| Luton to Sangeorgiu de Mures | 1,175.03 mi (1,891.02 km) |
| Luton to Sangeorz-Bai | 1,159.10 mi (1,865.39 km) |
| Luton to Sannicolau Mare | 1,030.18 mi (1,657.91 km) |
| Luton to Santana | 1,057.12 mi (1,701.27 km) |
| Luton to Satu Mare | 1,071.14 mi (1,723.84 km) |
| Luton to Scobinti | 1,254.52 mi (2,018.96 km) |
| Luton to Scornicesti | 1,247.14 mi (2,007.08 km) |
| Luton to Sebes | 1,156.71 mi (1,861.55 km) |
| Luton to Seini | 1,089.10 mi (1,752.74 km) |
| Luton to Sfantu-Gheorghe | 1,253.08 mi (2,016.64 km) |
| Luton to Sibiu | 1,186.76 mi (1,909.91 km) |
| Luton to Sighetu Marmatiei | 1,109.88 mi (1,786.18 km) |
| Luton to Sighisoara | 1,199.44 mi (1,930.31 km) |
| Luton to Simeria | 1,137.09 mi (1,829.97 km) |
| Luton to Sinaia | 1,260.68 mi (2,028.87 km) |
