| National City to Sesena | 5,853.86 mi (9,420.89 km) |
| National City to Sestao | 5,741.49 mi (9,240.04 km) |
| National City to Sevilla | 5,880.45 mi (9,463.67 km) |
| National City to Sevilla La Nueva | 5,829.71 mi (9,382.01 km) |
| National City to Silla | 6,020.46 mi (9,688.99 km) |
| National City to Silleda | 5,558.26 mi (8,945.16 km) |
| National City to Sitges | 6,021.27 mi (9,690.30 km) |
| National City to Socuellamos | 5,926.53 mi (9,537.84 km) |
| National City to Soller | 6,124.64 mi (9,856.66 km) |
| National City to Solsona | 5,974.94 mi (9,615.74 km) |
| National City to Son Servera | 6,157.11 mi (9,908.91 km) |
| National City to Sonseca | 5,861.07 mi (9,432.47 km) |
| National City to Sopelana | 5,739.43 mi (9,236.72 km) |
| National City to Soria | 5,830.53 mi (9,383.34 km) |
| National City to Suances | 5,695.37 mi (9,165.82 km) |
