| Portales to Ickenham | 4,907.73 mi (7,898.24 km) |
| Portales to Ifield | 4,932.34 mi (7,937.84 km) |
| Portales to Ilford | 4,927.28 mi (7,929.70 km) |
| Portales to Ilfracombe | 4,783.27 mi (7,697.93 km) |
| Portales to Ilkeston | 4,826.28 mi (7,767.14 km) |
| Portales to Ilkley | 4,774.92 mi (7,684.49 km) |
| Portales to Immingham | 4,842.28 mi (7,792.89 km) |
| Portales to Ince-in-Makerfield | 4,760.44 mi (7,661.19 km) |
| Portales to Inverness | 4,576.12 mi (7,364.56 km) |
| Portales to Inverurie | 4,643.37 mi (7,472.78 km) |
| Portales to Ipswich | 4,947.53 mi (7,962.29 km) |
| Portales to Irlam | 4,770.01 mi (7,676.60 km) |
| Portales to Irthlingborough | 4,874.20 mi (7,844.26 km) |
| Portales to Irvine | 4,619.59 mi (7,434.52 km) |
| Portales to Islington | 4,920.89 mi (7,919.41 km) |
