| SeaTac to Solofra | 5,795.96 mi (9,327.69 km) |
| SeaTac to Somma Lombardo | 5,352.15 mi (8,613.45 km) |
| SeaTac to Somma Vesuviana | 5,783.53 mi (9,307.69 km) |
| SeaTac to Sommacampagna | 5,422.35 mi (8,726.42 km) |
| SeaTac to Sona | 5,419.95 mi (8,722.57 km) |
| SeaTac to Sondrio | 5,352.55 mi (8,614.09 km) |
| SeaTac to Sora | 5,712.03 mi (9,192.63 km) |
| SeaTac to Sorbolo | 5,445.49 mi (8,763.67 km) |
| SeaTac to Soresina | 5,404.61 mi (8,697.88 km) |
| SeaTac to Sorisole | 5,372.88 mi (8,646.82 km) |
| SeaTac to Sorrento | 5,796.94 mi (9,329.27 km) |
| SeaTac to Sorso | 5,637.30 mi (9,072.36 km) |
| SeaTac to Sortino | 6,025.35 mi (9,696.87 km) |
| SeaTac to Soverato Marina | 5,969.30 mi (9,606.67 km) |
| SeaTac to Sovicille | 5,558.45 mi (8,945.46 km) |
