| Petrel to Smolyan | 1,360.73 mi (2,189.88 km) |
| Petrel to Sofia | 1,294.27 mi (2,082.93 km) |
| Petrel to Sopot | 1,365.96 mi (2,198.30 km) |
| Petrel to Sozopol | 1,515.45 mi (2,438.88 km) |
| Petrel to Sredets | 1,489.87 mi (2,397.71 km) |
| Petrel to Stamboliyski | 1,353.10 mi (2,177.61 km) |
| Petrel to Stara Zagora | 1,410.96 mi (2,270.72 km) |
| Petrel to Svilengrad | 1,438.22 mi (2,314.59 km) |
| Petrel to Svishtov | 1,401.49 mi (2,255.48 km) |
| Petrel to Targovishte | 1,461.10 mi (2,351.41 km) |
| Petrel to Teteven | 1,342.83 mi (2,161.08 km) |
| Petrel to Troyan | 1,365.36 mi (2,197.34 km) |
| Petrel to Tryavna | 1,404.86 mi (2,260.90 km) |
| Petrel to Tutrakan | 1,467.28 mi (2,361.36 km) |
| Petrel to Varna | 1,528.00 mi (2,459.08 km) |
