| Bon Air to Smolyan | 5,102.69 mi (8,211.98 km) |
| Bon Air to Sofia | 5,000.67 mi (8,047.80 km) |
| Bon Air to Sopot | 5,061.34 mi (8,145.44 km) |
| Bon Air to Sozopol | 5,191.23 mi (8,354.47 km) |
| Bon Air to Sredets | 5,173.80 mi (8,326.42 km) |
| Bon Air to Stamboliyski | 5,073.37 mi (8,164.80 km) |
| Bon Air to Stara Zagora | 5,107.14 mi (8,219.15 km) |
| Bon Air to Svilengrad | 5,157.29 mi (8,299.85 km) |
| Bon Air to Svishtov | 5,046.52 mi (8,121.58 km) |
| Bon Air to Targovishte | 5,111.34 mi (8,225.91 km) |
| Bon Air to Teteven | 5,030.68 mi (8,096.10 km) |
| Bon Air to Troyan | 5,050.51 mi (8,128.01 km) |
| Bon Air to Tryavna | 5,083.21 mi (8,180.64 km) |
| Bon Air to Tutrakan | 5,079.59 mi (8,174.81 km) |
| Bon Air to Varna | 5,166.17 mi (8,314.15 km) |
