| Houston to Oschatz | 5,358.35 mi (8,623.43 km) |
| Houston to Oschersleben | 5,264.62 mi (8,472.58 km) |
| Houston to Osnabruck | 5,137.87 mi (8,268.60 km) |
| Houston to Ostbevern | 5,138.39 mi (8,269.44 km) |
| Houston to Osterburg | 5,255.81 mi (8,458.40 km) |
| Houston to Ostercappeln | 5,142.43 mi (8,275.94 km) |
| Houston to Osterhofen | 5,452.23 mi (8,774.52 km) |
| Houston to Osterholz-Scharmbeck | 5,134.13 mi (8,262.59 km) |
| Houston to Osternienburg | 5,300.31 mi (8,530.03 km) |
| Houston to Osterode | 5,238.23 mi (8,430.12 km) |
| Houston to Osterwieck | 5,246.92 mi (8,444.11 km) |
| Houston to Ostfildern | 5,304.84 mi (8,537.31 km) |
| Houston to Osthofen | 5,235.19 mi (8,425.22 km) |
| Houston to Ostrhauderfehn | 5,094.44 mi (8,198.71 km) |
| Houston to Ostringen | 5,266.82 mi (8,476.13 km) |
