| Ontario to Sesena | 5,807.09 mi (9,345.61 km) |
| Ontario to Sestao | 5,690.47 mi (9,157.93 km) |
| Ontario to Sevilla | 5,838.90 mi (9,396.80 km) |
| Ontario to Sevilla La Nueva | 5,782.89 mi (9,306.67 km) |
| Ontario to Silla | 5,972.02 mi (9,611.04 km) |
| Ontario to Silleda | 5,511.59 mi (8,870.05 km) |
| Ontario to Sitges | 5,969.06 mi (9,606.28 km) |
| Ontario to Socuellamos | 5,880.03 mi (9,462.99 km) |
| Ontario to Soller | 6,073.32 mi (9,774.07 km) |
| Ontario to Solsona | 5,922.13 mi (9,530.74 km) |
| Ontario to Son Servera | 6,105.42 mi (9,825.72 km) |
| Ontario to Sonseca | 5,814.96 mi (9,358.27 km) |
| Ontario to Sopelana | 5,688.31 mi (9,154.45 km) |
| Ontario to Soria | 5,780.91 mi (9,303.47 km) |
| Ontario to Suances | 5,644.94 mi (9,084.65 km) |
