| SeaTac to Sacile | 5,427.92 mi (8,735.39 km) |
| SeaTac to Sala Consilina | 5,840.61 mi (9,399.56 km) |
| SeaTac to Salemi | 5,928.29 mi (9,540.65 km) |
| SeaTac to Salerno | 5,803.12 mi (9,339.22 km) |
| SeaTac to Salo | 5,402.67 mi (8,694.76 km) |
| SeaTac to Salsomaggiore Terme | 5,435.68 mi (8,747.88 km) |
| SeaTac to Saluzzo | 5,382.03 mi (8,661.54 km) |
| SeaTac to Salzano | 5,444.93 mi (8,762.77 km) |
| SeaTac to Samarate | 5,358.17 mi (8,623.15 km) |
| SeaTac to San Benedetto del Tronto | 5,643.44 mi (9,082.24 km) |
| SeaTac to San Biagio di Callalta | 5,441.99 mi (8,758.03 km) |
| SeaTac to San Bonifacio | 5,432.89 mi (8,743.40 km) |
| SeaTac to San Casciano in Val di Pesa | 5,534.88 mi (8,907.52 km) |
| SeaTac to San Cataldo | 5,979.22 mi (9,622.63 km) |
| SeaTac to San Cesareo | 5,685.84 mi (9,150.48 km) |
