| Luton to Sesimbra | 1,018.41 mi (1,638.98 km) |
| Luton to Setubal | 1,009.16 mi (1,624.08 km) |
| Luton to Sever do Vouga | 857.30 mi (1,379.68 km) |
| Luton to Silves | 1,087.70 mi (1,750.49 km) |
| Luton to Sines | 1,045.42 mi (1,682.44 km) |
| Luton to Sintra | 1,001.50 mi (1,611.76 km) |
| Luton to Sobrado de Paiva | 836.21 mi (1,345.75 km) |
| Luton to Sobral de Monte Agraco | 982.67 mi (1,581.45 km) |
| Luton to Soure | 906.22 mi (1,458.42 km) |
| Luton to Tabua | 874.25 mi (1,406.96 km) |
| Luton to Tavira | 1,079.15 mi (1,736.72 km) |
| Luton to Tomar | 930.64 mi (1,497.72 km) |
| Luton to Tondela | 865.31 mi (1,392.58 km) |
| Luton to Torre de Moncorvo | 803.10 mi (1,292.46 km) |
| Luton to Torres Novas | 941.49 mi (1,515.19 km) |
