| Omaha to Opole | 4,943.82 mi (7,956.31 km) |
| Omaha to Orzesze | 4,994.49 mi (8,037.85 km) |
| Omaha to Osowa | 4,782.02 mi (7,695.91 km) |
| Omaha to Ostroda | 4,860.59 mi (7,822.37 km) |
| Omaha to Ostroleka | 4,938.22 mi (7,947.29 km) |
| Omaha to Ostrow Mazowiecka | 4,961.09 mi (7,984.10 km) |
| Omaha to Ostrow Wielkopolski | 4,893.44 mi (7,875.23 km) |
| Omaha to Ostrowiec Swietokrzyski | 5,038.51 mi (8,108.69 km) |
| Omaha to Ostrzeszow | 4,908.13 mi (7,898.87 km) |
| Omaha to Oswiecim | 5,014.82 mi (8,070.58 km) |
| Omaha to Otwock | 4,976.10 mi (8,008.26 km) |
| Omaha to Ozarow Mazowiecki | 4,957.27 mi (7,977.95 km) |
| Omaha to Ozimek | 4,952.37 mi (7,970.07 km) |
| Omaha to Ozorkow | 4,923.57 mi (7,923.72 km) |
| Omaha to Pabianice | 4,941.89 mi (7,953.21 km) |
