| Philadelphia to Ickenham | 3,523.80 mi (5,671.01 km) |
| Philadelphia to Ifield | 3,543.12 mi (5,702.10 km) |
| Philadelphia to Ilford | 3,545.60 mi (5,706.10 km) |
| Philadelphia to Ilfracombe | 3,379.56 mi (5,438.87 km) |
| Philadelphia to Ilkeston | 3,460.08 mi (5,568.47 km) |
| Philadelphia to Ilkley | 3,421.76 mi (5,506.79 km) |
| Philadelphia to Immingham | 3,490.63 mi (5,617.63 km) |
| Philadelphia to Ince-in-Makerfield | 3,398.09 mi (5,468.69 km) |
| Philadelphia to Inverness | 3,275.65 mi (5,271.64 km) |
| Philadelphia to Inverurie | 3,345.70 mi (5,384.38 km) |
| Philadelphia to Ipswich | 3,577.88 mi (5,758.05 km) |
| Philadelphia to Irlam | 3,406.83 mi (5,482.76 km) |
| Philadelphia to Irthlingborough | 3,500.96 mi (5,634.25 km) |
| Philadelphia to Irvine | 3,284.25 mi (5,285.49 km) |
| Philadelphia to Islington | 3,538.21 mi (5,694.20 km) |
