| Flagstaff to Idar-Oberstein | 5,486.24 mi (8,829.25 km) |
| Flagstaff to Idstein | 5,492.91 mi (8,839.98 km) |
| Flagstaff to Illertissen | 5,648.27 mi (9,090.02 km) |
| Flagstaff to Illingen | 5,493.59 mi (8,841.07 km) |
| Flagstaff to Ilmenau | 5,552.97 mi (8,936.63 km) |
| Flagstaff to Ilsede | 5,452.94 mi (8,775.66 km) |
| Flagstaff to Ilsenburg | 5,487.51 mi (8,831.30 km) |
| Flagstaff to Ilsfeld | 5,580.65 mi (8,981.18 km) |
| Flagstaff to Ilvesheim | 5,538.24 mi (8,912.93 km) |
| Flagstaff to Immenstadt im Allgau | 5,684.61 mi (9,148.50 km) |
| Flagstaff to Ingelheim | 5,497.71 mi (8,847.71 km) |
| Flagstaff to Ingolstadt | 5,664.05 mi (9,115.41 km) |
| Flagstaff to Iserlohn | 5,418.29 mi (8,719.90 km) |
| Flagstaff to Isernhagen-Sud | 5,435.02 mi (8,746.82 km) |
| Flagstaff to Ismaning | 5,698.70 mi (9,171.17 km) |
