| Omaha to Oswego (Illinois) | 400.36 mi (644.31 km) |
| Omaha to Oswego (New York) | 1,007.28 mi (1,621.07 km) |
| Omaha to Otsego (Minnesota) | 302.44 mi (486.72 km) |
| Omaha to Ottawa (Illinois) | 375.02 mi (603.53 km) |
| Omaha to Ottawa (Kansas) | 188.69 mi (303.67 km) |
| Omaha to Ottumwa (Iowa) | 189.84 mi (305.51 km) |
| Omaha to Overland (Missouri) | 349.17 mi (561.94 km) |
| Omaha to Overland Park (Kansas) | 179.32 mi (288.59 km) |
| Omaha to Overlea (Maryland) | 1,035.31 mi (1,666.18 km) |
| Omaha to Oviedo (Florida) | 1,207.75 mi (1,943.69 km) |
| Omaha to Owasso (Oklahoma) | 343.94 mi (553.52 km) |
| Omaha to Owatonna (Minnesota) | 242.32 mi (389.98 km) |
| Omaha to Owensboro (Kentucky) | 533.99 mi (859.37 km) |
| Omaha to Owings Mills (Maryland) | 1,020.33 mi (1,642.07 km) |
| Omaha to Owosso (Michigan) | 619.70 mi (997.31 km) |
