| Prospect Heights to Ickenham | 3,934.55 mi (6,332.04 km) |
| Prospect Heights to Ifield | 3,957.84 mi (6,369.53 km) |
| Prospect Heights to Ilford | 3,954.83 mi (6,364.68 km) |
| Prospect Heights to Ilfracombe | 3,804.21 mi (6,122.28 km) |
| Prospect Heights to Ilkeston | 3,857.61 mi (6,208.22 km) |
| Prospect Heights to Ilkley | 3,809.72 mi (6,131.16 km) |
| Prospect Heights to Immingham | 3,877.98 mi (6,241.01 km) |
| Prospect Heights to Ince-in-Makerfield | 3,792.47 mi (6,103.39 km) |
| Prospect Heights to Inverness | 3,625.75 mi (5,835.08 km) |
| Prospect Heights to Inverurie | 3,694.50 mi (5,945.73 km) |
| Prospect Heights to Ipswich | 3,978.60 mi (6,402.94 km) |
| Prospect Heights to Irlam | 3,801.86 mi (6,118.50 km) |
| Prospect Heights to Irthlingborough | 3,903.81 mi (6,282.57 km) |
| Prospect Heights to Irvine | 3,658.63 mi (5,887.99 km) |
| Prospect Heights to Islington | 3,948.12 mi (6,353.89 km) |
