| Ontario to Isabela (Puerto Rico) | 3,276.69 mi (5,273.32 km) |
| Ontario to Iselin (New Jersey) | 2,396.89 mi (3,857.42 km) |
| Ontario to Isla Vista (California) | 131.38 mi (211.44 km) |
| Ontario to Issaquah (Washington) | 961.13 mi (1,546.79 km) |
| Ontario to Ithaca (New York) | 2,281.00 mi (3,670.92 km) |
| Ontario to Ives Estates (Florida) | 2,294.13 mi (3,692.05 km) |
| Ontario to Jackson (Michigan) | 1,877.62 mi (3,021.74 km) |
| Ontario to Jackson (Mississippi) | 1,583.94 mi (2,549.10 km) |
| Ontario to Jackson (Missouri) | 1,579.32 mi (2,541.67 km) |
| Ontario to Jackson (Tennessee) | 1,629.43 mi (2,622.31 km) |
| Ontario to Jackson (Wyoming) | 747.86 mi (1,203.57 km) |
| Ontario to Jacksonville (Alabama) | 1,818.73 mi (2,926.96 km) |
| Ontario to Jacksonville (Arkansas) | 1,448.60 mi (2,331.29 km) |
| Ontario to Jacksonville (Florida) | 2,105.90 mi (3,389.11 km) |
| Ontario to Jacksonville (Illinois) | 1,556.38 mi (2,504.74 km) |
