.04 mi (1,199.03 km) |
| Williamsport to Jackson (Wyoming) | 1,717.64 mi (2,764.28 km) |
| Williamsport to Jacksonville (Alabama) | 700.55 mi (1,127.42 km) |
| Williamsport to Jacksonville (Arkansas) | 929.41 mi (1,495.75 km) |
| Williamsport to Jacksonville (Florida) | 796.88 mi (1,282.46 km) |
| Williamsport to Jacksonville (Illinois) | 700.50 mi (1,127.35 km) |
