| Luton to Sestu | 981.27 mi (1,579.20 km) |
| Luton to Settimo Torinese | 597.11 mi (960.95 km) |
| Luton to Seveso | 611.31 mi (983.80 km) |
| Luton to Sezze | 957.37 mi (1,540.74 km) |
| Luton to Siano | 1,047.14 mi (1,685.21 km) |
| Luton to Siena | 803.84 mi (1,293.66 km) |
| Luton to Signa | 771.59 mi (1,241.75 km) |
| Luton to Silea | 719.47 mi (1,157.87 km) |
| Luton to Silvi Paese | 935.17 mi (1,505.02 km) |
| Luton to Sinalunga | 821.99 mi (1,322.86 km) |
| Luton to Siniscola | 916.53 mi (1,475.02 km) |
| Luton to Sinnai | 983.55 mi (1,582.88 km) |
| Luton to Siracusa | 1,277.27 mi (2,055.56 km) |
| Luton to Solaro | 611.06 mi (983.40 km) |
| Luton to Soliera | 716.07 mi (1,152.40 km) |
