| Flensburg to Sonsbeck | 253.13 mi (407.38 km) |
| Flensburg to Sonthofen | 503.36 mi (810.08 km) |
| Flensburg to Spaichingen | 464.32 mi (747.25 km) |
| Flensburg to Spelle | 185.40 mi (298.37 km) |
| Flensburg to Spenge | 187.15 mi (301.19 km) |
| Flensburg to Speyer | 379.82 mi (611.26 km) |
| Flensburg to Spiesen-Elversberg | 390.03 mi (627.70 km) |
| Flensburg to Spremberg | 301.67 mi (485.49 km) |
| Flensburg to Springe | 177.30 mi (285.34 km) |
| Flensburg to Sprockhovel | 252.79 mi (406.83 km) |
| Flensburg to Stade | 81.62 mi (131.36 km) |
| Flensburg to Stadtallendorf | 273.38 mi (439.97 km) |
| Flensburg to Stadthagen | 170.04 mi (273.65 km) |
| Flensburg to Stadtlohn | 218.92 mi (352.32 km) |
| Flensburg to Stahnsdorf | 226.43 mi (364.40 km) |
