| SeaTac to Quarteira | 5,328.72 mi (8,575.75 km) |
| SeaTac to Queluz | 5,198.76 mi (8,366.60 km) |
| SeaTac to Reguengos de Monsaraz | 5,276.27 mi (8,491.34 km) |
| SeaTac to Resende | 5,118.37 mi (8,237.22 km) |
| SeaTac to Ribeira Brava | 5,226.02 mi (8,410.47 km) |
| SeaTac to Ribeira Grande | 4,638.59 mi (7,465.09 km) |
| SeaTac to Rio de Mouro | 5,195.54 mi (8,361.41 km) |
| SeaTac to Rio Maior | 5,179.47 mi (8,335.56 km) |
| SeaTac to Rio Tinto | 5,094.62 mi (8,199.01 km) |
| SeaTac to Sabugal | 5,188.01 mi (8,349.29 km) |
| SeaTac to Sacavem | 5,202.07 mi (8,371.92 km) |
| SeaTac to Salvaterra de Magos | 5,201.40 mi (8,370.85 km) |
| SeaTac to Santa Comba Dao | 5,150.72 mi (8,289.28 km) |
| SeaTac to Santa Cruz | 5,235.81 mi (8,426.21 km) |
| SeaTac to Santa Iria da Azoia | 5,199.91 mi (8,368.45 km) |
