| Houston to Sesena | 5,010.46 mi (8,063.56 km) |
| Houston to Sestao | 4,951.87 mi (7,969.27 km) |
| Houston to Sevilla | 4,979.49 mi (8,013.71 km) |
| Houston to Sevilla La Nueva | 4,987.62 mi (8,026.79 km) |
| Houston to Silla | 5,190.17 mi (8,352.76 km) |
| Houston to Silleda | 4,724.22 mi (7,602.89 km) |
| Houston to Sitges | 5,235.61 mi (8,425.90 km) |
| Houston to Socuellamos | 5,077.63 mi (8,171.65 km) |
| Houston to Soller | 5,324.47 mi (8,568.90 km) |
| Houston to Solsona | 5,198.46 mi (8,366.11 km) |
| Houston to Son Servera | 5,360.13 mi (8,626.30 km) |
| Houston to Sonseca | 5,009.90 mi (8,062.66 km) |
| Houston to Sopelana | 4,951.10 mi (7,968.03 km) |
| Houston to Soria | 5,020.92 mi (8,080.39 km) |
| Houston to Suances | 4,900.44 mi (7,886.49 km) |
