| SeaTac to Santarem | 5,193.23 mi (8,357.69 km) |
| SeaTac to Santiago do Cacem | 5,257.39 mi (8,460.94 km) |
| SeaTac to Santo Andre | 5,253.88 mi (8,455.30 km) |
| SeaTac to Santo Tirso | 5,089.55 mi (8,190.83 km) |
| SeaTac to Sao Bras de Alportel | 5,332.04 mi (8,581.09 km) |
| SeaTac to Sao Felix da Marinha | 5,100.11 mi (8,207.84 km) |
| SeaTac to Sao Joao da Madeira | 5,111.85 mi (8,226.73 km) |
| SeaTac to Sao Joao de Ver | 5,106.76 mi (8,218.53 km) |
| SeaTac to Sao Mamede de Infesta | 5,092.12 mi (8,194.98 km) |
| SeaTac to Sao Pedro do Sul | 5,133.82 mi (8,262.09 km) |
| SeaTac to Satao | 5,145.87 mi (8,281.48 km) |
| SeaTac to Seia | 5,163.47 mi (8,309.80 km) |
| SeaTac to Senhora da Hora | 5,091.15 mi (8,193.41 km) |
| SeaTac to Serpa | 5,299.30 mi (8,528.40 km) |
| SeaTac to Serta | 5,183.16 mi (8,341.48 km) |
