| Chicago to Norwich | 3,968.88 mi (6,387.30 km) |
| Chicago to Nottingham | 3,867.78 mi (6,224.60 km) |
| Chicago to Nuneaton | 3,868.99 mi (6,226.54 km) |
| Chicago to Oadby | 3,881.41 mi (6,246.53 km) |
| Chicago to Oakengates | 3,826.70 mi (6,158.48 km) |
| Chicago to Oakham | 3,892.06 mi (6,263.67 km) |
| Chicago to Oldbury | 3,848.85 mi (6,194.13 km) |
| Chicago to Oldham | 3,814.05 mi (6,138.12 km) |
| Chicago to Ollerton | 3,865.11 mi (6,220.29 km) |
| Chicago to Olton | 3,858.84 mi (6,210.20 km) |
| Chicago to Omagh | 3,592.87 mi (5,782.17 km) |
| Chicago to Ormesby | 3,818.80 mi (6,145.76 km) |
| Chicago to Ormskirk | 3,784.76 mi (6,090.98 km) |
| Chicago to Orpington | 3,964.53 mi (6,380.29 km) |
| Chicago to Ossett | 3,829.92 mi (6,163.66 km) |
