| Apt to Navodari | 1,148.55 mi (1,848.42 km) |
| Apt to Negresti-Oas | 907.62 mi (1,460.67 km) |
| Apt to Nehoiu | 1,030.49 mi (1,658.41 km) |
| Apt to Ocna Mures | 914.36 mi (1,471.52 km) |
| Apt to Odobesti | 1,066.70 mi (1,716.69 km) |
| Apt to Odorheiu Secuiesc | 982.67 mi (1,581.46 km) |
| Apt to Oltenita | 1,053.17 mi (1,694.91 km) |
| Apt to Onesti | 1,052.57 mi (1,693.95 km) |
| Apt to Oradea | 828.75 mi (1,333.74 km) |
| Apt to Orastie | 880.60 mi (1,417.18 km) |
| Apt to Oravita | 805.94 mi (1,297.04 km) |
| Apt to Orsova | 841.13 mi (1,353.66 km) |
| Apt to Otelu Rosu | 838.88 mi (1,350.05 km) |
| Apt to Otopeni | 1,022.14 mi (1,644.97 km) |
| Apt to Ovidiu | 1,146.35 mi (1,844.87 km) |
