| Luxembourg to Olympia Heights (Florida) | 4,732.78 mi (7,616.67 km) |
| Luxembourg to Omaha (Nebraska) | 4,591.34 mi (7,389.05 km) |
| Luxembourg to On Top of the World Designated Place (Florida) | 4,649.06 mi (7,481.94 km) |
| Luxembourg to Onalaska (Wisconsin) | 4,288.69 mi (6,901.99 km) |
| Luxembourg to Oneida (New York) | 3,731.16 mi (6,004.73 km) |
| Luxembourg to Oneonta (New York) | 3,733.47 mi (6,008.44 km) |
| Luxembourg to Ontario (California) | 5,709.73 mi (9,188.92 km) |
| Luxembourg to Ontario (Oregon) | 5,116.09 mi (8,233.55 km) |
| Luxembourg to Opa-locka (Florida) | 4,720.43 mi (7,596.81 km) |
| Luxembourg to Opelika (Alabama) | 4,603.60 mi (7,408.78 km) |
| Luxembourg to Opelousas (Louisiana) | 4,982.59 mi (8,018.70 km) |
| Luxembourg to Orange (California) | 5,730.10 mi (9,221.70 km) |
| Luxembourg to Orange (Texas) | 5,070.33 mi (8,159.92 km) |
| Luxembourg to Orange City (Florida) | 4,615.04 mi (7,427.19 km) |
| Luxembourg to Orangeburg (South Carolina) | 4,376.77 mi (7,043.73 km) |
