| Chicago Heights to Hoyo de Manzanares | 4,175.48 mi (6,719.78 km) |
| Chicago Heights to Huelva | 4,156.35 mi (6,688.99 km) |
| Chicago Heights to Huercal de Almeria | 4,379.97 mi (7,048.88 km) |
| Chicago Heights to Huercal-Overa | 4,383.93 mi (7,055.26 km) |
| Chicago Heights to Huesca | 4,274.38 mi (6,878.96 km) |
| Chicago Heights to Huetor Vega | 4,317.54 mi (6,948.42 km) |
| Chicago Heights to Huetor-Tajar | 4,293.67 mi (6,909.99 km) |
| Chicago Heights to Humanes de Madrid | 4,191.57 mi (6,745.68 km) |
| Chicago Heights to Ibi | 4,398.31 mi (7,078.39 km) |
| Chicago Heights to Ibiza | 4,477.38 mi (7,205.65 km) |
| Chicago Heights to Icod de los Vinos | 4,007.12 mi (6,448.84 km) |
| Chicago Heights to Igualada | 4,383.27 mi (7,054.19 km) |
| Chicago Heights to Illescas | 4,196.26 mi (6,753.23 km) |
| Chicago Heights to Inca | 4,511.43 mi (7,260.44 km) |
| Chicago Heights to Ingenio | 4,087.82 mi (6,578.72 km) |
