| Omaha to Nasaud | 5,315.69 mi (8,554.78 km) |
| Omaha to Navodari | 5,602.72 mi (9,016.71 km) |
| Omaha to Negresti-Oas | 5,254.95 mi (8,457.03 km) |
| Omaha to Nehoiu | 5,475.77 mi (8,812.40 km) |
| Omaha to Ocna Mures | 5,344.49 mi (8,601.12 km) |
| Omaha to Odobesti | 5,477.61 mi (8,815.36 km) |
| Omaha to Odorheiu Secuiesc | 5,393.94 mi (8,680.71 km) |
| Omaha to Oltenita | 5,553.20 mi (8,937.01 km) |
| Omaha to Onesti | 5,442.39 mi (8,758.69 km) |
| Omaha to Oradea | 5,247.68 mi (8,445.33 km) |
| Omaha to Orastie | 5,351.02 mi (8,611.63 km) |
| Omaha to Oravita | 5,342.49 mi (8,597.91 km) |
| Omaha to Orsova | 5,382.09 mi (8,661.64 km) |
| Omaha to Otelu Rosu | 5,340.32 mi (8,594.41 km) |
| Omaha to Otopeni | 5,510.67 mi (8,868.57 km) |
