| Houston to Indianola (Iowa) | 806.37 mi (1,297.72 km) |
| Houston to Indio (California) | 1,252.32 mi (2,015.41 km) |
| Houston to Inglewood (California) | 1,374.34 mi (2,211.78 km) |
| Houston to Inkster (Michigan) | 1,093.87 mi (1,760.42 km) |
| Houston to Inver Grove Heights (Minnesota) | 1,046.80 mi (1,684.67 km) |
| Houston to Inwood (New York) | 1,426.80 mi (2,296.22 km) |
| Houston to Iona (Florida) | 848.08 mi (1,364.86 km) |
| Houston to Ionia (Michigan) | 1,075.10 mi (1,730.20 km) |
| Houston to Iowa City (Iowa) | 847.95 mi (1,364.64 km) |
| Houston to Irmo (South Carolina) | 882.98 mi (1,421.02 km) |
| Houston to Irondale (Alabama) | 574.90 mi (925.22 km) |
| Houston to Ironton (Ohio) | 943.49 mi (1,518.39 km) |
| Houston to Irvine (California) | 1,339.85 mi (2,156.28 km) |
| Houston to Irving (Texas) | 231.89 mi (373.19 km) |
| Houston to Isabela (Puerto Rico) | 1,943.98 mi (3,128.54 km) |
