| Houston to Arapgir | 6,831.99 mi (10,995.02 km) |
| Houston to Ardahan | 6,854.54 mi (11,031.31 km) |
| Houston to Ardesen | 6,796.83 mi (10,938.44 km) |
| Houston to Arhavi | 6,798.87 mi (10,941.72 km) |
| Houston to Aricak | 6,912.85 mi (11,125.16 km) |
| Houston to Armutlu | 6,409.47 mi (10,315.04 km) |
| Houston to Arnavutkoy | 6,374.18 mi (10,258.25 km) |
| Houston to Arpacay | 6,888.45 mi (11,085.89 km) |
| Houston to Arsin | 6,776.55 mi (10,905.81 km) |
| Houston to Arsuz | 6,878.08 mi (11,069.20 km) |
| Houston to Artvin | 6,823.29 mi (10,981.02 km) |
| Houston to Asagicinik | 6,641.12 mi (10,687.85 km) |
| Houston to Asarcik | 6,650.92 mi (10,703.63 km) |
| Houston to Askale | 6,857.26 mi (11,035.70 km) |
| Houston to Aslanapa | 6,511.79 mi (10,479.71 km) |
